K222569 · Guilin Woodpecker Medical Instrument Co., Ltd. · EHD · Nov 23, 2022 · Dental
Device Facts
Record ID
K222569
Device Name
Ai Ray Dental X-Ray Device
Applicant
Guilin Woodpecker Medical Instrument Co., Ltd.
Product Code
EHD · Dental
Decision Date
Nov 23, 2022
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 872.1800
Device Class
Class 2
Attributes
Pediatric
Indications for Use
Ai Ray Dental X-Ray Device is an extraoral diagnostic dental X-ray source to produce X-ray images using intraoral image receptors. It is indicated for use by a dental technician for both adult and pediatric patients.
Device Story
Portable, handheld dental X-ray source; supercapacitor-operated; rechargeable 10.8V DC Li-ion polymer battery. Used in dental offices, orthodontic offices, and hospital wards by dentists or dental technicians. Emits X-rays by supplying high voltage to an X-ray tube, freeing electrons from cathode to strike anode. Produces diagnostic quality X-ray images using intraoral film or digital receptors. Features jog dial for mode selection, preset exposure times based on patient size/tooth type, and Pb-filled acrylic backscatter shield. Output assists clinicians in diagnosing diseases of teeth, jaw, and oral structures. Benefits include mobility for environments where traditional X-ray systems are impractical.
Clinical Evidence
No clinical data was required to demonstrate substantial equivalence. Bench testing only.
Indicated for use by dental technicians for adult and pediatric patients to produce diagnostic dental radiographs of teeth, jaw, and oral structures using intraoral image receptors.
Regulatory Classification
Identification
An extraoral source x-ray system is an AC-powered device that produces x-rays and is intended for dental radiographic examination and diagnosis of diseases of the teeth, jaw, and oral structures. The x-ray source (a tube) is located outside the mouth. This generic type of device may include patient and equipment supports and component parts.
{0}------------------------------------------------
Image /page/0/Picture/0 description: The image contains two logos. The logo on the left is the Department of Health & Human Services logo. The logo on the right is the FDA logo, which stands for U.S. Food & Drug Administration. The FDA logo is in blue.
November 23, 2022
Guilin Woodpecker Medical Instrument Co., Ltd. % Charles Mack Principal Engineer IRC 2950 E Lindrick Drive CHANDLER, AZ 85249
Re: K222569
Trade/Device Name: Ai Ray Dental X-Ray Device Regulation Number: 21 CFR 872.1800 Regulation Name: Extraoral Source X-Ray System Regulatory Class: Class II Product Code: EHD Dated: August 24, 2022 Received: August 24, 2022
Dear Charles Mack:
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
{1}------------------------------------------------
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 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 medical devices and radiation-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,
2022.11.23
*Lu Jiang* 09:33:38 -05'00'
Lu Jiang, Ph.D. Assistant Director Diagnostic X-Ray Systems Team DHT8B: Division of Radiological Imaging Devices and Electronic Products OHT8: Office of Radiological Health Office of Product Evaluation and Quality Center for Devices and Radiological Health
Enclosure
{2}------------------------------------------------
## Indications for Use
510(k) Number (if known) K222569
Device Name Ai Ray Dental X-Ray Device
Indications for Use (Describe)
Ai Ray Dental X-Ray Device is an extraoral diagnostic dental X-ray source to produce X-ray images using intraoral image receptors. It is indicated for use by a dental technician for both adult and pediatric patients.
| Type of Use (Select one or both, as applicable) |
|------------------------------------------------------------------------------------------------------------------------------|
| <span style="font-size: 10pt;"> <input checked="true" type="checkbox"/> Remediation Use (Part 21 CFR 221 Subpart B) </span> |
| <span style="font-size: 10pt;"> <input type="checkbox"/> Source Term Control Use (21 CFR 1271 Subpart D) </span> |
X Prescription Use (Part 21 CFR 801 Subpart D)
| | Over-The-Counter Use (21 CFR 801 Subpart C)
#### CONTINUE ON A SEPARATE PAGE IF NEEDED.
This section applies only to requirements of the Paperwork Reduction Act of 1995.
#### *DO NOT SEND YOUR COMPLETED FORM TO THE PRA STAFF EMAIL ADDRESS BELOW.*
The burden time for this collection of information is estimated to average 79 hours per response, including the time to review instructions, search existing data sources, gather and maintain the data needed and complete and review the collection of information. Send comments regarding this burden estimate or any other aspect of this information collection, including suggestions for reducing this burden, to:
> Department of Health and Human Services Food and Drug Administration Office of Chief Information Officer Paperwork Reduction Act (PRA) Staff PRAStaff(@fda.hhs.gov
"An agency may not conduct or sponsor, and a person is not required to respond to, a collection of information unless it displays a currently valid OMB number."
{3}------------------------------------------------
| K22269 | 510(k) SUMMARY |
|----------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Preparation Date: | November 21, 2022 |
| Manufacturer's Name and Address: | Guilin Woodpecker Medical Instrument<br>Co Ltd<br>Information Industrial Park, Guilin<br>National High-Tech Zone, Guilin City,<br>Guangxi Province, China 541004 |
| Corresponding Official: | Charles Mack |
| Telephone Number: | 931-625-4938 |
| Email Address: | charliemack@irc-us.com |
| Trade Name: | Ai Ray Dental X-Ray Device |
| Common Name(s): | unit, x-ray, extraoral with timer, |
| Regulation Name(s): | Extraoral source x-ray system |
| Regulation Number(s): | 21CFR872.1800 |
| Product Code: | EHD |
| Device Class: | Class II |
| Predicate Device: | Vatech Co., Ltd K200182 |
| Trade Name: | EzRay Air Portable (Model: VEX-P300) |
| Common Name(s): | unit, x-ray, extraoral with timer, |
| Regulation Name(s): | Extraoral source x-ray system |
| Regulation Number(s): | 21CFR872.1800 |
| Product Code: | EHD |
| Device Class: | Class II |
{4}------------------------------------------------
#### Device Description:
Ai Ray Dental X-Ray Device is a super capacitor-operated, portable dental X-ray source designed for handheld operation. It is designed to produce diagnostic quality X-rays images utilizing either film or digital imaging techniques. The Portable Dental X-ray Device is designed for use in a dental office. It can also be used in other similar environments (orthodontic office, general practitioner's office, hospital ward, etc.) where appropriate safeguards are implemented. The device uses a rechargeable supercapacitor to allow for the use of the Portable Dental X-ray Device where transportation or use of other x-ray devices might be prohibitive due to the other device's size and/or lack of mobility.
The proposed Ai Ray Dental X-Ray Device is similar in design to the predicate EzRay Air Portable, VEX-P300 (K200182). The proposed Ai Ray Device and the predicates is a portable dental X-ray system intended for use by a trained and qualified dentist or dental technician for both adult and pediatric subjects for producing diagnostic dental radiographs for treatment of diseases of the teeth, jaw, and other oral structures using intra-oral image receptors.
The differences between the proposed Ai Ray Dental X-Ray Device and the predicate EzRay Air Portable, VEX-P300 (K200182) are as follows:
1. The opening key is positioned differently, EzRay Air Portable at the bottom and Ai Ray at the top.
2. The structural shapes of the two devices are different.
#### Principles of Operation
The equipment acquires images by emitting X-rays continuously on a human tooth. X-rays are emitted when high voltage is supplied to the X-ray tube assembly, which frees electrons from the cathode. They hit the anode to produce X-rays.
{5}------------------------------------------------
| Characteristics | Subject Device | Predicate Device | Discussion |
|----------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------|
| Device | Ai Ray Dental X-Ray Device | EzRay Air Portable (Model: VEX-P300) | - |
| 510K Applicant | Guilin Woodpecker Medical Instrument Co., Ltd. | Vatech Co., Ltd | - |
| 510(K) Number Regulation Number | Pending<br>CFR872.1800 | K200182<br>CFR872.1800 | Identical |
| Product Code | EHD | EHD | Identical |
| Classification Name | Extraoral source x-ray system | Extraoral source x-ray system | Identical |
| OTC or Prescription | Prescription Use | Prescription Use | Identical |
| Medical Specialty | Dental | Dental | Identical |
| Indication for Use | Ai Ray Dental X-Ray Device is an extraoral diagnostic dental X-ray source to produce X-ray images using intraoral image receptors. It is indicated for use by a dentist or a dental technician for both adult and pediatric patients. | EzRay Air Portable (Model: VEX-P300) is an extraoral diagnostic dental X-ray source to produce X-ray images using intraoral image receptors. It is indicated for use by a dentist or a dental technician for both adult and pediatric patients. | Identical |
| Principle of Use | X-ray tube | X-ray tube | Identical |
| Mechanical | | | |
| Size (L x W x H) | $114mm×363.8mm×2$<br>45.6mm | 280 x 165 x 296 mm | Different. Note 1 |
| Source to Skin Distance | 200~230mm | 200 mm | Different. Note 2 |
| X-ray Field Size | Ф5.6cm±0.1cm | 6cm round | Different. Note 3 |
| Mechanical | | | |
| Characteristics | Subject Device | Predicate Device | Discussion |
| User Interface | Jog dial for operating mode selection. Additionally, several user-selectable preset times with patient size and tooth selection icons on a display module. | Jog dial for operating mode selection. Additionally, several user-selectable preset times with patient size and tooth selection icons on a display module. | Identical |
| Backscatter Radiation Protection | 162 mm dia., Pb-filled acrylic plastic, Back Scattering shield | 165 mm dia., Pb-filled acrylic plastic, Back Scattering shield | Different. Note 4 |
| Exposure Switch | Exposure button on the handset | Exposure button on the handset | Identical |
| Tube Head Mounting | Handheld | Handheld | Identical |
| Electrical | | | |
| Energy Source | Rechargeable 10.8V DC Li-ion polymer battery pack (Nominal Capacity: 2450~2500mAh ) | Rechargeable 21.6 V DC Li-ion polymer battery pack (Nominal Capacity: 2,500 mAh) | Different. Note 5 |
| Exposure Time | 0.04-1.0 seconds in 0.01 increments | 0.05 - 1.0 seconds in 0.01 increments | Different. Note 6 |
| Tube Current (mA) | 3 mA fixed, error±20% | 2.5 mA fixed | Different. Note 7 |
| Tube Voltage (kVp) | 70 kV fixed, error±10% | 60 or 65 kV fixed | Different. Note 8 |
| Waveform | Constant Potential (DC) | Constant Potential (DC) | Identical |
| Applied Standard | IEC 60601-1, IEC 60601-1-3, IEC 60601-2-65, IEC 60601-1-2, 21 CFR 1020.30, 1020.31 | IEC 60601-1, IEC 60601-1-3, IEC 60601-2-65, IEC 60601-1-2, 21 CFR1020.30, 1020.31 | Identical |
# Comparison of Technological Characteristics with the Predicate Device
{6}------------------------------------------------
{7}------------------------------------------------
#### Differences Discussion:
Note1 The physical shape/size difference has no impact on safety and performance. Both devices conform to the same safety and performance standards.
Note 2 The distance difference has no impact on safety and performance. Both devices conform to the same safety and performance standards.
Note 3 The difference has no impact on safety and performance. Both devices conform to the same safety and performance standards.
Note 4 The size of the backscattering shield is different due to different device shapes. The radiation leakage value of the device with a backscattering shield after testing meets the requirements of the FDA. Security and performance are not affected.
Note 5 Although the battery specifications are different, they conform to the same requirement of IEC 62133 for the rechargeable battery. The differences do not raise issues of safety and effectiveness.
Note 6 Both devices conform to the same requirement of federal standard requirements. The performance test demonstrated that the difference doesn't raise safety and effectiveness issues.
Note 7 Although the X-ray tube's specifications are not identical and conform to the same performance standards IEC 60601-2-65, The performance test demonstrated the difference doesn't raise safety and effectiveness issues.
Note 8 Although the X-ray tube's specifications are not identical, and they conform to the same performance standards IEC 60601-2-65. The performance test demonstrated that the difference doesn't raise safety and effectiveness issues.
{8}------------------------------------------------
## Performance Testing
Performance testing was provided to support the substantial equivalence determination and to validate and verify that the Ai Ray Dental X-Ray Device met all requirements of related applicable standards. The results of these tests demonstrate compliance with the requirements of the consensus standards noted below.
## Non-Clinical Performance Testing
Non-clinical performance testing was performed to verify substantial equivalence to predicate devices.
### Safety and EMC:
- ANSI AAMI ES60601-1:2005 Medical electrical equipment Part 1: General । requirements for basic safety and essential performance (IEC 60601-1:2005, MOD)
- IEC 60601-1-2 Edition 4.1 2020-09 CONSOLIDATED VERSION Medical electrical equipment - Part 1-2: General requirements for basic safety and essential performance - Collateral Standard: Electromagnetic disturbances -Requirements and tests
#### Performance:
- IEC 60601-1-3 Edition 2.1 2013-04 Medical electrical equipment Part 1-3: । General requirements for basic safety and essential performance - Collateral Standard: Radiation protection in diagnostic X-ray equipment
- IEC 60601-1-6 Edition 3.1 2013-10 Medical electrical equipment Part 1-6: -General requirements for basic safety and essential performance - Collateral standard
- IEC 60601-2-65 Edition 1.1 2021-05 CONSOLIDATED VERSION Medical electrical equipment - Part 2-65: Particular requirements for the basic safety and essential performance of dental intra-oral-X-ray equipment
- IEC 61223-3-4 First edition 2000-03 Evaluation and routine testing in medical imaging departments - Part 3-4: Acceptance tests - Imaging performance of dental X-ray
- IEC 62304:2006/A1:2015 "Medical device software Software life cycle processes."
{9}------------------------------------------------
- IEC 62366-1 Edition 1.0 2015-02 Medical devices Part 1: Application of usability engineering to medical devices [Including CORRIGENDUM 1 (2016)]
- FDA Guidance for the Content of Premarket Submissions for Software -Contained in Medical Devices
- FDA Guidance for Radiation Safety Considerations for X-Ray Equipment -Designed for Handheld Use
- FDA Guidance: "Pediatric Information for X-ray Imaging Device Premarket -Notifications," dated November 28, 2017
- 21 CFR 1020.30 Diagnostic x-ray system and their major components -
- Content of Premarket Submissions for Management of Cybersecurity in -Medical Devices
### Clinical Performance Data
No clinical data was required to demonstrate substantial equivalence.
## Conclusions:
The differences between the predicate and the subject device do not raise any new or different questions of safety or effectiveness. The Ai Ray Dental X-Ray Device is substantially equivalent to the Vatech Co., Ltd, Inc. EzRay Air Portable (Model: VEX-P300) cleared under K200182 with respect to the indications for use, target populations, treatment method, and technological characteristics.
-END-
Predicate graph will load when search results are available.
Embedding visualization will load when search results are available.
PDF viewer will load when search results are available.
Loading panels...
Select an item from Submissions
Click any panel, subpart, regulation, product code, or device to see details here.
Section Matches
Results will appear here.
Product Code Matches
Results will appear here.
Special Control Matches
Results will appear here.
Loading collections...
Loading
My Alerts
You will receive email notifications based on the filters and frequency you set for each alert.
Sort by:
Create Alert
Search Filters
Agent Token
Create a read-only bearer token for Claude, ChatGPT, or other agents that can call HTTP APIs.
Copy this now. It will not be shown again.
Connected apps
Apps you authorized through browser sign-in. Disconnecting revokes their access immediately.
Learn the FDA Browser
Two short videos show you everything — or skip straight to the written tutorial if you'd rather read. You can reopen this any time from the Tutorial button in the top bar.
Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
Where do you find a device's intended use without opening the PDF?
Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
6. Collections
With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
8. Chart view
Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.