The Viatronix V3D Explorer is intended to be used for the display and 2D/3D visualization of medical image data derived from CT, MRI, PET and SPECT scans of the human body including any organ. The volume , linear and angular measurement functions are intended for the evaluation and quantification of tumor or selected organ volume/linear measurements, angular location/ displacement, study/ analysis and evaluation of both hard and soft tissues as well as other internal organ structures for polyp, lesion, mass, implants, fracture, aneurysms, stenoses etc or evaluation of any abnormality / malformation in specified organs obtained from scanning. It also supports the interactive segmentation of any organ by removing certain structure(s) from display for critical evaluation of selected part(s) of organ. It is intended for use by radiologists, clinicians and referring physicians to acquire, process, render, evaluate, archive, print and distribute DICOM 3.0 compliant specified organ image studies, utilizing PC hardware.
Device Story
Viatronix V3D Explorer is a software module for medical image processing; functions as an add-on to Viatronix V3D visualization system. Inputs: DICOM-formatted multi-slice CT, MR, PET, or SPECT scans. Processing: converts DICOM data into internal volume data format; performs direct volume rendering for 2D/3D visualization; supports interactive segmentation, volume, linear, and angular measurements. Output: rendered 2D/3D images and quantitative data for clinical evaluation. Used in clinical settings by radiologists, clinicians, and referring physicians on PC hardware. Enables critical evaluation of organ abnormalities, masses, or lesions; facilitates clinical decision-making through enhanced visualization and quantification of anatomical structures.
Clinical Evidence
Comparative evaluation performed using patient organ image datasets. Scanned images were processed by both the predicate device and V3D Explorer. Results of evaluation and quantification were recorded and compared. No significant differences were detected between the subject and predicate devices.
Technological Characteristics
Software-based image processing system; utilizes direct volume rendering for 3D visualization. Supports DICOM 3.0 standard. Operates on PC hardware. Features include multi-planar reformatting, interactive segmentation, and measurement tools (volume, linear, angular).
Indications for Use
Indicated for radiologists, clinicians, and referring physicians to visualize and analyze medical images (CT, MRI, PET, SPECT) of any human organ. Used for evaluation and quantification of hard/soft tissues, tumors, polyps, lesions, masses, implants, fractures, aneurysms, and stenoses.
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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EXHIBIT #1 4 pages
# 510(K) SUMMARY
K022739
This summary of 510(k) safety and effectiveness information is being submitted in accordance with the requirements of SMDA 1990 and 21 CFR §807.92.
The assigned 510(k) number is: ____________________________
#### 1. Submitter's Identification:
Viatronix Inc. 25 East Loop Road Suite 203/ 204 Stony Brook, NY 11790 Establishment Registration number- 2438935
Contact: Baman Pattanayak, Director of QA/RA
Date Summary Prepared:
August 05, 2002
#### 2. Name of the Device:
a) Device trade name: Viatronix V3D Explorer, revision 1.0 b) Device common name: Medical Image processing software system c) Classification name: 90LLZ- Image Processing system
#### 3. Predicate Device Information:
Predicate Device #1: G.E. Navigator, 510(k) # K954355. This system is an add-on to the Advantage Windows Workstation. Many features in the manual reference the base workstation manuals.
Predicate Device #2: Vital Images Vitrea 2, Version 2.1, 510(k) # K002519.
Predicate Device #3: Viatronix Visualization System, 510(k) # K002780. This system name is sometimes abbreviated as VVS.
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#### 4. Device Description:
The V-3D Explorer is a software device for evaluating scanned images of selected human organ. It is an additional image processing option added to our V-3D visualization system for which pre-market clearance was granted by the FDA vide K#002780, dated November 17, 2000. It is a general software module, designed for use as a part of our V-3D visualization system core technology. The system consists of a V-3D processor and a V-3D viewer in two computer configuration or V-3D processor and V3D viewer in a stand alone one computer configuration. Upon receipt of a multi-slice CT or MR scan image for any selected organ in a DICOM format, the V-3D processor converts the DICOM image data into an internally recognized volume data format using our core software. technology. The V-3D viewer provides interactive orthogonal and multiplanar reformatted 2D and 3D images from the V-3D processor and user can evaluate these images for any abnormality or malformation in specified organs obtained from scanned images. The volume, linear and angular measurement features provided in the software for the evaluation and quantification of organ volume, linear measurements, angular location/displacement for hard and soft tissues as well as internal organ structures for polyp, lesion, mass, tumor, implants, fracture, aneurysms, stenoses etc. The software also supports interactive segmentation of any organ from removing certain structure from display for critical evaluation of selected part of organ. The intended user can use the software device to acquire, process, render, evaluate, archive, print and distribute DICOM 3.0 compliant images of any organ, utilizing PC hardware.
#### 5. Indications for Use:
The Viatronix V3D Explorer is intended to be used for the display and 2D/3D visualization of medical image data derived from CT, MRI, PET and SPECT scans of the human body including any organ. The volume , linear and angular measurement functions are intended for the evaluation and quantification of tumor or selected organ volume/linear measurements, angular location/ displacement, study/ analysis and evaluation of both hard and soft tissues as well as other internal organ structures for polyp, lesion, mass, implants, fracture, aneurysms, stenoses etc or evaluation of any abnormality / malformation in specified organs obtained from scanning. It also supports the interactive segmentation of any organ by removing certain structure(s) from display for critical evaluation of selected part(s) of organ. It is intended for use by radiologists. clinicians and referring physicians to acquire, process, render, evaluate, archive, print and distribute DICOM 3.0 compliant specified organ image studies, utilizing PC hardware.
#### 6. Comparison to Predicate Devices:
The Viatronix V3D Explorer Module (V3D Explorer) utilizes the same technological characteristics as the three predicate devices. All provide multi-view user interfaces with combinations of 2D and 3D views correlated together for enhanced visualization. All provide window/level adjustment of the 2D and 3D views to enhance
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features, provide measurement tools for analysis of the observed structures, provide region of interest selection tools to isolate specific features, provide annotation tools to help indicate and describe findings, and provide integrated reporting to distribute the findings.
V3D Explorer and all three predicates provide external 3D views. As with Vitrea 2 and VVS, the V3D Explorer Module utilizes direct volume rendering for all of its 3D views, including transparent volume images and visible surface views. G.E. Navigator utilizes surface extraction techniques for all 3D views. For changing the mapping to opacity during translucent views, V3D Explorer is similar to Vitrea 2 and VVS devices because all use the same technique of volume rendering.
We conclude that the subject device, the Viatronix V3D Explorer, is as safe and effective as the predicate devices and poses no new questions of safety and effectiveness.
### 7. Discussion of Non-Clinical Tests Performed for Determination of Substantial Equivalence are as follows:
Scanned image datasets of various patients organs with known abnormalities or status were used as input for testing of software functionalities in accordance with a test protocol. The V3D Explorer software module provided interactive orthogonal and multiplanar reformatted 2D and 3D images from datasets to detect and evaluate the known abnormalities or status of organs. The volume, linear and angular measurement features provided in the software were used to evaluate and quantify any abnormality of organs or status of any internal organ structures.
The V3D Explorer Module has been developed in a manner consistent with accepted standards for software development, including both unit and system integration testing protocols. Testing on phantom datasets has determined its level of accuracy, which correlates perfectly with pre-calculated values. The product has shown itself to be reliable, easy to use and capable of evaluating DICOM 3.0 compliant scanned images of any human organs.
We conclude from these tests that V3D Explorer module is substantially equivalent to the predicate devices in its ability to evaluate any human organs.
### 8. Discussion of Clinical Tests\Evaluations Performed:
Tests and validations on Patients' various organs were performed per protocol. Loaded Patients' scanned organs images to the predicate device. Evaluated various organs using the predicate device and recorded the results of evaluation and quantification.
Same scanned organ images were loaded into the Viatronix V3D Explorer application. Evaluated all Patients' various organs using V3D Explorer application, and recorded the results of evaluation and quantification.
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Evaluation results of both predicate device and V3D Explorer device were same and no significant differences were detected in the results of evaluation.
In conclusion, it was established that the V3D Explorer application is substantially equivalent to the predicate devices.
#### 9. Conclusions:
The Viatronix V3D Explorer has the same intended use and similar technological characteristics as the GE Navigator (K # 954355) Vital Images Vitrea 2, Version 2.1 (K # 002519) and Viatronix Visualization System ( K# 002780). Moreover, tests and validations using Patients' Image data and non-clinical tests performed demonstrated that the Viatronix V3D Explorer application is substantially equivalent to the predicate devices in its ability to review, analyze and evaluate CT/ MR scan images of various organs to facilitate analysis and evaluation of abnormality or malformation in organs by a trained physician. The Viatronix V3D Explorer application does not raise any new questions of safety or effectiveness.
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# DEPARTMENT OF HEALTH & HUMAN SERVICES
Image /page/4/Picture/1 description: The image shows a logo with a stylized bird figure inside a circle. The bird figure is composed of three curved lines, representing the body, wings, and tail. The circle surrounding the bird contains text, which appears to be the name of an organization or department. The text is arranged along the circumference of the circle, with the bird figure positioned in the center.
### Public Health Service
od and Drug Administration rporate Boulevard
# 6 2002
Viatronix, Inc. c/o Jeff D. Rongero Engineer Underwriters Laboratories, Inc. 12 Laboratory Drive Research Triangle Park, NC 27709
### Re: K022789
Trade/Device Name: Viatronix V3D Explorer Regulation Number: 21 CFR 892.2050 Regulation Name: Picture Archiving and Communications System Regulatory Class: Class II Product Code: 90 LLZ Dated: August 20, 2002 Received: August 22, 2002
Dear Mr. Rongero:
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. Iisting of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration.
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); 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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Page 2
This letter will allow you to begin marketing your device as described in your 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Office of Compliance at one of the following numbers, based on the regulation number at the top of this letter:
| 8xx.1xxx | (301) 594-4591 |
|----------------------------------|----------------|
| 876.2xxx, 3xxx, 4xxx, 5xxx | (301) 594-4616 |
| 884.2xxx, 3xxx, 4xxx, 5xxx, 6xxx | (301) 594-4616 |
| 892.2xxx, 3xxx, 4xxx, 5xxx | (301) 594-4654 |
| Other | (301) 594-4692 |
Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its Internet address http://www.fda.gov/cdrh/dsma/dsmamain.html.
Sincerely yours,
Henry C. Brigdon
Nancy C. Brogdon Director, Division of Reproductive, Abdominal, and Radiological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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## INDICATIONS FOR
Page of
# 510(k) Number (if known):
Device Name: Viatronix V3D Explorer
Indications For Use:
The Viatronix V3D Explorer is intended to be used for the display and 2D/3D visualization of medical image data derived from CT, MRI, PET and SPECT scans of the human body including any organ. The volume , linear and angular measurement functions are intended for the evaluation and quantification of turnor or selected organ volume/linear measurements, angular location/ displacement, study/ analysis and evaluation of both hard and soft tissues as well as other internal organ structures for polyp, lesion, mass, implants, fracture, aneurysms, stenoses etc or evaluation of any abnormality / malformation in specified organs obtained from scanning. It also supports the interactive segmentation of any organ by removing certain structure(s) from display for critical evaluation of selected part(s) of organ. It is intended for use by radiologists, clinicians and referring physicians to acquire, process, render, evaluate, archive, print and distribute DICOM 3.0 compliant specified organ image studies, utilizing PC hardware.
# (PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED)
| Concurrence of CDRH, Office of Device Evaluation (ODE) | |
|---------------------------------------------------------------|---------|
| | |
| (Division Sign-Off) | |
| Division of Reproductive, Abdominal, and Radiological Devices | |
| 510(k) Number | K022789 |
Prescription Use OR Over-The-Counter Use
(Per 21 CFR 801.109) (Optional Format 1-2-96)
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.