AVIVO MOBILE PATIENT MANAGEMENT SYSTEM, NUVANT MOBILE CARDIAC TELEMETRY (MCT) SYSTEM
K091971 · Corventis, Inc. · DSI · Aug 27, 2009 · Cardiovascular
Device Facts
Record ID
K091971
Device Name
AVIVO MOBILE PATIENT MANAGEMENT SYSTEM, NUVANT MOBILE CARDIAC TELEMETRY (MCT) SYSTEM
Applicant
Corventis, Inc.
Product Code
DSI · Cardiovascular
Decision Date
Aug 27, 2009
Decision
SESE
Submission Type
Special
Regulation
21 CFR 870.1025
Device Class
Class 2
Indications for Use
The AVIVO™ Mobile Patient Management System is intended to continuously record, store, and periodically transmit physiological data. The System is indicated for those patients who require monitoring for the detection of non-lethal cardiac arrhythmias. The AVIVO Mobile Patient Management System also monitors, derives and displays: ECG; Heart Rate (including HR variability); Activity; Posture; Body Temperature; Respiration rate (including RR variability); Body fluid status. The NUVANT™ Mobile Cardiac Telemetry (NUVANT) System is intended to continuously measure, record, and periodically transmit physiological data. The System is indicated for those patients who require monitoring for the detection of non-lethal cardiac arrhythmias. The NUVANT system model monitors, derives and displays: ECG; Heart rate. The Systems may also monitor, derive and display: Activity; Posture; Body temperature; Respiration rate (including RR Variability); Body fluid status; Heart rate variability.
Device Story
System consists of PiiX (adherent patient-worn device), zLink (gateway), and secure server. PiiX contains ECG electrodes, impedance sensor (respiration/fluid), and accelerometer (activity/posture). NUVANT includes patient trigger magnet for manual symptom-based ECG capture. PiiX uses heart rate, timing, and morphology-based algorithm to detect arrhythmias, discriminate waveforms, count ectopic beats (PVCs/PACs), and calculate atrial fibrillation burden. Data transmitted via Bluetooth to zLink, then via cellular to server. Healthcare professionals access data via standard browsers to view trend graphs, ECG waveforms, and notifications. Enables remote monitoring and clinical decision-making for arrhythmia management.
Clinical Evidence
Bench testing only. No clinical data provided. Substantial equivalence based on descriptive information and design verification tests confirming the modified algorithm performs as intended.
Technological Characteristics
System components: PiiX (adherent device), zLink (gateway), server, and optional patient trigger magnet. Sensors: ECG electrodes, impedance sensor, accelerometer. Connectivity: Bluetooth (PiiX to zLink), cellular (zLink to server). Software: Heart rate, timing, and morphology-based arrhythmia detection algorithm.
Indications for Use
Indicated for patients requiring monitoring for the detection of non-lethal cardiac arrhythmias.
Regulatory Classification
Identification
The arrhythmia detector and alarm device monitors an electrocardiogram and is designed to produce a visible or audible signal or alarm when atrial or ventricular arrhythmia, such as premature contraction or ventricular fibrillation, occurs.
Special Controls
*Classification.* Class II (special controls). The guidance document entitled “Class II Special Controls Guidance Document: Arrhythmia Detector and Alarm” will serve as the special control. See § 870.1 for the availability of this guidance document.
CardioNet ECG Monitor with Arrhythmia Detection Model CN1005 (K072558)
Submission Summary (Full Text)
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AUG 2 7 2009
| | | 510(k) Summary of Safety & Effectiveness |
|--|--|------------------------------------------|
| | | |
Date: June 29, 2009
| Submitter Name & Address: | Corventis, Inc.<br>2033 Gateway Place Suite 100<br>San Jose, CA 95110 |
|---------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Contact Person: | Madhuri Bhat, VP, Clinical & Regulatory Affairs<br>408-790-9306 (phone)<br>408-790-9350 (fax) |
| Trade/Proprietary Name: | AVIVO™ Mobile Patient Management System<br>NUVANT™ Mobile Cardiac Telemetry System |
| Common/Usual Name: | Mobile Patient Management System<br>Mobile Cardiac Telemetry System |
| Classification Name: | Arrhythmia Detector and Alarm<br>(21 CFR 870.1025, Product Code DSI)<br>Patient Physiological Monitor (with arrhythmia<br>detection)<br>(21 CFR 870.1025, Product Code MHX) |
| Class: | Class II, Special Controls |
| 510(k): | Special 510(k): Device Modification |
## Predicate Devices:
- l . AVIVO Mobile Patient Management System, Corventis, Inc., cleared by FDA under 510(k) number K083287; 21 CFR 870.1025. DSI "Arrhythmja Detector and Alarm", and 21 CFR 870.1025, MHX "Patient Physiological Monitor (with arrhythmia detection)"
- 2. NUVANT Mobile Cardiac Telemetry System, Corventis, Inc. cleared by FDA under 510(k) number K090606; 21 CFR 870.1025, DSI "Arrhythmia Detector and Alarm", and 21 CFR 870.1025, MHX "Patient Physiological Monitor (with arrhythmia detection)"
- 3. Heartrak Smart AF, Universal Medical Incorporated, cleared by FDA under K071130; 21 CFR 870.0290, DXH "Telephone Electrocardiograph Transmitter and Receiver"
- 4. CardioNet ECG Monitor with Arrhythmia Detection Model CN1005, CardioNet Inc., cleared by FDA under K072558; 21 CFR 870.1025, DSI "Arrhythmia Detector and Alarm"
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K091971
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# 510(k) Summary of Safety & Effectiveness
# 1. BACKGROUND INFORMATION
The following two models are the subject devices of this Special 510(k):
- The AVIVO™ Mobile Patient Management System (hereafter referred to as . "subject AVIVO")
- The NUVANT™ Mobile Cardiac Telemetry System (hereafter referred to as . "subject NUVANT")
The subject AVIVO is a modification of the AVIVO Mobile Patient Management System cleared by the FDA under K083287 (hereafter referred to as "predicate A VIVO); whereas the NUVANT is a modification of the NUVANT Mobile Cardiac Telemetry System cleared by the FDA under K090696 (hereafter referred to as "predicate NUVANT"). The predicate AVIVO and the predicate NUVANT are intended for the monitoring of ECG and other vital parameters, in which ECG is collected when the heart rate based algorithm embedded in the device detects an abnormal heart rate, i.e. a heart rate that goes beyond a non-user adjustable predetermined threshold.
The modification made to the subject AVIVO and NUVANT permits the devices to collect ECGs based on morphology / timing of the wave form in addition to the rate. This modification enables the subject devices to discriminate waveforms based on morphology and also count ectopic beats (such as PVCs and PACs) and calculate atrial fibrillation burden of the patient.
The intent of the subject devices remains the same as that of the predicate devices, which is to monitor ECG and other vital parameters. No change has been made to the Indication for Use Statements.
# 2. INDICATION FOR USE STATEMENT
#### a. AVIVO
The AVIVO™ Mobile Patient Management System is intended to continuously record, store, and periodically transmit physiological data. The System is indicated for those patients who require monitoring for the detection of non-lethal cardiac arrhythmias. The AVIVO Mobile Patient Management System also monitors, derives and displays:
- ECG .
- Heart Rate (including HR variability) .
- Activity .
- . Posture
- Body Temperature .
- Respiration rate (including RR variability)
Page 2 of 5
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### 510(k) Summary of Safety & Effectiveness
- . Body fluid status
## b. NUVANT
The NUVANT™ Mobile Cardiac Telemetry (MCT) System is intended to continuously measure, record, and periodically transmit physiological data. The System is indicated for those patients who require monitoring for the detection of non-lethal cardiac arrhythmias. The NUVANT system model monitors, derives and displays:
- . ECG
- Heart rate .
The Systems may also monitor, derive and display:
- Activity .
- Posture .
- . Body temperature
- . Respiration rate (including RR Variability)
- . Body fluid status
- Heart rate variability .
# 3. TECHNOLOGICAL CHARACTERISTICS AND SUBSTANTIAL EQUIVALENCE
The NUVANT is essentially the AVIVO with the addition of a patient trigger magnet. The following are the system components of both models:
- PiiX™ (aka Adherent Device) .
- . Patient Trigger Magnet (specific to NUVANT)
- zLink™ (aka Gateway) ●
- Server ●
#### a.
The PiiX is a patient-worn device which is applied to the patient's torso. It contains the ECG electrodes for recording ECG and heart rate data; the impedance sensor for collecting respiration and body fluid data; the accelerometer for collecting activity and posture. Additionally, resided in the PiiX is a heart rate, timing and morphology based arrthythmia detection algorithm which allows the system to discriminate waveforms based on morphology and also count ectopic beats (such as PVCs and PACs) and calculate atrial fibrillation burden of the patient.
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Sensor data and ECG collected by the PiiX are transmitted to the Server via zLink.
## b. Patient Trigger Magnet
Specfic to the NUVANT is the Magnet, which is part of the Patient Trieger feature. This external piece accompanying the PiiX and is used by the patient to manually trigger the ECG collection when he/she experiences symptoms. Patient triggers the ECG collection by swiping the Magnet across the PiiX. The ECG waveform will then be transmitted to the Server via zLink.
# c. zLink
zLink receives information from the PiiX and transmits them to the Corventis Server. It also interacts with the Corventis Server to receive configuration updates and other relevant hardware diagnostic information.
# d. Server
The Server receives sensor data from the PiiX via zLink. Data from the accelerometer is derived into activity and posture; data from the impedance sensor is derived into respiration rate, respiration variability and body fluid status. ECG and heart rate are presented without derivation.
Additionally, the secure server performs the following functions:
- Display the physiological parameters in trend graphs format. .
- . Display ECG waveform that corresponds to a detected arrhythmia
- Provide patient's Afib burden, if applicable .
- Provide visual notifications for the detected arrhythmia. .
- Provide the users the ability to acknowledge or dismiss events. .
#### Transmission Technologies e.
The communication between the PiiX and the zLink is enabled via the BlueTooth™ Technology. The zLink transmits the data to the Server via cellular technology, where healthcare professionals can access with standard browsers.
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# 4. PREDICATE DEVICES
Four (4) predicate devices have been identified:
- 1. AVIVO Mobile Patient Management System, Corventis, Inc., cleared by FDA under 510(k) number K083287; 21 CFR 870.1025, DSI "Arrhythmia Detector and Alarm", and 21 CFR 870.1025, MHX "Patient Physiological Monitor (with arrhythmia detection)"
- 2. NUVANT Mobile Cardiac Telemetry System, Corventis, Inc. cleared by FDA under 510(k) number K090606; 21 CFR 870.1025, DSI "Arrhythmia Detector and Alarm", and 21 CFR 870.1025, MIIX "Patient Physiological Monitor (with arrhythmia detection)"
- 3. Heartrak Smart AF, Universal Medical Incorporated, cleared by FDA under K071130; 21 CFR 870.0290, DXH "Telephone Electrocardiograph Transmitter and Receiver"
- 4. CardioNet ECG Monitor with Arrhythmia Detection Model CN1005, CardioNet Inc., cleared by FDA under K072558; 21 CFR 870.1025, DSI "Arrhythmia Detector and Alarm"
Table 2 below summarizes the compared features and the corresponding predicate devices.
| Features being<br>compared | Subject Devices | Predicate Devices |
|--------------------------------------|-----------------|---------------------------------------------------------------|
| Arrhythmia<br>Detection<br>Algorithm | Modified AVIVO | Heartrak Smart AF (K07113)<br>& Cardionet CN1005<br>(K072558) |
| | Modified MCT | |
| | | |
| All other features | Modified AVIVO | Original AVIVO (K083287) |
| | Modified MCT | Original MCT (090696) |
#### Table 2 Features comparison and corresponding predicate devices
# 5. CONCLUSION
The modified arrhythmia detection algorithm made to the AVIVO Mobile Patient Management System and NUVANT" Mobile Cardiac Telemetry (NUVANT) System does not change the intended use or the fundamental scientific technology of the devices. As supported by the descriptive information and the design verification tests, it is concluded that the AVIVO Mobile Patient Management System and NUVANT™ Mobile Cardiac Telemetry (NUVANT) Systems are as safe and as effective as the predicate devices.
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Image /page/5/Picture/0 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo is circular, with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES-USA" arranged around the top half of the circle. Inside the circle is an abstract symbol that resembles an eagle or bird in flight, composed of three stylized, curved lines.
# DEPARTMENT OF HEALTH & HUMAN SERVICES
Food and Drug Administration 10903 New Hampshire Avenue Document Control Room -WO66-G609 Silver Spring, MD 20993-0002
# AUG 2 7 2009
Corventis, Inc. c/o Madhuri Bhat VP, Clinical and Regulatory Affairs 2033 Gateway Place, Suite 100 San Jose, CA 95110
Re: K091971
Trade/Device Name: AVIVOTM Mobile Patient Management System; and, NUVANT™ Mobile Cardiac Telemetry System
Regulatory Number: 21 CFR 870.1025
Regulation Name: Arrhythmia detector and alarm (including ST-segment measurement and alarm)
Regulatory Class: Class II (Two)
Product Code: DSI
Additional Product Code: MHX
Dated: August 18, 2009
Received: August 20, 2009
#### Dear Mr. Bhat:
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.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to such 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.
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### Page 2 - Madhuri Bhat
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); good manufacturing practice requirements as set forth in the quality systems (OS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050. This letter will allow you to begin marketing your device as described in your Section 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Office of Compliance at (240) 276-0120. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (240) 276-3150 or at its Internet address http://www.fda.gov/cdrh/industry/support/index.html.
Sincerely yours.
una R. Vilmer
A Bram D. Zuckerman, M.D. Director Division of Cardiovascular Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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# Indications for Use
510(k) Number (if known): N/A> K 0 9 197 |
AVIVO™Mobile Patient Management System Device Names:
Indications for Use:
The AVIVO™ Mobile Patient Management System is intended to continuously record, store, and periodically transmit physiological data. The System is indicated for those patients who require monitoring for the detection of non-lethal cardiac arrhythmias. The AVIVO Mobile Patient Management System also monitors, derives and displays:
ECG ●
- Heart Rate (including HR variability) .
- Activity .
- Posture .
- Body Temperature
- Respiration rate (including RR variability)
- Body fluid status
Prescription Use X (Part 21 CFR 801 Subpart D)
AND/OR
Over-The-Counter Use (21 CFR 801 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE OF NEEDED)
# Concurrence of CDRH, Office of Device Evaluation (ODE)
Page | of 2
Duna R. hihnes
(Division Sign-Off) Division of Cardiovascular Devices
510(k) Number_K091971
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# Indications for Use
# 510(k) Number (if known): N/A> K 09 | 9 7 /
NUVANT™ Mobile Cardiac Telemetry System Device Names:
# Indications for Use:
The NUVANT" Mobile Cardiac Telemetry (NUVANT) System is intended to continuously measure, record, and periodically transmit physiological data. The System is indicated for those patients who require monitoring for the detection of non-lethal cardiac arrhythmias. The NUVANT system model monitors, derives and displays:
- ECG ●
- Heart rate .
The Systems may also monitor, derive and display:
- Activity �
- Posture .
- Respiration rate (including RR Variability) .
- Body fluid status .
- Heart rate variability
Prescription Use X (Part 21 CFR 801 Subpart D)
AND/OR
Over-The-Counter Use (21 CFR 801 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE OF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Page 2 of 2
Nuna R. Vochner
ion if Caronwascalar Devices
510(k) Number_k09197 |
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.