EXA™ is a software device that receives digital images and data from various sources (i.e. CT scanners, MR scanners, ultrasound systems, R/F Units, computed & direct radiographic devices, secondary capture devices, scanners, imaging gateways or other imaging sources). Images and data can be stored, communicated, processed and displayed within the system and or across computer networks at distributed locations. Lossy compressed mammographic images are not intended for diagnostic review. Mammographic images should only be viewed with a monitor cleared by FDA for viewing mammographic images. For primary diagnosis, post process DICOM "for presentation" images must be used. Typical users of this system are trained professionals, nurses, and technicians.
Device Story
EXA™ is a web-based PACS software suite for DICOM image management. It receives digital images/data from various modalities (CT, MR, US, R/F, CR, DR) via DICOM protocol. The system enables storage, communication, processing, and display of images across computer networks. Operated by trained professionals, nurses, and technicians on Windows-based PCs with internet access, it provides tools for viewing, annotating, transmitting, printing, and animating images. Key features include multiplanar reconstruction (MPR) with rotating maximum intensity projection (MIP), web-based worklists, multilingual interface support, and peer review modules. The device facilitates clinical decision-making by providing radiologists and clinicians access to diagnostic-quality images for review and reporting. It benefits patients by enabling efficient image distribution and collaborative diagnostic workflows.
Clinical Evidence
No clinical data. Bench testing only. Software verification and validation were performed to confirm the device meets software requirements specifications. Risk analysis was conducted.
Technological Characteristics
Software-only PACS; web-based application suite. Operates on Windows PCs via AC power. Supports DICOM protocol for image transmission/viewing. Features include multiplanar reconstruction (MPR), maximum intensity projection (MIP), and multilingual interface. Connectivity via local area networks and internet. Uses Wavelet/JPEG2000 compression.
Indications for Use
Indicated for trained professionals, nurses, and technicians to store, communicate, process, and display digital medical images (CT, MR, US, R/F, CR, DR) across networks. Not for diagnostic review of lossy compressed mammographic images.
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).
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Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
December 16, 2014
Viztek LLC % Mr. Daniel Kamm Principal Engineer Kamm & Associates 8870 Ravello Court NAPLES FL 34114
Re: K142919
Trade/Device Name: EXATM Regulation Number: 21 CFR 892.2050 Regulation Name: Picture archiving and communications system Regulatory Class: II Product Code: LLZ Dated: November 17, 2014 Received: November 19, 2014
Dear Mr. Kamm:
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 (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. 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.
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 (reporting of medical device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
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If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Industry and Consumer Education at its toll-free number (800) 638 2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/Resourcesfor You/Industry/default.htm. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to
http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely yours,
Robert A. Ochs
Robert A. Ochs. Ph.D. Acting Director Division of Radiological Health Office of In Vitro Diagnostics and Radiological Health Center for Devices and Radiological Health
Enclosure
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# Indications for Use
510(k) Number (if known)
K142919
Device Name EXATM
#### Indications for Use (Describe)
EXA™ is a software device that receives digital images and data from various sources (i.e. CT scanners, ultrasound systems, R/F Units, computed & direct radiographic devices, secondary capture devices, scanners, imaging gateways or other imaging sources). Images and data can be stored, communicated, processed and displayed within the system and or across computer networks at distributed locations. Lossy compressed mammographic images are not intended for diagnostic review. Mammographic images should only be viewed with a monitor approved by FDA for viewing mammographic images. For primary diagnosis, post process DICOM "for presentation" images must be used. Typical users of this system are trained professionals, nurses, and technicians.
## Type of Use (Select one or both, as applicable)
2 Prescription Use (Part 21 CFR 801 Subpart D)
Over-The-Counter Use (21 CFR 801 Subpart C)
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## FOR FDA USE ONLY
Concurrence of Center for Devices and Radiological Health (CDRH) (Signature)
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510(k) Summary, 510(k) Number K142919 Viztek, LLC. 6950 Philips Hwy Jacksonville, FL 32216 Phone: 800.366.5343, Fax: 904.448.9936 Date Prepared: November 3, 2014 Contact: Josip Cermin, President
- 1. Identification of the Device: Proprietary-Trade Name: EXA™ Classification Name: Picture Archiving and Communications System Product Code LLZ Regulation 892.2250 Common/Usual Name: PACS System
- 2. Equivalent legally marketed device: Viztek OPAL-RAD™ (K063337).
- 3. Indications for Use (intended use). EXA™ is a software device that receives digital images and data from various sources (i.e. CT scanners, MR scanners, ultrasound systems, R/F Units, computed & direct radiographic devices, secondary capture devices, scanners, imaging gateways or other imaging sources). Images and data can be stored, communicated, processed and displayed within the system and or across computer networks at distributed locations. Lossy compressed mammographic images are not intended for diagnostic review. Mammographic images should only be viewed with a monitor cleared by FDA for viewing mammographic images. For primary diagnosis, post process DICOM "for presentation" images must be used. Typical users of this system are trained professionals, nurses, and technicians.
- 4. Description of the Device: EXA™ is a software suite of web based PACS applications that was developed specifically to handle the DICOM protocol, for both transmitting and viewing DICOM images and data elements. The applications were developed so that access to the PACS can occur from any Microsoft Windows computer with internet capabilities, and offer an interface that users find to be quite intuitive after some initial learning. (Not intended for use on mobile devices) The EXA™ applications deal with all manner of DICOM images and modalities, including MR, CT, CR, US, MG and many others. These images can be viewed, annotated, transmitted to other facilities, printed, animated and stored using the EXA™ RAD suite.
- 5. Safety and Effectiveness, comparison to predicate device. The results of software validation and comparison to our predicate device indicates that the new device is as safe and effective as our predicate device. Clinical images collected demonstrate equal or better image quality as compared to our predicate.
- 6. Substantial Equivalence Chart Follows
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| Characteristic | Viztek OPAL-RAD™ (K063337). | EXA™ K142919 (This submission) |
|----------------------------|------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Intended Use: | Opal-RAD™ is a software device that | EXA™ is a software device that receives |
| | receives digital images and data from | digital images and data from various sources |
| (Unchanged) | various sources (i.e. CT scanners, MR | (i.e. CT scanners, MR scanners, ultrasound |
| The indications statement | scanners, ultrasound systems, R/F Units, | systems, R/F Units, computed & direct |
| is unchanged from our | computed & direct radiographic devices, | radiographic devices, secondary capture |
| predicate. | secondary capture devices, scanners, | devices, scanners, imaging gateways or other |
| | imaging gateways other or imaging | imaging sources). Images and data can be |
| | sources). Images and data can be stored, | stored, communicated, processed and |
| | communicated, processed and displayed | displayed within the system and or across |
| | within the system and or across computer | computer networks at distributed locations. |
| | networks at distributed locations. Lossy | Lossy compressed mammographic images are |
| | compressed mammographic images are | not intended for diagnostic review. |
| | not intended for diagnostic review. | Mammographic images should only be |
| | Mammographic images should only be | viewed with a monitor cleared by FDA for |
| | viewed with a monitor approved by FDA | viewing mammographic images. For primary |
| | for viewing mammographic images. For | diagnosis, post process DICOM "for |
| | primary diagnosis, post process DICOM | presentation" images must be used. Typical |
| | "for presentation" images must be used. | users of this system are trained professionals, |
| | Typical users of this system are trained | nurses, and technicians. (SAME) |
| | professionals, nurses, and technicians. | |
| Configuration | This submission is Software only | SAME |
| Film Digitizer | Part of the system | NO |
| DICOM | Yes | Yes |
| Compression | Wavelet/JPEG2000 | SAME |
| Improvements to perform | NO | YES,<br>• The ability to rotate of MIP in MPR mode was the added function.<br>• Verify Multiplanar reconstruction |
| Imaging work | | |
| Expanded GUI interface to | NO | YES, Expanded GUI Interface for users-<br>changes to allow client EXA to function with Web |
| integrate more effectively | | |
| with the WEB | | |
| Language Capability | NO | YES, Ability to use multilingual interface to<br>client's operating system (i.e foreign country multi-language translation from English).<br>Allows interpretation of Spanish and<br>Portuguese |
| | | |
| | | |
| Worklist Expansion | NO | YES, Web Work list- includes most of the |
| - WEB Worklist | | advanced study list features and the entire |
| - Client Worklist | | Image Viewing features, but cannot create |
| | | Patient CDs or Import images and scanned |
| | | documents. Verify Client Worklist- Includes |
| | | all the advanced Study List and Image |
| | | Viewing features mentioned above. Available |
| | | modules in the client worklist provide the |
| | | following: Sending and Receiving images |
| | | over phone line, local area networks and the |
| | | Internet. Included in this includes DICOM |
| | | transmission/receive. |
| Verify PACS Backend - | NO | YES, Ability to add clarity to DICOM images |
| DICOM Improvements | | has been allowed |
| Improvements to Panel | NO | YES |
| Guide PACS – UAI | | |
| Multifunctional Interface | | |
| Characteristic | Viztek OPAL-RAD™ (K063337). | EXA™ K142919 (This submission) |
| Module Updates | NO | YES,<br>Peer Review-Allows a radiologist to review a report from a second radiologist Exam Report Module functions per specification |
| Computer | PC | SAME |
| Power source | AC Line (PC Required) | AC Line (PC Required) |
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- 7. Summary of Bench Testing Conducted: Software Verification and Validation was performed.. Risk Analysis was conducted. The testing showed that the device meets its predetermined Software Requirements Specifications.
- 8. Summary of Clinical Testing: Not applicable. The software acquires images via a DICOM network connection from FDA cleared imaging devices.
- 9. Conclusion: After analyzing software validation and risk analysis, it is the conclusion of Viztek Inc that the EXA™ is as safe and effective as the predicate device, have few technological differences, and has the same indications for use, thus rendering it 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.