K171459 · Ceribell, Inc. · GXY · Aug 21, 2017 · Neurology
Device Facts
Record ID
K171459
Device Name
Ceribell Instant EEG Headband
Applicant
Ceribell, Inc.
Product Code
GXY · Neurology
Decision Date
Aug 21, 2017
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 882.1320
Device Class
Class 2
Attributes
Pediatric
Indications for Use
The Ceribell Instant EEG Headband is an electroencephalogram (EEG) electrode array intended for single patient use in the recording of EEGs in patients of 6 years and older. The Instant EEG Headband is intended for prescription use in the home, healthcare facility, or clinical research environment.
Device Story
Ceribell Instant EEG Headband is a single-use, disposable electrode array; designed exclusively for use with Ceribell Pocket EEG Device (K170363). Device consists of elastic fabric headband with 10 integrated passive Ag/AgCl electrodes; each electrode includes a reservoir of conductive electrolyte gel and scalp-contacting prongs to prepare skin. Device is applied to patient scalp by clinician or user; records EEG signals for transmission to the Pocket EEG Device. Provides EEG data for healthcare provider review; facilitates neurological monitoring in clinical or home environments. Benefits include rapid, simplified EEG setup compared to traditional electrode application.
Clinical Evidence
Bench testing only. Testing included electrode impedance, DC offset voltage, offset instability, internal noise, defibrillation overload recovery, bias current tolerance, gel delivery/skin prep, headband sizing, simulated use on mannequin heads, and packaging/shipping validation per ASTM D7386. Biocompatibility testing (cytotoxicity, irritation, sensitization) performed per ISO 10993-5 and ISO 10993-10.
Technological Characteristics
10 passive Ag/AgCl electrodes integrated on fabric substrate. Includes pre-filled conductive electrolyte gel reservoirs and scalp-contacting prongs. Single-cable connector for interface with Ceribell Pocket EEG Device. Non-sterile, disposable. Biocompatibility per ISO 10993-5/10. Electrical performance per ANSI/AAMI EC12.
Indications for Use
Indicated for EEG recording in patients 6 years and older. Intended for prescription use in home, healthcare facility, or clinical research settings.
Regulatory Classification
Identification
A cutaneous electrode is an electrode that is applied directly to a patient's skin either to record physiological signals (e.g., the electroencephalogram) or to apply electrical stimulation.
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Public Health Service
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
August 21, 2017
Ceribell, Inc. Josef Parvizi, MD, PhD Chairman 2483 Old Middlefield Wav. Suite 120 Mountain View, California 94043
Re: K171459
Trade/Device Name: Ceribell Instant EEG Headband Regulation Number: 21 CFR 882.1320 Regulation Name: Cutaneous Electrode Regulatory Class: Class II Product Code: GXY Dated: July 25, 2017 Received: July 27, 2017
Dear Dr. Parvizi:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting of medical device
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related adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Industry and Consumer Education (DICE) at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to
http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Industry and Consumer Education (DICE) at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely,
# Michael J. Hoffmann -S
for Carlos L. Peña, PhD, MS Director Division of Neurological and Physical Medicine Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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# Indications for Use
510(k) Number (if known) K171459
Device Name Ceribell Instant EEG Headband
Indications for Use (Describe)
The Ceribell Instant EEG Headband is an electroencephalogram (EEG) electrode array intended for single patient use in the recording of EEGs in patients of 6 years and older. The Instant EEG Headband is intended for prescription use in the home, healthcare facility, or clinical research environment.
| Type of Use (Select one or both, as applicable) |
|-------------------------------------------------------------------------------------------------|
| <label><input checked="" type="checkbox"/> Prescription Use (Part 21 CFR 801 Subpart D)</label> |
| <label><input type="checkbox"/> Over-The-Counter Use (21 CFR 801 Subpart C)</label> |
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# 510(K) SUMMARY
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.
# Applicant Information:
Ceribell, Inc. 2483 Old Middlefield Way Suite 120 Mountain View, California
## Contact Person:
Josef Parvizi, MD, PhD, Chairman Telephone: (650) 521-7003 E-mail: josef@ceribell.com
### Device Information:
| Trade Name: | Ceribell Instant EEG Headband |
|----------------------|--------------------------------------|
| Common Name: | Cutaneous electrode |
| Classification Name: | Cutaneous electrode (21CFR 882.1320) |
| Device Class: | II |
| Product Code: | GXY |
# Predicate Devices:
Hydrodot Statnet EEG Headpiece (K092828).
### Date Prepared:
August 17, 2017
### Device Description:
The Ceribell Instant EEG Headband is a 10 electrode EEG headband is non-sterile and disposable for single patient use and designed to be used exclusively with the Ceribell Pocket EEG Device (K170363) for EEG acquisition and recording.
The Ceribell Instant EEG Headband is comprised of the following components:
- An elastic fabric headband
- A cable attached to the headband to allow connection to an EEG acquisition/recording device
- 10 electrode assemblies, each consisting of the following: ●
- o Passive Silver/silver-chloride electrode
- o Reservoir filled with conductive electrolyte gel
- Mechanism for dispensing gel onto patient scalp O
- Scalp-contacting prongs to prepare scalp for electrode contact o
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## Indications for Use:
The Ceribell Instant EEG Headband is an electroencephalogram (EEG) electrode array intended for single patient use in the recording of EEGs in patients of 6 years and older. The Instant EEG Headband is intended for prescription use in the home, healthcare facility, or clinical research environment.
### Comparison of Intended Use and Technological Characteristics with the Predicate Devices:
The subject and the predicate device share the same intended use: an integrated array of cutaneous electrodes intended for the recording of EEG signals. The characteristics of the subject device and the predicate device are summarized in the following table.
| Attribute | Predicate Device<br>Hydrodot StatNet EEG<br>Headpiece (K092828) | Subject Device<br>Ceribell Instant EEG<br>Headband | Substantially Equivalence |
|----------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Intended Use | A single-use disposable<br>headpiece with an integrated<br>array of 17 passive<br>cutaneous electrodes that are<br>applied to the patient's head<br>to record EEG signals when<br>connected to an EEG<br>recording device. | A single-use disposable<br>headpiece with an integrated<br>array of 10 passive<br>cutaneous electrodes that are<br>applied to the patient's head<br>to record EEG signals when<br>connected to an EEG<br>recording device. | • The subject device and predicate<br>device all both intended for use as<br>single use, disposable, passive<br>cutaneous electrodes applied to the<br>patient's head to record EEG signals.<br>• The difference in number of electrodes<br>does not raise any new or different<br>questions of safety or effectiveness |
| Classification<br>Regulation | Class II per 21CFR882.1320,<br>cutaneous electrode | Class II per 21CFR882.1320,<br>cutaneous electrode | Same as predicate. |
| Product Code | GXY, Electrode, cutaneous | GXY, Electrode, cutaneous | Same as predicate. |
| Type of Patient<br>Contact | Contacts patient scalp | Contacts patient scalp | Same as predicate. |
| Type of use | Single use, non-sterile,<br>disposable. | Single use, non-sterile,<br>disposable. | Same as predicate. |
| System<br>Components,<br>Technological<br>Features, and<br>Materials | • 17 silver/silver-chloride<br>(Ag/AgCl) electrodes<br>• Foam gel reservoir<br>sponges pre-filled with<br>conductive electrolyte gel<br>• Electrodes integrated on a<br>plastic film substrate<br>• Integrated single-cable<br>connector to connect to an<br>EEG recording device | • 10 silver/silver-chloride<br>(Ag/AgCl) electrodes<br>• Packet gel reservoirs pre-<br>filled with conductive<br>electrolyte gel<br>• Electrodes integrated on a<br>fabric substrate<br>• Integrated single-cable<br>connector to connect to an<br>EEG recording device | • The technological features of the<br>subject device and predicate device<br>are substantially equivalent.<br>• Both devices include integrated pre-<br>filled containers of conductive<br>electrolyte gel.<br>• Both devices contain electrodes<br>integrated onto a substrate for<br>application onto the patient's head.<br>• Both devices include an integrated<br>single-cable connector to connect to<br>an EEG recording device.<br>• The differences in system<br>components, technological features,<br>and materials do not raise any new or<br>different questions of safety or<br>effectiveness. |
| Attribute | Predicate Device<br>Hydrodot StatNet EEG<br>Headpiece (K092828) | Subject Device<br>Ceribell Instant EEG<br>Headband | Substantially Equivalence |
| Electrodes | 17 passive Ag/AgCl<br>electrodes | 10 passive Ag/AgCl<br>electrodes | • Both the subject device and the<br>predicate device contain integrated<br>Ag/AgCl electrodes intended to be<br>applied to the patient's scalp and<br>provide coverage of both left and right<br>hemispheres of the patient's head<br>• The difference in number of electrodes<br>does not raise any new or different<br>questions of safety or effectiveness |
| Connector | Integrated single-cable<br>connector to connect to an<br>EEG recording device | Integrated single-cable<br>connector to connect to an<br>EEG recording device | Same as predicate. |
| Compatibility | Can connect to various EEG<br>devices using included<br>custom adapter cable. | Compatible with the Ceribell<br>Pocket EEG Device only. | • Both the subject device and the<br>predicate device are intended to be<br>connected to external EEG recording<br>devices.<br>• The difference in EEG recording<br>device compatibility does not raise any<br>new or different questions of safety or<br>effectiveness. |
| Available<br>Sizes and<br>Dimensions | Large (56 – 62 cm)<br>Medium (50 - 56 cm) | Small (48.4 – 53.6 cm)<br>Medium (53.3 - 56.5 cm)<br>Large (55.5 - 62 cm) | • The subject device and predicate<br>device are sized to encompass the<br>range of expected head sizes for their<br>intended patient population; and the<br>maximum head size for both devices<br>is the same.<br>• The differences in headband size<br>range do not raise any new or different<br>questions of safety or effectiveness. |
| Conductive<br>Electrolyte Gel | Electrodes are pre-filled with<br>an electrolyte gel filled<br>sponge adhered to each<br>electrode. | Conductive electrolyte gel is<br>included in a packet gel<br>reservoir integrated into each<br>electrode assembly. User is<br>also able to add additional<br>electrolyte gel when needed<br>using a syringe. | • The pre-filled conductive electrolyte<br>gel components in the subject device<br>and predicate device are substantially<br>equivalent.<br>• The differences in electrolyte gel<br>application do not raise any new or<br>different questions of safety or<br>effectiveness. |
| Bio-<br>compatibility | Biocompatibility of patient<br>contacting components<br>verified with Irritation,<br>Sensitization, and Cytotoxicity<br>testing per ISO 10993-5:2009<br>and ISO 10993-10:2010 | Biocompatibility of patient<br>contacting components<br>verified with Irritation,<br>Sensitization, and Cytotoxicity<br>testing per ISO 10993-5:2009<br>and ISO 10993-10:2010 | Same as predicate. |
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# Performance Data:
The following table summarizes test data that were provided to demonstrate safety and efficacy in support of a substantial equivalence determination. All of the performance testing described below was performed on the subject device.
| Test | Test Description | Test Results |
|---------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------|
| Electrode<br>Impedance | AC impedance of electrode pairs of<br>subject device connected gel-to-gel<br>using the test methodology and<br>acceptance criteria of ANSI/AAMI EC12<br>5.2.2.1. | All samples passed. The test results do not<br>raise any new or different questions of<br>safety or effectiveness |
| Electrode DC<br>Offset Voltage | DC offset voltage of electrode pairs of<br>subject device connected gel-to-gel<br>following a 1 min stabilization period<br>using the test methodology and<br>acceptance criteria of ANSI/AAMI EC12<br>5.2.2.2. | All samples passed. The test results do not<br>raise any new or different questions of<br>safety or effectiveness |
| Combined<br>Offset<br>Instability and<br>Internal Noise | Peak-to-peak passband voltage<br>measured between electrode pairs of<br>subject device connected gel-to-gel<br>measured for a 5 min period following a<br>1 min stabilization using the test<br>methodology and acceptance criteria of<br>ANSI/AAMI EC12 5.2.2.3 | All samples passed. The test results do not<br>raise any new or different questions of<br>safety or effectiveness |
| Defibrillation<br>Overload<br>Recovery | DC offset voltage and AC impedance of<br>electrode pairs of subject device<br>connected gel-to-gel following 4<br>simulated defibrillation discharge events<br>using the test methodology and<br>acceptance criteria of ANSI/AAMI EC12<br>5.2.2.4 | All samples passed. The test results do not<br>raise any new or different questions of<br>safety or effectiveness |
| Bias Current<br>Tolerance | DC offset voltage of electrode pairs of<br>subject device connected gel-to-gel over<br>the course of 8 hours with an applied<br>bias current of 200 nA using the test<br>methodology and acceptance criteria of<br>ANSI/AAMI EC12 5.2.2.5. | All samples passed. The test results do not<br>raise any new or different questions of<br>safety or effectiveness |
| Conductive Gel<br>Delivery/Skin<br>Prep Testing | Subject devices are functionally tested<br>to verify that integrated conductive gel<br>can be dispensed, additional gel can be<br>added by the user, and aluminum oxide<br>powder is present on the scalp<br>contacting surfaces. | All samples passed. The test results do not<br>raise any new or different questions of<br>safety or effectiveness |
| Headband Size<br>Range Testing | Headband size ranges of subject<br>devices measured with calibrated ruler. | All samples passed. The test results do not<br>raise any new or different questions of<br>safety or effectiveness |
| Simulated Use<br>Testing | Small, medium, and large size subject<br>devices tested under simulated use<br>conditions using mannequin heads with<br>long hair. | All samples passed. The test results do not<br>raise any new or different questions of<br>safety or effectiveness |
| Test | Test Description | Test Results |
| Packaging<br>Performance<br>Testing | Subject devices packaging subjected to<br>environmental conditioning and shipping<br>test per ASTM D7386. After<br>environmental conditioning and<br>shipping, devices were visually<br>inspected, functionally tested under<br>simulated use conditions, and<br>electrically tested. | All samples passed. The test results do not<br>raise any new or different questions of<br>safety or effectiveness |
| Biocompatibility<br>Testing | Patient contacting materials used in<br>subject device subjected to<br>biocompatibility testing for devices that<br>contact surface/intact skin for limited<br>duration (< 24 hours). Cytotoxicity<br>testing conducted per ISO 10993-5;<br>Irritation and Sensitization testing<br>conducted per ISO 10993-10. | All samples passed. The test results do not<br>raise any new or different questions of<br>safety or effectiveness |
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## Summary:
The Ceribell Instant EEG Headband has the same intended use as the predicate device. In addition, it has similar technological characteristics; performance data demonstrates that any differences in technological characteristics do not raise different questions of safety or effectiveness. Therefore, the Ceribell Instant EEG Headband is substantially equivalent to the cleared predicate device.
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.