K232136 · Siemens Medical Solutions USA, Inc. · JAK · Jan 4, 2024 · Radiology
Device Facts
Record ID
K232136
Device Name
syngo.CT Applications
Applicant
Siemens Medical Solutions USA, Inc.
Product Code
JAK · Radiology
Decision Date
Jan 4, 2024
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 892.1750
Device Class
Class 2
Attributes
Software as a Medical Device
Indications for Use
syngo.CT Applications is a set of software applications for advanced visualization, measurement, and evaluation for specific body regions. This software package is designed to support the radiologists and physicians from emergency medicine, specialty care, urgent care, and general practice e.g. in the: - Evaluation of perfusion of organs and tumors and myocardial tissue perfusion - Evaluation of bone structures and detection of bone lesions - Evaluation of CT images of the heart - Evaluation of the coronary lesions - Evaluation of the mandible and maxilla - Evaluation of dynamic vessels and extended phase handling - Evaluation of the liver and its intrahepatic vessel structures to identify the vascular territories of sub-vessel systems in the liver - Evaluation of neurovascular structures - Evaluation of the lung parenchyma - Evaluation of non-enhanced Head CT images - Evaluation of vascular lesions
Device Story
syngo.CT Applications is a software suite for post-processing and evaluating CT images. It bundles 14 distinct clinical applications (e.g., Body Perfusion, Cardiac Function, CaScoring, Neuro DSA, Pulmo 3D) into a single package. Input consists of CT or MR image data; software provides visualization (2D/3D/4D, MPR, MIP, VRT), measurement (HU, geometric, volumetric), and analysis tools (vessel centerline, stenosis, perfusion parameters). Used in clinical settings by radiologists and physicians to support diagnosis, lesion characterization, and therapy monitoring. Output includes processed images, quantitative metrics, and reports. The device facilitates clinical decision-making by providing structured evaluation of anatomical and functional data. Version SOMARIS/8 VB80 adds syngo.CT CaScoring and integrates lung lobe segmentation and an interface to syngo.CT Lung CAD.
Clinical Evidence
Bench testing only. Software verification and validation were performed to confirm that all software specifications met acceptance criteria. Risk analysis was conducted to mitigate identified hazards. No clinical data was required or provided.
Technological Characteristics
Software-based post-processing suite for CT images. Operates on SOMARIS/8 VB80 platform. Connectivity via DICOM standards. Complies with IEC 62304 (software lifecycle), ISO 14971 (risk management), and IEC 62366-1 (usability). Software level of concern is Moderate.
Indications for Use
Indicated for radiologists and physicians (emergency, specialty, urgent, general practice) for advanced visualization, measurement, and evaluation of CT images for organs, tumors, bone, heart, coronary arteries, mandible/maxilla, vessels, liver, neurovascular structures, lung parenchyma, and head CT.
Regulatory Classification
Identification
A computed tomography x-ray system is a diagnostic x-ray system intended to produce cross-sectional images of the body by computer reconstruction of x-ray transmission data from the same axial plane taken at different angles. This generic type of device may include signal analysis and display equipment, patient and equipment supports, component parts, and accessories.
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January 4, 2024
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Siemens Medical Solutions USA, Inc. Clayton Ginn Regulatory Affairs Professional 810 Innovation Drive KNOXVILLE, TN 37932
Re: K232136
Trade/Device Name: syngo.CT Applications Regulation Number: 21 CFR 892.1750 Regulation Name: Computed Tomography X-Ray System Regulatory Class: Class II Product Code: JAK Dated: December 13, 2023 Received: December 13, 2023
Dear Clayton Ginn:
We have reviewed your section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (the Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database available at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Additional information about changes that may require a new premarket notification are provided in the FDA guidance documents entitled "Deciding When to Submit a 510(k) for a Change to an Existing Device" (https://www.fda.gov/media/99812/download) and "Deciding When to Submit a 510(k) for a Software Change to an Existing Device" (https://www.fda.gov/media/99785/download).
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Your device is also subject to, among other requirements, the Quality System (QS) regulation (21 CFR Part 820), which includes, but is not limited to, 21 CFR 820.30, Design controls; 21 CFR 820.90, Nonconforming product; and 21 CFR 820.100, Corrective and preventive action. Please note that regardless of whether a change requires premarket review, the QS regulation requires device manufacturers to review and approve changes to device design and production (21 CFR 820.30 and 21 CFR 820.70) and document changes and approvals in the device master record (21 CFR 820.181).
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting of medical device-related adverse events) (21 CFR Part 803) for devices or postmarketing safety reporting (21 CFR Part 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR Part 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR Parts 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
For comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
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Digitally signed by Gabriela M. Rodal -S for
Lu Jiang, Ph.D. Assistant Director DHT8B: Division of Radiologic Imaging Devices and Electronic Products OHT8: Office of Radiological Health Office of Product Evaluation and Quality Center for Devices and Radiological Health
Enclosure
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# Indications for Use
510(k) Number (if known) K232136
Device Name syngo.CT Applications
Indications for Use (Describe)
syngo.CT Applications is a set of software applications for advanced visualization, measurement, and evaluation for specific body regions.
This software package is designed to support the radiologists and physicians from emergency medicine, specialty care, urgent care, and general practice e.g. in the:
- · Evaluation of perfusion of organs and tumors and myocardial tissue perfusion
- · Evaluation of bone structures and detection of bone lesions
- · Evaluation of CT images of the heart
- · Evaluation of the coronary lesions
- · Evaluation of the mandible and maxilla
- · Evaluation of dynamic vessels and extended phase handling
· Evaluation of the liver and its intrahepatic vessel structures to identify the vascular territories of sub-vessel systems in the liver
- Evaluation of neurovascular structures
- · Evaluation of the lung parenchyma
- · Evaluation of non-enhanced Head CT images
- · Evaluation of vascular lesions
| Type of Use (Select one or both, as applicable) |
|-------------------------------------------------|
|-------------------------------------------------|
| <div> <span> <span style="font-size:16px">☒</span> Prescription Use (Part 21 CFR 801 Subpart D) </span> </div> |
|--------------------------------------------------------------------------------------------------------------------|
| <div> <span> <span style="font-size:16px">☐</span> Over-The-Counter Use (21 CFR 801 Subpart C) </span> </div> |
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# 510(k) Summary – K232136
# 1. Identification of the Submitter
| Submitter / Primary Contact Person | Clayton Ginn |
|------------------------------------|-----------------------------------------------|
| | Regulatory Affairs |
| | clayton.ginn@siemens-healthineers.com |
| | +1 (865) 898-2692 |
| Secondary Contact Person | Monsuru (Kenny) Bello |
| | Regulatory Affairs |
| | monsuru.bello@siemens-healthineers.com |
| | +1 (240) 601-3848 |
| Submitter Address | Siemens Medical Solutions, Inc. USA |
| | Molecular Imaging |
| | 810 Innovation Drive |
| | Knoxville, TN 37932 |
| | Establishment Registration Number: 1034973 |
| Manufacturing Site | Siemens Healthcare GmbH |
| | Siemensstr 1 -or- Rittigfeld |
| | Forchheim, Bavaria, DE 91301 |
| | Establishment Registration Number: 3004977335 |
| Importer/Distributor | Siemens Medical Solutions USA, Inc. |
| | 40 Liberty Boulevard |
| | Malvern, PA 19355 |
| | Establishment Registration Number: 2240869 |
# 2. Device Name and Classification
| Product Name: | syngo.CT Applications |
|-----------------------|-------------------------------------|
| Propriety Trade Name: | syngo.CT Applications |
| Regulation Name: | Computed tomography x-ray system |
| Classification Name: | System, X-ray, Tomography, Computed |
| Classification Panel: | Radiology |
| CFR Section: | 21 CFR §892.1750 |
| Device Class: | Class II |
| Product Code: | JAK |
# 3. Predicate Devices
#### Primary Predicate Device:
| Trade Name: | syngo.CT Applications |
|-----------------------|-------------------------------------|
| 510(k) Number: | K220450 |
| Clearance Date: | 03/07/2022 |
| Regulation Name: | Computed tomography x-ray system |
| Classification Name: | System, X-ray, Tomography, Computed |
| Classification Panel: | Radiology |
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CFR Section: 21 CFR §892.1750 Device Class: Class II Product Code: JAK
#### Reference Devices
| Trade Name: | syngo.CT CaScoring |
|-----------------------|-------------------------------------|
| 510(k) Number: | K221219 |
| Clearance Date: | 05/17/2022 |
| Regulation Name: | Computed tomography x-ray system |
| Classification Name: | System, X-ray, Tomography, Computed |
| Classification Panel: | Radiology |
| CFR Section: | 21 CFR §892.1750 |
| Device Class: | Class II |
| Product Code: | JAK |
| Trade Name: | syngo.CT Extended Functionality |
| 510(k) Number: | K203699 |
| Clearance Date: | 04/30/2021 |
| Regulation Name: | Computed tomography x-ray system |
| Classification Name: | System, X-ray, Tomography, Computed |
| Classification Panel: | Radiology |
| CFR Section: | 21 CFR §892.1750 |
| Device Class: | Class II |
JAK
#### 4. Device Description
Product Code:
The syngo.CT Applications are syngo based post-processing software applications to be used for viewing and evaluating CT images provided by a CT diagnostic device and enabling structured evaluation of CT images.
The syngo.CT Applications is a combination of fourteen (14) medical devices which are handled as features / functionalities within syngo.CT Applications.
The table below shows the functionalities of syngo.CT Applications:
| Single<br>Application | Functionality and description |
|----------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| syngo.CT Body<br>Perfusion | • Evaluation of perfusion of organs and tumors.<br>• Calculation blood flow, blood volume and permeability from sets of images<br>reconstructed from dynamic CT data acquired after the injection of contrast media<br>• Separate calculation of arterial and portal venous component of hepatic perfusion<br>• Evaluation of regions of interest and visual inspection of time density curves<br>• Deconvolution methods |
| Single<br>Application | Functionality and description |
| syngo.CT Bone<br>Reading | • visualizations of spine and rib structures<br>• multiplanar reconstruction (MPR) thin/thick, maximum intensity projection (MIP)<br>thin/thick, inverted MIP thin/thick, volume rendering technique (VRT)<br>• geometric measurement tools (distance line, polyline, marker, arrow, angle)<br>• HU measurement tools (Pixel lens, ROI circle, ROI polygonal, ROI freehand, VOI<br>sphere)<br>• curved MPR visualization (unfolded ribs and spine views), crosssection MPRs<br>• tools for creation and editing of anatomical centerline paths<br>• tools for creation and editing of anatomical labels |
| syngo.CT<br>Cardiac<br>Function | • Evaluation of CT images of the heart.<br>• Digital image processing and visualization tools (2D, 3D and 4D display of dynamic data),<br>• Evaluation tools (structural and functional analysis of heart chambers and valves, and analysis of myocardial tissue)<br>• Reporting tools |
| syngo.CT<br>CaScoring | • Loading of a series of appropriate CT- or MR-Images from the patient database<br>• Browsing, selecting, and displaying images for searching calcium regions/lesions<br>• Interactive definition of ROIs and assignment of the four major coronary arteries (LM, LAD, CX and RCA) to the lesions<br>• Calculation and display of the 2D-Agatston score/factor or other metric on the defined ROIs<br>• Interactive definition of ROIs (for example noise) to disqualify the region from participation in the score<br>• Displaying the score in form of result tables/reports on paper and/or film<br>• Pan and Zoom functionality/windowing<br>• Reformatting<br>• Comparison of score to cited literature |
| syngo.CT<br>Coronary<br>Analysis | • Evaluating of cardiac CT angiography (CTA) volume data sets<br>• Combination of digital image processing and visualization tools (multiplanar reconstruction (MPR) thin/thick, maximum intensity projection (MIP) thin/thick, inverted MIP thin/thick, volume rendering technique (VRT), curved planar reformation (CPR))<br>• Evaluation tools (coronary vessel centerline calculation, stenosis calculation and plaque analysis) and reporting tools (lesion location, lesion characteristics and key images),<br>• Designed to support the physician in confirming the presence or absence of physician-identified coronary lesions and evaluation, documentation and follow-up of any such lesion These visualization/evaluation tools allow for characterization (geometry (length, lumen diameter, cross section area, stenos is grade) and appearance (HU values)) of coronary lesions and lesion size over time, helping the physician to assess the changes in their growth. It is also designed to help the physician classify conspicuous regions of tissue |
| Single<br>Application | Functionality and description |
| syngo.CT<br>Dental | • Basic reading tools (multiplanar reconstruction (MPR), maximum intensity projection<br>(MIP), volume rendering technique (VRT), minimal intensity projection (MinIP)<br>• Basic geometric measurement tools (distance line, polyline, marker, arrow, angle)<br>• Basic HU measurement tools (Pixel lens, ROI Circle, ROI polygonal, ROI freehand, VOI<br>sphere, VOI freehand)<br>• Dedicated dental visualization tools (Dental panoramic views (curved MPRs) and<br>dental paraxial views (cross-section MPRs) that are calculated based on a manually<br>defined centerline)<br>• Tool to manually outline the mandibular canal<br>• Tool that allows paraxial and panoramic result images to be saved as dental range<br>series.<br>• True Size (1:1) printing of panoramic and paraxial images to allow anatomy to be<br>printed in its actual size on the film sheet. |
| syngo.CT<br>Dynamic<br>Angio | • Visualization of flow of contrast from the arteries to the veins with contrast enhanced<br>CT images<br>• Supports in the evaluation of regions of interest, the visual inspection of time<br>attenuation curves, and the creation of specific CT volumes, for example, arterial or<br>venous phase. |
| syngo.CT Liver<br>Analysis | • Evaluation of the liver volume and examination of the vessels of the liver<br>• Computation and manual correction of liver volumes<br>• Computation and manual correction of tumor volumes and extent<br>• Computation and manual correction of liver vessel tree structure<br>• Computation of territories based on vessel branches<br>• Tumor position in relation to vessels (i.e., 3D visualization of liver, tumor, and vessels)<br>• Manual definition of separation plane proposals<br>• Computation of volume of liver parts<br>• Combination of information from different CT and MR phase volumes |
| syngo.CT<br>Myocard<br>Perfusion | • Evaluation of the perfusion of the myocardium<br>• Calculation of blood flow, blood volume, and other hemodynamic parameters from<br>sets of images reconstructed from dynamic CT data acquired after the injection of<br>contrast media<br>• Evaluation of regions of interest and the visual inspection of time attenuation curves |
| syngo.CT<br>Neuro DSA | • Removing of bone structures from CT Angiography (CTA) data sets of the cerebral<br>vasculature<br>• Bone removal is based on a bone mask created from an additional non enhanced CT<br>(NECT) scan that was three-dimensionally registered to the CTA data set |
| Single<br>Application | Functionality and description |
| syngo.CT<br>Neuro<br>Perfusion | • The syngo.CT Neuro Perfusion software package is designed to evaluate areas of<br>brain perfusion. The software processes images or volumes that were reconstructed<br>from continuously acquired CT data after the injection of contrast media.<br>• Generation of the following result volumes: Cerebral blood flow (CBF), Cerebral blood<br>volume (CBV), Local bolus timing (time to start (TTS), time to peak (TTP), time to drain<br>(TTD)), Mean transit time (MTT), Transit time to the center of the IRF (TMax), Flow<br>extraction product (permeability), Temporal MIP, Temporal Average, Baseline<br>Volume , Modified dynamic input data<br>• The software allows the calculation of mirrored regions of interest and the visual<br>inspection of time attenuation curves.<br>• One clinical application is to visualize the apparent blood perfusion and to calculate<br>Hypoperfused Area and Mismatch Ratio in the brain tissue affected by acute stroke.<br>• Areas of decreased perfusion appear as areas of changed signal intensity: Lower<br>signal, intensity for CBF and CBV, Higher signal intensity for TTP, TTD, MTT, and TMax<br>• A second application is to visualize blood brain barrier disturbances by modeling<br>extra-vascular leakage of blood into the interstitial space. This additional capability<br>may improve the differential diagnosis of brain tumors and may be helpful in therapy<br>monitoring. |
| syngo.CT<br>Pulmo 3D | • syngo.CT Pulmo 3D analyses the lung, either completely or in parts, identifying areas<br>with lower or higher Hounsfield values in comparison to a predefined threshold.<br>These areas are evaluated using statistical methods such as histograms and<br>percentiles.<br>• Examination of the lung parenchyma and the airways of the lung<br>• Evaluation Tools (computation of lung volumes, display of statistics related to the<br>lung, setting of markers, airway measurements) |
| syngo.CT Skull<br>Unfolding | • This software provides advanced visualization of the skull and brain surface for easy<br>manual identification, marking and reporting of pathologies such as skull fractures<br>and hematomas. |
| syngo.CT<br>Vascular<br>Analysis | • syngo.CT Vascular Analysis is an image analysis software package for evaluating<br>enhanced CT images.<br>• Visualization tools (multiplanar reconstruction (MPR) thin/thick, maximum intensity<br>projection (MIP) thin/thick, inverted MIP thin/thick, volume rendering technique<br>(VRT), curved planar reformation (CPR), processing tools (bone removal (based both<br>on single energy and Dual Energy), table removal)<br>• Evaluation tools (vessel centerline calculation, lumen calculation, stenosis calculation)<br>• Reporting tools (lesion location, lesion characteristics and key images),<br>• the software package is designed to support the physician in confirming the presence<br>or absence of physician-identified lesions in blood vessels and evaluation,<br>documentation and follow-up of any such lesion. These<br>visualization/processing/evaluation tools allow for characterization (geometry<br>(length, lumen diameter, cross section area, stenosis grade) and appearance (HU<br>values)) of vascular lesions and lesion size over time, helping the physician to assess<br>the changes in their growth. It is also designed to help the physician classify<br>conspicuous regions of tissue. |
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This subject device which is versioned as SOMARIS/8 VB80 includes the f
- syngo.CT CaScoring Added to the subject device as a fourteenth application and extended the . export function to include a DICOM Structured Report.
- . syngo.CT Pulmo 3D – Added an interface to syngo.CT Lung CAD (latest clearance: K203258, K231157), and integrated the lung lobe segmentation algorithm from syngo.CT Extended Functionality (K203699).
#### 5. Indications for Use
syngo.CT Applications is a set of software applications for advanced visualization, measurement, and evaluation for specific body regions.
This software package is designed to support the radiologists and physicians from emergency medicine, specialty care, urgent care, and general practice e.g. in the:
- Evaluation of perfusion of organs and tumors and myocardial tissue perfusion
- . Evaluation of bone structures and detection of bone lesions
- Evaluation of CT images of the heart
- Evaluation of the coronary lesions
- Evaluation of the mandible and maxilla
- Evaluation of dynamic vessels and extended phase handling
- . Evaluation of the liver and its intrahepatic vessel structures to identify the vascular territories of sub-vessel systems in the liver
- Evaluation of neurovascular structures
- . Evaluation of the lung parenchyma
- Evaluation of non-enhanced Head CT images
- Evaluation of vascular lesions
#### 6. Indications for Use Comparison to the Predicate Device
There is no change to the indications for use. Each bulleted function in the indications for use relates to one of the now bundled applications. The new application syngo.CT CaScoring falls under the phrase 'Evaluation of coronary lesions'.
| Function | Related Application |
|-------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------|
| Evaluation of perfusion of organs and tumors and myocardial<br>tissue perfusion | syngo.CT Body Perfusion<br>syngo.CT Myocardial Perfusion |
| Evaluation of bone structures and detection of bone lesions | syngo.CT Bone Reading<br>syngo.CT Skull Unfolding |
| Evaluation of CT images of the heart | syngo.CT Cardiac Function |
| Evaluation of the coronary lesions | syngo.CT Coronary Analysis<br>syngo.CT CaScoring |
| Evaluation of the mandible and maxilla | syngo.CT Dental |
| Evaluation of dynamic vessels and extended phase handling | syngo.CT Dynamic Angio |
| Evaluation of the liver and its intrahepatic vessel structures to<br>identify the vascular territories of sub-vessel systems in the liver | syngo.CT Liver Analysis |
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| Evaluation of neurovascular structures | syngo.CT Neuro Perfusion |
|-------------------------------------------|----------------------------|
| Evaluation of the lung parenchyma | syngo.CT Pulmo 3D |
| Evaluation of non-enhanced Head CT images | syngo.CT Neuro DSA |
| Evaluation of vascular lesions | syngo.CT Vascular Analysis |
# 7. Comparison of Technological Characteristics with the Predicate Device
The subject device is a combination of the fourteen (14) medical devices. The main functionalities of the predicate device is unchanged for syngo.CT Applications SOMARIS/VB70 except the minor changes within syngo.CT Pulmo 3D. For this subject device, the legally marketed syngo.CT CaScoring application was bundled to the subject device and the export function was extended.
| Subject Device<br>syngo.CT Applications<br>(SOMARIS/8 VB80) | Predicate Device<br>syngo.CT Applications<br>(SOMARIS/8 VB70) | Comparison Result |
|---------------------------------------------------------------------|---------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Built-in applications in the subject device "syngo.CT Applications" | | |
| syngo.CT Body Perfusion | syngo.CT Body Perfusion | Same |
| syngo.CT Bone Reading | syngo.CT Bone Reading | Same |
| syngo.CT Cardiac Function | syngo.CT Cardiac Function | Same |
| syngo.CT Coronary Analysis | syngo.CT Coronary Analysis | Same |
| syngo.CT Dynamic Angio | syngo.CT Dynamic Angio | Same |
| syngo.CT Dental | syngo.CT Dental | Same |
| syngo.CT Liver Analysis | syngo.CT Liver Analysis | Same |
| syngo.CT Myocardial Perfusion | syngo.CT Myocardial Perfusion | Same |
| syngo.CT Neuro DSA | syngo.CT Neuro DSA | Same |
| syngo.CT Neuro Perfusion | syngo.CT Neuro Perfusion | Same |
| syngo.CT Pulmo 3D | syngo.CT Pulmo 3D | Extended<br>Implementation of a software interface<br>which provided a connection to the<br>external medical device syngo.CT Lung<br>CAD with separate clearance.<br>Additionally, integration of the lung lobe<br>segmentation feature which remains<br>unchanged as compared to the reference<br>device syngo.CT Extended Functionality<br>(K203699). |
| syngo.CT Skull Unfolding | syngo.CT Skull Unfolding | Same |
| syngo.CT Vascular Analysis | syngo.CT Vascular Analysis | Same |
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| Subject Device<br>syngo.CT Applications<br>(SOMARIS/8 VB80) | Predicate Device<br>syngo.CT Applications<br>(SOMARIS/8 VB70) | Comparison Result |
|-------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| syngo.CT CaScoring | Not available in the predicate device<br>but former separately cleared as<br>syngo.CT CaScoring (K221219,<br>clearance date 05/17/2022) | Extended<br>This medical device has been included to<br>the software package syngo.CT<br>Applications with no significant changes<br>respectively changes to the clinical<br>functionality of syngo.CT CaScoring. This<br>application has been formerly cleared<br>with K221219. Furthermore, the export<br>function has been extended. |
#### 8. Performance Data
The following performance data were provided in support of the substantial equivalence determination.
#### Software Verification and Validation
Software Documentation for a Moderate Level of Concern software per FDA's Guidance Document "Guidance for the Content of Premarket Submissions for Software Contained in Medical Devices" issued on May 11, 2005 is also included as part of this submission. The performance data demonstrates continued conformance with special controls for medical devices containing software. The Risk Analysis was completed, and risk control implemented to mitigate identified hazards. The testing supports that all software specifications have met the acceptance criteria. Testing for verification and validation support the claim of substantial equivalence.
#### Risk Analysis
The risk analysis was completed, and risk control implemented to mitigate identified hazards. The testing results support that all the software specifications have met the acceptance criteria. Testing for verification and validation of the device was found acceptable to support the claims of substantial equivalence.
Siemens hereby certifies that synqo.CT Applications meets the following FDA Recognized Consensus standards listed below:
| Recognition<br>Number | Product<br>Area | Title of Standard | Date of<br>Recognition | Standards<br>Development<br>Organization |
|-----------------------|--------------------------|-----------------------------------------------------------------------------------------------------|------------------------|------------------------------------------|
| 12-349 | Radiology | Digital Imaging and Communications in Medicine<br>(DICOM) Set; PS 3.1 - 3.20 2022d | 12/19/2022 | NEMA |
| 13-79 | Software | Medical Device Software – Software Life Cycle<br>Processes; 62304:2006 (1st Edition)/A1:2016 | 01/14/2019 | AAMI, ANSI,<br>IEC |
| 5-125 | Software/<br>Informatics | Medical devices – Application of risk management to<br>medical devices; 14971 Third Edition 2019-12 | 12/23/2019 | ISO |
{11}------------------------------------------------
Image /page/11/Picture/0 description: The image contains the logo for Siemens Healthineers. The word "SIEMENS" is written in teal, and the word "Healthineers" is written in orange. To the right of the word "Healthineers" is a graphic of orange dots.
| 5-129 | General I<br>(QS/RM) | Medical devices - Part 1: Application of usability<br>engineering to medical devices<br>62366-1:2015+AMD1:2020 | 07/06/2020 | AAMI, ANSI,<br>IEC |
|-------|----------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------|--------------------|
| 5-134 | General<br>(QS/RM) | Medical devices - Symbols to be used with medical<br>device labels, labelling, and information to be<br>supplied - Part 1: General requirements<br>ISO 15223-1 Fourth edition 2021-07 | 12/20/2021 | ISO |
# 9. Conclusion
The fundamental scientific technology and technological characteristics are the same as the predicate device and reference device. The built-in applications in the subject device remain unchanged as the built-in ones in the predicate device except the application syngo.CT Pulmo 3D which includes the changes as shown in the comparison table. The additional bundling of syngo.CT CaScoring to the subject device and the minor improvements and enhancements do not raise questions of safety and efficacy since the changes do not introduce any new clinical algorithms/features and they do not change the performance of subject device significantly.
The result of all testing conducted was found acceptable to support the claim of substantial equivalence. The comparison of technological characteristics and software validation demonstrates that the subject device is as safe and effective when compared to the predicate device that is currently marketed for the same intended use.
For the subject device, syngo.CT Applications, Siemens used the same testing with the same workflows as used to clear the predicate devices. Siemens considers synqo.CT Applications to be as safe, as effective and with performance substantially equivalent to the commercially available predicate device.
Therefore, Siemens believes that the subject device, the syngo.CT Applications does not raise new questions of safety and effectiveness and is substantially equivalent to the predicate device.
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Learn the FDA Browser
Two short videos show you everything — or skip straight to the written tutorial if you'd rather read. You can reopen this any time from the Tutorial button in the top bar.
Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
Where do you find a device's intended use without opening the PDF?
Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
6. Collections
With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
8. Chart view
Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.