CerebralGo Plus 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 standard "off-the-shelf" hardware and can be used for image viewing and processing. Data and images are acquired through DICOM compliant imaging devices. CerebralGo Plus provides viewing and processing capabilities for imaging datasets acquired with adult's CTA (CT Angiography). CerebralGo Plus is not intended for primary diagnostic use.
Device Story
CerebralGo Plus is a software-only medical image management and processing system. It receives DICOM-compliant CTA imaging data from hospital networks (PACS, CT scanners). The software processes these images to visualize large vessels in the head and neck. It operates on standard off-the-shelf hardware within a clinical/hospital environment. Trained clinicians use the software to view and manipulate images, which may assist in clinical decision-making. The device does not perform primary diagnosis. It facilitates workflow by providing automated image processing capabilities, potentially improving the efficiency of vessel visualization for clinicians.
Clinical Evidence
Bench testing only. Performance validated using 141 US-collected CTA images across diverse demographics (age, gender, ethnicity) and equipment (GE, Siemens, Philips, Toshiba). Reference standard established by 3 radiologists. Results: Dice coefficient 0.942, 95% Hausdorff Distance 3.692. Subgroup analysis performed for equipment, gender, and age. No clinical performance data used for substantial equivalence determination.
Technological Characteristics
Software-only medical image management and processing system. Runs on standard off-the-shelf physical/virtual servers. DICOM-compliant. Connectivity via hospital network/PACS. No energy delivered to patients. Algorithm verification performed on US datasets.
Indications for Use
Indicated for use by trained professionals (physicians, medical technicians) for viewing and processing adult CT Angiography (CTA) imaging datasets. Not intended for primary diagnostic use.
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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Image /page/0/Picture/0 description: The image shows the logo of the U.S. Food and Drug Administration (FDA). The logo consists of two parts: the Department of Health & Human Services logo on the left and the FDA logo on the right. The FDA logo is in blue and includes the letters "FDA" followed by the words "U.S. Food & Drug Administration" in a larger font and the word "Administration" in a smaller font.
Yukun (Beijing) Technology Co., Ltd. % Wang Qi Regulatory Affairs Manager Room 313/315, Building 3, No.11 Chuangxin Road, Science Park Beijing, Beijing 102200 CHINA
Re: K213986
April 13, 2023
Trade/Device Name: CerebralGo Plus Regulation Number: 21 CFR 892.2050 Regulation Name: Medical image management and processing system Regulatory Class: Class II Product Code: QIH, LLZ Dated: March 12, 2023 Received: March 13, 2023
Dear Wang Qi:
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 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
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devices or postmarketing safety reporting (21 CFR 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 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 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, Ph.D. Assistant Director Imaging Software Team DHT 8B: Division of Radiological Imaging Devices and Electronic Products OHT 8: Office of Radiological Health Office of Product Evaluation and Quality Center for Devices and Radiological Health
Enclosure
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# Indications for Use
510(k) Number (if known) K213986
Device Name CerebralGo Plus
#### Indications for Use (Describe)
CerebralGo Plus 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 standard "off-the-shel" hardware and can be used for image viewing and processing. Data and images are acquired through DICOM compliant imaging devices.
CerebralGo Plus provides viewing and processing capabilities for imaging datasets acquired with adult's CTA (CT Angiography).
CerebralGo Plus is not intended for primary diagnostic 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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Image /page/3/Picture/0 description: The image contains a logo and a number. The logo is a stylized letter 'M' composed of overlapping lines in shades of blue and purple. To the right of the logo is the number 'K213986' in a clear, sans-serif font. The number is likely an identification or tracking code.
This 510(k) summary of safety and effectiveness is being submitted in accordance with the requirements of 21 CFR 807.92.
| A. SUBMITTER | Yukun (Beijing) Technology Co., Ltd<br>Room 313/315, Building 3, No.11 Chuangxin Road,<br>Science Park, Chuangxin Road, Science Park, Changping<br>District, Beijing, China 102200<br>Phone: +86 10-8973-5152 | |
|----------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--|
| Contact Person: | Wang Qi, Regulatory Affairs Manager<br>Email: wangqi@shukun.net<br>Contact Phone: +86 10-89735152 | |
| Date Summary Prepared: | Mar. 21, 2023 | |
| B. DEVICE | | |
| Trade or Proprietary Name: | CerebralGo Plus | |
| Version: | 1.0 | |
| Common Name: | Picture Archiving and Communications System | |
| Regulation Name: | Medical Image Management and Processing System | |
| Regulation Number: | 21 CFR 892.2050 | |
| Regulatory Class: | Class II | |
| Product Code: | QIH, LLZ | |
### C. LEGALLY MARKETED PREDICATE DEVICE
| 510(k) Number | Product Code | Trade Name | Manufacturer |
|---------------|--------------|----------------------|-------------------|
| K192692 | LLZ | Brainomix 360° e-CTA | Brainomix Limited |
This predicate device has not been subject to a design-related recall.
There are no reference devices in this submission.
#### D. DEVICE DESCRIPTION
CerebralGo Plus is a medical image management and processing software package to be used by trained professionals, including, but not limited to physicians and medical technicians.
The software runs on standard "off-the-shelf" hardware and can be used for image viewing, and processing images of DICOM compliant CTA imaging which, when interpreted by a trained clinician, may yield information useful in clinical decision making.
CerebralGo Plus system provides a wide range of basic image viewing, processing, and manipulation functions, through multiple output formats. The software is used to visualize large vessels from head and neck CTA imaging.
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Image /page/4/Picture/0 description: The image shows a logo with an abstract design. The logo features a stylized letter "M" composed of several overlapping geometric shapes in shades of pink, purple, and blue. To the right of the "M" is a small, solid blue circle, which serves as a visual anchor and balances the composition.
CerebralGo Plus can connect with other DICOM-compliant devices (e.g., Picture Archiving and Communication System (PACS), Workstations, CT Scanners) to receive CTA scans. After processing, results and images can be sent to a PACS via DICOM transfer and can be viewed on a PACS workstation or via a web user interface contained and accessed within a hospital network and firewall.
Algorithm training of CerebralGo Plus has been conducted on images collected from China as training dataset. Algorithm verification has been conducted on US images.
### E. INDICATIONS FOR USE
The proposed indications for use for CerebralGo Plus are as follows:
CerebralGo Plus 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 standard "off-the-shelf" hardware and can be used for image viewing, and processing. Data and images are acquired through DICOM compliant imaging devices.
CerebralGo Plus provides viewing and processing capabilities for imaging datasets acquired with adult's CTA (CT Angiography).
CerebralGo Plus is not intended for primary diagnostic use.
#### F. COMPARISON OF TECHNOLOGICAL CHARACTERISTICS WITH THE PREDICATE DEVICE
The technological design features of CerebralGo Plus have been compared to the predicate in intended use, indications for use, design, function, and technology and it is demonstrated that they are substantially equivalent.
| | Table 2 Technological Characteristics Comparison Table | |
|----------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Characteristics | Predicate Device | Subject Device |
| | Brainomix 360° e-CTA<br>(K192692) | CerebralGo Plus<br>(K213986) |
| | Brainomix Limited | Yukun (Beijing) Technology Co.,<br>Ltd |
| Regulatory Class | Class II | Class II |
| Product Code | LLZ | QIH, LLZ |
| Regulation | 21 CFR 892.2050 | 21 CFR 892.2050 |
| Device Description | Brainomix 360° e-CTA is a<br>software package that provides<br>for the study of changes of<br>tissue in digital images<br>captured by CT. Brainomix<br>360° e-CTA provides viewing<br>and quantification for CTA<br>images. | CerebralGo Plus is a software<br>package that provides for the<br>visualization digital images<br>capture by<br>CTA. |
| Intended<br>Use/Indications for<br>Use | Brainomix 360° e-CTA is an<br>image processing software<br>package to be used by trained<br>professionals, including, but<br>not<br>limited to physicians and<br>medical technicians. The<br>software runs on standard "off-<br>the-shelf" hardware (physical<br>or virtualized) and can be used<br>to perform image viewing,<br>processing and analysis of<br>images. Data and images are<br>acquired through DICOM<br>compliant imaging devices.<br>Brainomix 360° e-CTA<br>provides viewing and analysis<br>capabilities for imaging<br>datasets acquired with CTA<br>(CT Angiography).<br>Brainomix 360° e-CTA is not<br>intended for mobile diagnostic<br>use. | CerebralGo Plus is an image<br>processing software package to be<br>used by trained professionals,<br>including, but not limited to<br>physicians<br>and<br>medical<br>technicians. The software runs on<br>standard "off-the-shelf" hardware<br>and can be used for image<br>viewing and processing. Data and<br>images are acquired through<br>compliant<br>DICOM<br>imaging<br>devices.<br>CerebralGo<br>Plus<br>provides<br>processing<br>and<br>viewing<br>capabilities for imaging datasets<br>acquired with adult's CTA (CT<br>Angiography).<br>CerebralGo Plus is not intended<br>for primary diagnostic use. |
| Environment of Use | Clinical/Hospital Environment | Clinical/Hospital Environment |
| Energy used an/or<br>delivered | None—software only<br>application. The software<br>application does not deliver or<br>depend on energy delivered to<br>or from patients | None—software only<br>application. The software<br>application does not deliver or<br>depend on energy delivered to or<br>from patients |
| End User | Trained clinicians | Trained clinicians |
Table 2 Technological Characteristics Comparison Table
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Image /page/5/Picture/0 description: The image shows a stylized logo with an abstract design. The logo features a series of connected shapes in varying shades of purple, blue, and teal. The shapes are arranged to resemble a stylized letter 'M' or a mountain range, with a small dot to the right of the main structure.
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Image /page/6/Picture/0 description: The image shows a logo with two stylized, connected shapes that resemble the letter 'M'. The shapes are formed by rounded, parallel lines in a gradient of colors, transitioning from pink and purple on the left to blue and teal on the right. A small, solid teal circle is positioned to the right of the shapes, adding a subtle accent to the overall design. The logo has a modern and abstract appearance.
| Supported Modalities<br>for image processing<br>and visualization | CTA | CTA |
|-------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------|
| PACS Functionality | View process and analyze<br>medical images. Performs<br>standard PACS functions with<br>respect to querying and listing | View process and analyze<br>medical images. Performs<br>standard PACS functions with<br>respect to querying and listing |
| DICOM Compliance | Yes | Yes |
| Computer Platform | Standard Physical and Virtual<br>off-the shelf Server | Standard off-the shelf server |
| Data Acquisition | Acquires medical image data<br>from DICOM compliant<br>imaging devices and<br>modalities | Acquires medical image data<br>from DICOM compliant imaging<br>devices and modalities |
| CTA modality | CTA large vessel | CTA large vessel |
| Performance Data | Stand-alone software<br>performance testing | Stand-alone software<br>performance testing |
## G. PERFORMANCE DATA
The results of software performance testing demonstrate that CerebralGo Plus has met all design requirements and specifications associated with the intended use of the software. All testing has been carried out in compliance with the requirements of 21 CFR 820 and in adherence to the DICOM standard.
Regarding the validation of the algorithm, the test data was used independently from training dataset.
The algorithm testing of CerebralGo Plus has been performed using 141 images collected from US, which covered different gender, age, ethnicity, equipment and CT protocol used to collect images. The information of demographic and equipment distribution was as follows:
| Demographic information | | Quantity |
|-------------------------|--------|----------|
| Gender | Male | 68 |
| | Female | 73 |
| Age | <40 | 6 |
| | 40~70 | 58 |
| | >70 | 54 |
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Image /page/7/Picture/0 description: The image shows a logo with a stylized letter 'M' formed by overlapping geometric shapes in shades of purple, blue, and teal. The shapes create a sense of depth and movement, with the colors blending together to form a gradient effect. A small teal circle is positioned to the right of the 'M', possibly serving as a period or a design element to balance the composition.
| | Unknown | 23 |
|-----------------------|---------------------------|----------|
| Ethnicity | Black or African American | 1 |
| | Hispanic/Latino | 2 |
| | Non-Hispanic/Latino | 82 |
| | White | 5 |
| | Unknown | 51 |
| Equipment information | | Quantity |
| Equipment information | | Quantity |
|-----------------------|---------|----------|
| Equipment | GE | 4 |
| | Siemens | 6 |
| | Philips | 101 |
| | Toshiba | 30 |
The reference standard of 141 images was created by 3 radiologists from US. When the two radiologists conflicted, the third radiologist would arbitrate and generate the reference standard. The results output by algorithm were compared with the reference standard, the value of Dice coefficient was 0.942, the value of 95% Hausdorff Distance was 3.692. The subgroups analysis was conducted based on scanning equipment, gender and age, and the results were shown in the table below:
| Parameter | Dice | HD95 | |
|-----------|---------|-------|--------|
| Equipment | TOSHIBA | 0.936 | 3.979 |
| | Philips | 0.945 | 3.494 |
| | SIEMENS | 0.942 | 1.328 |
| | GE | 0.924 | 10.098 |
| Gender | Female | 0.941 | 3.702 |
| | Male | 0.944 | 3.682 |
| Age | <40 | 0.955 | 1.000 |
| | 40-70 | 0.946 | 2.426 |
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Image /page/8/Picture/0 description: The image shows a logo with a stylized letter 'M'. The 'M' is formed by three overlapping shapes in shades of blue, purple, and pink, creating a gradient effect. To the right of the 'M' is a small, solid blue circle, which appears to be a dot. The logo has a modern and abstract design.
| | >=70 | 0.940 | 4.846 |
|--|------|-------|-------|
|--|------|-------|-------|
### Clinical Information
Not applicable; determination of substantial equivalence is not based on assessment of clinical performance data.
# H. CONCLUSION
Based upon the information provided in this 510(k) submission, it has been determined that the subject device is substantially equivalent to the predicate device in regards to indications for use, intended use, design, technology, and performance.
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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.
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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?
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.