InVivo Web Viewer is a software application used for the display and 3D visualization of medical image files from scanning devices, such as CT and MRI. It is intended for use by radiologists, clinicians, referring physicians and other qualified individuals to retrieve, process, render, review, assist in diagnosis, utilizing web user interface. Additionally, InVivo Web Viewer is a preoperative software application used for the planning and evaluation of dental implants and surgical treatments. This device is not indicated for mammography use.
Device Story
InVivo Web Viewer is a web-based software application for viewing and manipulating medical images (CT/MRI). Operated by clinicians/physicians in clinical settings via web browsers (Chrome/Firefox), it enables 2D/3D volumetric rendering, image manipulation (rotate, zoom, pan, clipping, brightness/contrast adjustment), and distance measurements. It includes tools for dental implant placement and surgical treatment planning. The device does not perform automated diagnosis; it serves as a visualization tool for qualified professionals to interpret anatomy and plan procedures. It facilitates clinical decision-making by providing interactive 3D views of patient anatomy, aiding in the assessment of dental implants and surgical interventions.
Clinical Evidence
Bench testing only. No clinical data provided. Performance was validated through risk analysis, traceability analysis, design reviews, unit testing, and final acceptance testing. Comparative bench testing against the predicate device confirmed that major function outputs are consistent and the software is stable.
Technological Characteristics
Software-only device; web application architecture. Operates via web browsers (Javascript, HTML, CSS). Supports DICOM 3.0. Provides 2D grayscale and 3D volumetric rendering, distance measurement, and implant placement tools. Does not contact patients or control life-sustaining equipment. Physician-led interpretation.
Indications for Use
Indicated for radiologists, clinicians, and referring physicians to display, visualize, and review CT and MRI medical images for diagnostic assistance and preoperative dental implant/surgical treatment planning. Not indicated for mammography.
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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September 21, 2018
Anatomage Inc. Changxin Xu Regulatory Manager 303 Almaden Blvd. Suite 700 SAN JOSE, CA 95110
Re: K181926
Trade/Device Name: InVivo Web Viewer Regulation Number: 21 CFR 892.2050 Regulation Name: Picture Archiving And Communications System Regulatory Class: Class II Product Code: LLZ Dated: July 13, 2018 Received: July 18, 2018
Dear Changxin Xu:
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. 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 located 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.
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
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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 803) for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/CombinationProducts/GuidanceRegulatoryInformation/ucm597488.htm); good manufacturing practice requirements as set forth in the quality systems (OS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
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 comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/MedicalDevices/DeviceRegulationandGuidance/) and CDRH Learn (http://www.fda.gov/Training/CDRHLearn). 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 (http://www.fda.gov/DICE) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
Hsl 2. Nils
for Robert A. Ochs, Ph.D. 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) K181926
Device Name
InVivo Web Viewer
InVivo Web Viewer is a software application used for the display and 3D visualization of medical image files from scanning devices, such as CT and MRI. It is intended for use by radiologists, clinicians, referring physicians and other qualified individuals to retrieve, process, render, review, assist in diagnosis, utilizing web user interface. Additionally, In Vivo Web Viewer is a preoperative software application used for the planning and evaluation of dental implants and surgical treatments.
This device is not indicated for mammography use.
| Type of Use (Select one or both, as applicable) | |
|-------------------------------------------------|--|
|-------------------------------------------------|--|
X Prescription Use (Part 21 CFR 801 Subpart D)
_ Over-The-Counter Use (21 CFR 801 Subpart C)
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# 5. 510K Summary
#### Submitter Information: ●
Anatomage Inc. 303 Almaden Blvd., Suite 700 San Jose, CA 95110 Phone: (408) 885-1474 Fax: (408) 295-9786
Preparation Date: 7/13/2018
- Contact Person Changxin Xu, Regulatory Manager Phone Number: (408) 885-1474 ext 108
- . Device
•
| Trade Name: | InVivo Web Viewer |
|--------------------|---------------------------------------------|
| Regulation Name: | Picture archiving and communications system |
| Regulation Number: | 21 CFR 892.2050 |
| Product Code: | LLZ |
| 510(k) Number | K181926 |
- 510(k) Number
- . Predicate Device
| Trade Name: | InVivoDental |
|--------------------|---------------------------------------------|
| Regulation Name: | Picture archiving and communications system |
| Regulation Number: | 21 CFR 892.2050 |
| Product Code: | LLZ |
| 510(k) Number | K123519 |
#### Device Description ●
InVivo Web Viewer is an imaging software designed specifically for clinicians, doctors, physicians and other qualified medical professionals. It is used for the visualization of patient image files from scanning devices, such as CT and MRI, and for assisting in case diagnosis, dental implant placement and treatment planning.
It displays 2D image and renders 3D volumetric image in web browser environment such as Google Chrome or Mozilla Firefox. Users are able to examine anatomy on a computer screen and manipulate the rendered image by turning, zooming, clipping, adjusting brightness and contrast and choosing different rendering color presets. User can also make distance measurements on the image and use the implant placement tool for assisting implant placement and surgical treatment planning.
#### Intended Use ●
InVivo Web Viewer is a software application used for the display and 3D visualization of medical image files from scanning devices, such as CT and MRI. It is intended for use by radiologists, clinicians, referring physicians and other qualified individuals to
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retrieve, process, render, review, assist in diagnosis, utilizing web user interface. Additionally, InVivo Web Viewer is a preoperative software application used for the planning and evaluation of dental implants and surgical treatments. This device is not indicated for mammography use.
#### Technological Characteristic .
InVivo Web Viewer is a software only device that handles digital medical images on dedicated workstations. This devices does not contact the patient, nor does it control any life sustaining devices. Diagnosis is not performed by this software but by doctors, physicians and other qualified medical professionals. A physician, providing ample opportunity for competent human intervention, interprets images and information being displayed.
InVivo Web Viewer provides distance measurement tool for facilitating its intended use. The measurement accuracy is the image resolution it reads.
| Item | This Device<br>(InVivo Web Viewer) | Predicate Device<br>(InVivoDental K123519) |
|------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Principle of operation | Web application running in web browser. | Desktop software application. |
| Programming language | Javascript, html, css | C++ |
| Functions | | |
| Image rendering | 2D gray scale rendering and 3D volumetric rendering | 2D gray scale rendering and 3D volumetric rendering |
| Image manipulation | Brightness/contrast adjustment for both 2D and 3D image<br>Rotate, zoom, pan for 3D image<br>Zoom and pan for 2D image<br>Change color presets for 3D image | Brightness/contrast adjustment for both 2D and 3D image<br>Rotate, zoom, pan for 3D image<br>Zoom and pan for 2D image<br>Change color presets for 3D image |
| Mesh rendering | Yes | Yes |
| Measurement | Distance | Distance, angle, area and volume |
| User interface | One tab window | Multiple tab windows |
| Implant placement | Implant placement, move, rotate, delete and parameter change | Implant placement, move, rotate, delete and parameter change |
| Image superposition | No | Yes |
| Annotation | No | Yes |
| Cross section | Yes | Yes |
| Nerve visualization | Can visualize nerve but cannot create | Can create and visualize |
| InVivo Web Viewer and InVivoDental are compared below |
|-------------------------------------------------------|
|-------------------------------------------------------|
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| DICOM 3.0<br>Conformance | Yes | Yes |
|--------------------------|-----|-----|
|--------------------------|-----|-----|
## Analysis of similarities and differences:
The proposed device has similar indication for use and similar basic functions comparing to the predicate device. Both provided the basic functions such as 2D and 3D image visualization and manipulation and implant placement and editing. However, due to the differences in the principle of operation. InVivo Web Viewer has simplified user interface and less tools for user to process the image because it runs in the web browser. The differences does not raise any new potential safety issues.
#### • Non-Clinical Test Results
The following quality assurance measures were applied to the development of the system:
- . Risk Analysis
- . Traceability Analysis
- . Design Reviews
- . Unit testing
- Performance testing
- . Usability testing
- . Final acceptance testing
The documented testing results confirmed that the software is stable and operating as designed. Testing also confirmed that the software has been evaluated for hazards and that risk has been reduced to acceptable and lowest possible levels.
Bench testing of the software with predicate software was performed by evaluation of major function outputs from InVivo Web Viewer and predicate software. This testing confirms that InVivo Web Viewer is as effective as its predicate in its ability to perform essential functions.
#### ● Summary
Based on the intended use, technological characteristics, performance, and testing information provided in this notification. the subject device has been shown to be substantially equivalent in the areas of technical characteristics, general functionality, and indication for use to the currently marketed predicate device and does not raise any new issues of safety or effectiveness.
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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.
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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?
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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.
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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.
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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.
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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.
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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.