K233512 · Ischemaview, Inc. · QIH · Jan 16, 2024 · Radiology
Device Facts
Record ID
K233512
Device Name
Rapid (6.0)
Applicant
Ischemaview, Inc.
Product Code
QIH · Radiology
Decision Date
Jan 16, 2024
Decision
SESE
Submission Type
Special
Regulation
21 CFR 892.2050
Device Class
Class 2
Attributes
AI/ML, Software as a Medical Device
Indications for Use
Rapid is an image processing software package to be used by trained professionals, including but not limited to physicians and medical technicians. The software runs on a standard off-the-shelf computer or a virtual platform, such as VMware, and can be used to perform image viewing, processing and analysis of images. Data and images are acquired through DICOM compliant imaging devices. Rapid provides both viewing and analysis capabilities for functional and dynamic imaging datasets acquired with CT Perfusion (CTP), CT Angiography (CTA), and MRI including a Diffusion Weighted MRI (DWI) Module and a Dynamic Analysis Module (dynamic contrast-enhanced imaging data for MRI and CT). The CT analysis includes NCCT maps showing areas of hypodense and hyperdense tissue. The DWI Module is used to visualize local water diffusion properties from the analysis of diffusion weighted MRI data. The Dynamic Analysis Module is used for visualization and analysis of dynamic imaging data, showing properties of changes in contrast over time. This functionality includes calculation of parameters related to tissue flow (perfusion) and tissue blood volume. Rapid CT-Perfusion and Rapid MR-Perfusion can be used by physicians to aid in the selection of acute stroke patients (with known occlusion of the intracranial internal carotid artery or proximal middle cerebral artery) Instructions for the use of contrast agents for this indication can be found in Appendix A of the User's Manual. Additional information for safe and effective drug use is available in the product-specific iodinated CT and gadolinium-based MR contrast drug labeling. In addition to the Rapid imaging criteria, patients must meet the clinical requirements for thrombectomy, as assessed by the physician, and have none of the following contraindications or exclusions: - Bolus Quality: absent or inadequate bolus. - Patient Motion: excessive motion leading to artifacts that make the scan technically inadequate - Presence of hemorrhage
Device Story
Rapid is a DICOM-compliant image processing software (SaMD) for viewing, quantifying, and analyzing CT and MRI datasets. It operates on standard off-the-shelf hardware or virtual platforms (e.g., VMware) in on-premises or hybrid (cloud-connected) configurations. The system automatically identifies incoming DICOM data, selects the appropriate processing module, and performs tasks like perfusion analysis, volumetry, and time-intensity plotting. It assists physicians in identifying acute stroke patients eligible for thrombectomy by visualizing tissue perfusion, diffusion, and density changes. The software streamlines time-consuming image processing tasks, reducing clinician fatigue. Results are accessed via a web browser or integrated into existing PACS workflows. The device is intended for use by trained medical professionals in clinical settings.
Clinical Evidence
Bench testing only. Performance validation testing using phantom and clinical case data demonstrated accurate representation of key processing parameters under clinically relevant conditions. Software verification and validation confirmed compliance with design requirements and specifications.
Technological Characteristics
DICOM-compliant PACS software; runs on standard off-the-shelf Linux-based servers or virtual platforms (VMware). Connectivity via hospital LAN, VPN (RFC2401/4301), or SSH. Data stored on encrypted hard drives. Web-based interface (HTTP/HTML/PHP). Complies with NEMA PS 3.1-3.20, IEC 62304, IEC 62366, and EN ISO 14971.
Indications for Use
Indicated for trained professionals (physicians, technicians) to perform image viewing, processing, and analysis of CT/MRI data to aid in selecting acute stroke patients (with known intracranial internal carotid or proximal middle cerebral artery occlusion) for thrombectomy. Contraindications: inadequate bolus quality, excessive patient motion, or presence of hemorrhage.
Regulatory Classification
Identification
A medical image management and processing system is a device that provides one or more capabilities relating to the review and digital processing of medical images for the purposes of interpretation by a trained practitioner of disease detection, diagnosis, or patient management. The software components may provide advanced or complex image processing functions for image manipulation, enhancement, or quantification that are intended for use in the interpretation and analysis of medical images. Advanced image manipulation functions may include image segmentation, multimodality image registration, or 3D visualization. Complex quantitative functions may include semi-automated measurements or time-series measurements.
Special Controls
*Classification.* Class II (special controls; voluntary standards—Digital Imaging and Communications in Medicine (DICOM) Std., Joint Photographic Experts Group (JPEG) Std., Society of Motion Picture and Television Engineers (SMPTE) Test Pattern).
{0}------------------------------------------------
Image /page/0/Picture/0 description: The image shows the logo of the U.S. Food and Drug Administration (FDA). On the left is the Department of Health & Human Services logo. To the right of that is the FDA logo, which is a blue square with the letters "FDA" in white. To the right of the square is the text "U.S. FOOD & DRUG ADMINISTRATION" in blue.
iSchemaView, Inc. Jim Rosa SVP Regulatory and Quality 1120 Washington Ave. Suite 200 Golden, CO 80401
January 16, 2024
# Re: K233512
Trade/Device Name: Rapid (6.0) Regulation Number: 21 CFR 892.2050 Regulation Name: Medical Image Management and Processing System Regulatory Class: Class II Product Code: QIH, LLZ Dated: December 26, 2023 Received: January 12, 2024
Dear Jim Rosa:
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).
{1}------------------------------------------------
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,
Jessica Lamb
Jessica Lamb Assistant Director Imaging Software Team 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
{2}------------------------------------------------
# Indications for Use
Submission Number (if known)
K233512
Device Name Rapid (6.0)
Indications for Use (Describe)
Rapid is an image processing software package to be used by trained professionals,including but not limited to physicians and medical technicians. The software runs ona standard off-the-shelf computer or a virtual platform, such as VMware, and can be used to perform image viewing, processing and analysis of images. Data and images are acquired through DICOM compliant imaging devices.
Rapid provides both viewing and analysis capabilities for functional and dynamic imaging datasets acquired with CT Perfusion (CTP). CT Angiography (CTA), and MRI including a Diffusion Weighted MRI (DWI) Module and a Dynamic Analysis Module (dynamic contrast-enhanced imaging data for MRI and CT).
The CT analysis includes NCCT maps showing areas of hypodense and hyperdense tissue.
The DWI Module is used to visualize local water diffusion properties from the analysis of diffusion weighted MRI data.
The Dynamic Analysis Module is used for visualization and analysis of dynamic imaging data, showing properties of changes in contrast over time. This functionality includes calculation of parameters related to tissue flow (perfusion) and tissue blood volume.
Rapid CT-Perfusion and Rapid MR-Perfusion can be used by physicians to aid in the selection of acute stroke patients (with known occlusion of the intracranial internal carotid artery or proximal middle cerebral artery)Instructions for the use of contrast agents for this indication can be found in Appendix A of the User's Manual. Additional information for safe and effective drug use is available inthe product-specific iodinated CT and gadolinium-based MR contrast drug labeling.
In addition to the Rapid imaging criteria, patients must meet the clinical requirements for thrombectomy, as assessed by the physician, and have none of the following contraindications or exclusions:
- · Bolus Quality: absent or inadequate bolus.
- · Patient Motion: excessive motion leading to artifacts that make the scan technically inadequate
- Presence of hemorrhage
Type of Use (Select one or both, as applicable)
Prescription Use (Part 21 CFR 801 Subpart D)
Over-The-Counter Use (21 CFR 801 Subpart C)
# CONTINUE ON A SEPARATE PAGE IF NEEDED.
{3}------------------------------------------------
This section applies only to requirements of the Paperwork Reduction Act of 1995.
#### *DO NOT SEND YOUR COMPLETED FORM TO THE PRA STAFF EMAIL ADDRESS BELOW.*
The burden time for this collection of information is estimated to average 79 hours per response, including the time to review instructions, search existing data sources, gather and maintain the data needed and complete and review the collection of information. Send comments regarding this burden estimate or any other aspect of this information collection, including suggestions for reducing this burden, to:
> Department of Health and Human Services Food and Drug Administration Office of Chief Information Officer Paperwork Reduction Act (PRA) Staff PRAStaff(@fda.hhs.gov
"An agency may not conduct or sponsor, and a person is not required to respond to, a collection of information unless it displays a currently valid OMB number."
{4}------------------------------------------------
## 510(k) Summary
## iSchemaView, Inc.'s Rapid
This document contains the 510(k) summary for the iSchemaView Rapid Platform. The content of this summary is based on the requirements of 21 CFR Section 807.92(c).
#### Applicant Name and Address:
| Name: | iSchemaView, Inc. |
|-------------------|------------------------------------------------------------------|
| Address: | 1120 Washington St., Suite 200<br>Golden, CO 80401 |
| Official Contact: | Jim Rosa<br>Phone: (303) 704-3374<br>Email: rosa@ischemaview.com |
#### Summary Preparation Date: January 12, 2024
## Device Name and Classification:
| Trade Name: | iSchemaView Rapid Platform |
|--------------------------|---------------------------------------------------|
| Common Name: | PACS – Picture Archiving Communications<br>System |
| Classification: | II |
| Product Code: | Primary: QIH, Secondary: LLZ |
| Regulation No: | 21 C.F.R. §892.2050 |
| Classification<br>Panel: | Radiology Devices |
#### Predicate Devices:
The iSchemaView Rapid is claimed to be substantially equivalent to the following legally marketed predicate devices:
Primary: iSchemaView Rapid (K213165)
# Previous Related FDA Submission:
iSchemaView Rapid (K121447) - Initial Rapid Clearance
#### Device Description:
Rapid is a software package that provides for the visualization and study of changes in tissue using digital images captured by diagnostic imaging systems including CT (Computed Tomography) and MRI (Magnetic Image Resonance), as an aid to physician diagnosis. Rapid can be installed on a customer's Server or it can be accessed online as a virtual system. It provides viewing, quantification, analysis and reporting capabilities.
Rapid works with the following types of (DICOM compliant) medical image data:
{5}------------------------------------------------
- CT (Computed Tomography) ●
- MRI(Magnetic Image Resonance) ●
Rapid acquires (DICOM compliant) medical image data from the following sources:
- . DICOM file
- DICOM CD-R
- Network using DICOM protocol.
Rapid provides tools for performing the following types of analysis:
- selection of acute stroke patients for endovascular thrombectomy
- . volumetry of thresholded maps
- time intensity plots for dynamic time courses ●
- . measurement of mismatch between labeled volumes on co-registered image volumes
- large vessel density ●
Rapid is a Software as a Medical Device (SaMD) consisting of one or more Rapid Servers (dedicated or virtual) in on-premises or hybrid (on-premises/cloud) configurations. The Rapid Server is an image processing engine that connects to a hospital LAN, or inside the Hospital Firewall in the on-premises configuration or in conjunction with a secure link to the cloud in the hybrid configuration. It can be a dedicated Rapid Server or a VM Rapid appliance, which is a virtualized Rapid Server that runs on a dedicated server.
Rapid is designed to streamline medical image processing tasks that are time consuming and fatiguing in routine patient workup. Once Rapid is installed it operates with minimal user interaction. Once the CT (NCCT, CT, CTA) or MR (MR, MRA) data are acquired, the CT or MRI console operator selects Rapid as the target for the DICOM images, and then the operator selects which study/series data to be sent to Rapid. Based on the type of incoming DICOM data. Rapid will identify the data set scanning modality and determine the suitable processing module. The Rapid platform is a central control unit which coordinates the execution image processing modules which support various analysis methods used in clinical practice today:
- Rapid CTP/MRP, DWI, Dynamic Analysis (Original: K121447, Updated with K172477; . and K182130)
- Rapid CTA (K172477) ●
- Rapid ASPECTS(K190395)
- Rapid ICH (K193087, K221436)
- Rapid LVO (K200941, K221248)
- Rapid PETN (K220499)
- Rapid RVLV (K223396
- Rapid NCCT Stroke (K222884)
- . Rapid ANRT (K230074)
- Rapid SDH (K232436) ●
{6}------------------------------------------------
The iSchemaView Server is a dedicated server that provides a central repository for Rapid data. All iSchemaView Server data is stored on encrypted hard drives within the hospital infrastructure. It also provides a user interface for accessing Rapid data. It connects to a firewalled Data Center Network and has its own firewall for additional cyber/data security. The iSchemaView Server connects to one or more Rapid Servers via WAN. Available types of connection include VPN (Virtual Private Network - RFC2401 and RFC4301 Standards) Tunnel and SSH (Secure Shell).
# Indications for Use:
Rapid is an image processing software package to be used by trained professionals, including but not limited to physicians and medical technicians. The software runs on a standard off-the-shelf computer or a virtual platform, such as VMware, and can be used to perform image viewing, processing and analysis of images. Data and images are acquired through DICOM compliant imaging devices.
Rapid provides both viewing and analysis capabilities for functional and dynamic imaging datasets acquired with CT Perfusion (CTP), CT Angiography (CTA), and MRI including a Diffusion Weighted MRI (DWI) Module and a Dynamic Analysis Module (dynamic contrast-enhanced imaging data for MRI and CT).
The CT analysis includes NCCT maps showing areas of hypodense and hyperdense tissue.
The DWI Module is used to visualize local water diffusion properties from the analysis of diffusion - weighted MRI data.
The Dynamic Analysis Module is used for visualization and analysis of dynamic imaging data, showing properties of changes in contrast over time. This functionality includes calculation of parameters related to tissue flow (perfusion) and tissue blood volume.
Rapid CT-Perfusion and Rapid MR-Perfusion can be used by physicians to aid in the selection of acute stroke patients (with known occlusion of the intracranial internal carotid artery or proximal middle cerebral artery)
Instructions for the use of contrast agents for this indication can be found in Appendix A of the User's Manual. Additional information for safe and effective drug use is available in the product-specific iodinated CT and gadolinium-based MR contrast drug labeline.
In addition to the Rapid imaging criteria, patients must meet the clinical requirements for thrombectomy, as assessed by the physician, and have none of the following contraindications or exclusions:
- . Bolus Quality: absent or inadequate bolus.
- Patient Motion: excessive motion leading to artifacts that make the scan technically . inadequate
- Presence of hemorrhage ●
{7}------------------------------------------------
# Technological Characteristics:
Rapid performs the following functions:
- . processes DICOM images from multiple sources to provide visualization of changes of tissue perfusion, diffusion and change.
- . receives DICOM images from external DICOM image providers (modalities (CT/MRI Scanners), PACS and Workstations) and sends DICOM images to external image consumers.
- . processes requests, statuses and results, and references therein, which are stored in a searchable database.
- processing status is available through a web browser using HTTP, HTML and PHP.
- can send summary results to the user over email. For this, Rapid generally connects to ● the infrastructure of the medical partner (e.g., the hospital). Rapid uses a SMTP protocol with security extensions to provide secure communications.
Rapid is available in the following configurations:
- Standard Rapid, which is installed directly on a customer's Linux-based server and . integrated with medical image processing software such as commercial PACS.
- . Virtual Rapid, wherein the user accesses Rapid online and uses it to process DICOM images otherwise available on his/her computer.
Rapid is a DICOM-compliant PACS software that provides comprehensive functionality to transfer, process, and display modality specific imaging data. Rapid runs on standard "offthe- shelf' computer and networking hardware. Rapid is entirely independent from CT, MRI, or independent PACS platforms. It supports secure VPN (Virtual Private Network) networking or encapsulated Secure Shell (SSH), and seamlessly integrates into an existing radiological data network.
# Clinical Characteristics:
The primary users of Rapid software are medical imaging professionals who analyze tissue using CT or MRI images. The images generated by Rapid provide additional diagnostic information, which is derived from the temporal/diffusion/density features of the native CT or MRI images.
Rapid CT Perfusion and Rapid MRI can be used by physicians to select acute stroke patients for endovascular thrombectomy. The recommended selection criteria are listed in the table below. Patients must meet the clinical requirements for thrombectomy as assessed by the physician.
# Performance Standards:
Rapid has been developed in conformance with the following standards, as applicable:
| EN ISO 14971:2019 | Application of Risk Management to Medical Devices |
|-------------------|---------------------------------------------------------|
| IEC 62304:2016 | Medical device software – Software lifecycle processes |
| IEC 62366:2015 | Application of Usability Engineering to Medical Devices |
{8}------------------------------------------------
NEMA PS 3.1 - 3.20 Digital Imaging and Communications in Medicine (DICOM)
# Performance Data:
Rapid complies with DICOM (Digital Imaging and Communications in Medicine) - Developed by the American College of Radiology and the National Electrical Manufacturers Association. NEMA PS 3.1 - 3.20.
Additionally, iSchemaView conducted extensive performance validation testing and software verification and validation testing of the Rapid system. This performance validation testing demonstrated that the Rapid system provides accurate representation of key processing parameters under a range of clinically relevant parameters and perturbations associated with the intended use of the software. Software performance, validation and verification testing demonstrated that the Rapid system met all design requirements and specifications.
# Prescriptive Statement:
Caution: Federal law restricts this device to sale by or on the order of a physician.
# Safety & Effectiveness:
Rapid has been designed, verified and validated in compliance with 21 CFR, Part 820.30 requirements. The device has been designed to meet the requirements associated with EN ISO 14971:2019 (risk management). The Rapid System performance has been validated with phantom and case data.
# Substantial Equivalence:
Rapid is as safe and effective as the previously cleared Rapid (K213165) with an extension of installation in a hybrid configuration (on-premises and hybrid). Rapid has the same intended use and similar indications, technological characteristics and principles of operation as its predicate devices. Rapid raises no new issues of safety or effectiveness compared to Rapid (K2131650), as demonstrated by the testing conducted with Rapid. Thus, Rapid Platform v6.0 software is substantially equivalent.
| Parameter | Rapid Platform v6 | Rapid (K213165) Primary Predicate |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Product Code | LLZ, QIH | LLZ, QIH |
| Regulation | 21 CFR §892.2050 | 21 CFR §892.2050 |
| Intended Use/<br>Indications for<br>Use | iSchemaView's Rapid is an image<br>processing software package to be used<br>by trained professionals, including but<br>not limited to physicians and medical<br>technicians. The software runs on a<br>standard off-the-shelf computer or a<br>virtual platform, such as VMware, and<br>can be used to perform image viewing,<br>processing and analysis of images. Data<br>and images are acquired through<br>DICOM compliant imaging devices.<br>The iSchemaView Rapid provides both | iSchemaView's Rapid is an image<br>processing software package to be used<br>by trained professionals, including but<br>not limited to physicians and medical<br>technicians. The software runs on a<br>standard off-the-shelf computer or a<br>virtual platform, such as VMware, and<br>can be used to perform image viewing,<br>processing and analysis of images. Data<br>and images are acquired through<br>DICOM compliant imaging devices.<br>The iSchemaView Rapid provides both |
| viewing and analysis capabilities for<br>functional and dynamic imaging<br>datasets acquired with CT/CBCT<br>Perfusion (CTP/CBCTP), CT<br>Angiography (CTA), and MRI<br>including a Diffusion Weighted MRI<br>(DWI) Module and a Dynamic Analysis<br>Module (dynamic contrast-enhanced<br>imaging data for MRI and CT). | viewing and analysis capabilities for<br>functional and dynamic imaging<br>datasets acquired with CT/CBCT<br>Perfusion (CTP/CBCTP), CT<br>Angiography (CTA), and MRI<br>including a Diffusion Weighted MRI<br>(DWI) Module and a Dynamic Analysis<br>Module (dynamic contrast-enhanced<br>imaging data for MRI and CT). | |
| The CT analysis includes NCCT maps<br>showing areas of hypodense and<br>hyperdense tissue. | The CT analysis includes NCCT maps<br>showing areas of hypodense and<br>hyperdense tissue. | |
| The DWI Module is used to visualize<br>local water diffusion properties from the<br>analysis of diffusion - weighted MRI<br>data. | The DWI Module is used to visualize<br>local water diffusion properties from the<br>analysis of diffusion - weighted MRI<br>data. | |
| The Dynamic Analysis Module is used<br>for visualization and analysis of<br>dynamic imaging data, showing<br>properties of changes in contrast over<br>time. This functionality includes<br>calculation of parameters related to<br>tissue flow (perfusion) and tissue blood<br>volume. | The Dynamic Analysis Module is used<br>for visualization and analysis of<br>dynamic imaging data, showing<br>properties of changes in contrast over<br>time. This functionality includes<br>calculation of parameters related to<br>tissue flow (perfusion) and tissue blood<br>volume. | |
| Rapid CT-Perfusion and Rapid MR-<br>Perfusion can be used by physicians to aid<br>in the selection of acute stroke patients<br>(with known occlusion of the intracranial<br>internal carotid artery or proximal middle<br>cerebral artery) | Rapid CT-Perfusion and Rapid MR-<br>Perfusion can be used by physicians to aid<br>in the selection of acute stroke patients<br>(with known occlusion of the intracranial<br>internal carotid artery or proximal middle<br>cerebral artery) | |
| Instructions for the use of contrast agents<br>for this indication can be found in<br>Appendix A of the User's Manual.<br>Additional information for safe and<br>effective drug use is available in the<br>product-specific iodinated CT and<br>gadolinium-based MR contrast drug<br>labeling. | Instructions for the use of contrast agents<br>for this indication can be found in<br>Appendix A of the User's Manual.<br>Additional information for safe and<br>effective drug use is available in the<br>product-specific iodinated CT and<br>gadolinium-based MR contrast drug<br>labeling. | |
| In addition to the Rapid imaging criteria,<br>patients must meet the clinical<br>requirements for thrombectomy, as<br>assessed by the physician, and have none of<br>the following contraindications or<br>exclusions. | In addition to the Rapid imaging criteria,<br>patients must meet the clinical<br>requirements for thrombectomy, as<br>assessed by the physician, and have none of<br>the following contraindications or<br>exclusions. | |
| Contraindications/Exclusions: | Contraindications/Exclusions: | |
| | Bolus Quality: absent or inadequate bolus. Patient Motion: excessive motion leading to artifacts that make the scan technically inadequate. Presence of hemorrhage | Bolus Quality: absent or inadequate bolus. Patient Motion: excessive motion leading to artifacts that make the scan technically inadequate. Presence of hemorrhage |
| Basic PACS<br>Functions | Software package which interfaces to a<br>PACS or allows viewing within the<br>application | Same |
| Computer<br>Platform | Standard off-the-shelf Hardware: On-<br>Premises | Standard off-the-shelf Hardware: Hybrid (on-<br>premises/cloud) |
| Software | Traditional Coding for platform | Traditional Coding for platform |
| DICOM<br>Compliance | Yes | Yes |
| Functional<br>Overview | Rapid is a software package that<br>provides for the visualization and study<br>of changes of tissue in digital images<br>captured by CT and MRI. Rapid<br>provides viewing and quantification.<br>The base Platform provides common<br>services to the imaging modules | Same |
| Data/Image<br>Types | Computed Tomography (CT) via<br>DICOM Format | Same |
| | Magnetic Image Resonance (MRI) via<br>DICOM Format | Same |
{9}------------------------------------------------
{10}------------------------------------------------
# Conclusion:
In conclusion, the iSchemaView Rapid is substantially equivalent in intended use, technological characteristics, safety, and performance characteristics to the legally marketed predicate devices, Rapid (K213165).
Predicate graph will load when search results are available.
Embedding visualization will load when search results are available.
PDF viewer will load when search results are available.
Loading panels...
Select an item from Submissions
Click any panel, subpart, regulation, product code, or device to see details here.
Section Matches
Results will appear here.
Product Code Matches
Results will appear here.
Special Control Matches
Results will appear here.
Loading collections...
Loading
My Alerts
You will receive email notifications based on the filters and frequency you set for each alert.
Sort by:
Create Alert
Search Filters
Agent Token
Create a read-only bearer token for Claude, ChatGPT, or other agents that can call HTTP APIs.
Copy this now. It will not be shown again.
Connected apps
Apps you authorized through browser sign-in. Disconnecting revokes their access immediately.
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.