Aidoc vs Subtle Medical (2026)
Two imaging AI companies doing different jobs that compete for the same budget. Aidoc finds things: aiOS runs its own cleared triage algorithms and partner algorithms across an imaging estate, including a January 2026 clearance for 11 acute findings on body CT built on its CARE foundation model. Subtle Medical changes the image: deep learning that denoises and sharpens MRI, PET and CT so a department can scan faster or at lower dose on the scanners it already owns, with 11 FDA cleared products by the company's count. If studies are read too late, look at Aidoc. If scanner time is the bottleneck and the waiting list is the problem, Subtle returns capacity without adding to the radiologist's read.
- Triage across body CT from one foundation model, with sensitivity of 94.0 to 99.3 percent and specificity of 95.7 to 99.3 percent across 11 findings, on 280 cases per finding.
- One platform for many models, its own and partners', with continuous performance monitoring built in.
- Identifiers stripped inside the customer's environment before upload and reattached locally when results return.
- It detects nothing, by design: enhancement raises image quality or shortens scans on existing scanners, so the benefit is throughput.
- Prospective multicenter evidence for 60 percent faster brain MRI (AJNR, 2021), and a cleared change plan for SubtleHD on MRI.
- Outside checks named: SOC 2 Type II audited annually, and ISO/IEC 42001 certification for its AI management system.
This comparison is published by AI Health Index, an independent research platform that compares healthcare AI vendors objectively. Aidoc and Subtle Medical are each graded against the same capability taxonomy, from each vendor's own public materials and the regulatory record, under the AI Health Index verification standard. No vendor pays for placement, and no vendor has reviewed this page. How this evidence is graded
Plain facts
| Fact | Aidoc | Subtle Medical |
|---|---|---|
| Primary category | Radiology & Imaging AI | Radiology & Imaging AI |
| Founded | 2016 | Not recorded |
| Headquarters | Tel Aviv, Israel | Menlo Park, California |
| Website | aidoc.com | subtlemedical.com |
Side by Side
Select any grade to read the note behind it.
Product updates
The latest logged changes from each vendor, newest first, each linked to its source.
Aidoc
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Regulatory / FDA
Aidoc received FDA Breakthrough Device Designation for CARE Chest X-Ray Triage, built on its CARE foundation model, covering triage of pneumomediastinum and lobar or lung collapse.
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Clinical evidence
Mercy and Aidoc released a white paper, commissioned by AVIA, reporting on five months of AI deployment across the Mercy health system.
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Regulatory / FDA
The FDA cleared Aidoc's comprehensive abdomen CT triage solution, powered by its self developed CARE foundation model, bringing 11 newly cleared indications together with three previously cleared into a single 14 indication workflow.
Source
Subtle Medical
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Regulatory / FDA
Subtle Medical received FDA clearance for SubtleHD (PET), a next generation AI PET image enhancement product for PET/CT and PET/MR systems.
Source
Each vendor in one paragraph
Written to be quoted whole. Each paragraph opens the AI Health Index profile of the vendor: what the product is, who buys it and what it does.
Aidoc sells clinical AI for imaging triage and follow up to health systems, delivered through aiOS, an enterprise platform that runs Aidoc's own FDA cleared algorithms alongside vetted partner algorithms and carries care coordination and patient management. Aidoc Medical was established in early 2016 in Tel Aviv and is led by cofounder and chief executive Elad Walach.
Source: AI Health Index, September 2026
Deep learning software that enhances and accelerates image acquisition on existing scanners rather than detecting disease. SubtleHD denoises and sharpens MRI (cleared February 2025, K243250, with a Predetermined Change Control Plan), PET (cleared May 2026, supporting all FDA approved radiotracers) and CT (the company's first CT clearance and its eleventh FDA cleared product), succeeding SubtlePET (2018) and SubtleMR.
Source: AI Health Index, September 2026
Questions buyers ask
How do Aidoc and Subtle Medical work with the EHR?
Aidoc ingests DICOM routed or queried from PACS and VNA or sent from modalities, plus HL7 messages, and returns results to a desktop widget, the native worklist, the reporting system, or PACS as a separate series. Authentication runs through Active Directory, a dedicated single sign on, or sign on through PACS, RIS or dictation software, a practical detail in a radiology department.
With Subtle Medical, the image processing stops at the archive, with no bidirectional integration into a record system named. Nor does Subtle say whether the output records which model version processed the study, or how enhanced or synthetic series are labeled for the reader. From the AI Health Index, drawn from each vendor's own published materials and the regulatory record, verified September 25, 2026. No vendor pays for placement.
How are Aidoc and Subtle Medical priced and sold?
Aidoc sells aiOS and its cleared modules to health systems under enterprise agreements through a demo, and maintains an AWS Marketplace listing, which makes the procurement channel public; the listing states that pricing depends on the duration and terms of the contract agreed with the vendor. Whether pricing runs per module, per study volume or per site, and how partner algorithms on aiOS are billed, is not stated.
For Subtle Medical, no rate card, no pricing basis, no statement of whether the model is per scanner, per site, per study or subscription, no term, no minimum and no volume banding. From the AI Health Index, drawn from each vendor's own published materials and the regulatory record, verified September 25, 2026. No vendor pays for placement.
How do Aidoc and Subtle Medical handle patient data?
With Aidoc, the company's security and privacy documentation describes a new DICOM object created before upload carrying only non PHI data and a newly generated identifier; analysis runs on that object, and the identifier re-attaches PHI locally when results return.
The SubtleEDGE gateway removes identifiers before images leave the facility, and the cloud environment is encrypted and run as if it held PHI. Under SubtleShare, customers share de-identified images with Subtle after processing, study by study, and the DICOM conformance statement says the program is part of the contract unless the customer opts out. From the AI Health Index, drawn from each vendor's own published materials and the regulatory record, verified September 25, 2026. No vendor pays for placement.
Which settings and specialties do Aidoc and Subtle Medical cover?
For Aidoc, the company reports use in more than 1,600 medical centers and names health systems including WellSpan, Mercy, Yale New Haven, St. Luke's and Renown. Validation sits at the level of each cleared indication, with its own FDA review, and the research library is organized by condition.
With Subtle Medical, the products cover MRI of all body parts, PET across tracers, CT, synthetic STIR for the spine and brain alignment, on scanners of any make, in hospitals and imaging centers, including pediatric examples. From the AI Health Index, drawn from each vendor's own published materials and the regulatory record, verified September 25, 2026. No vendor pays for placement.
Related comparisons
Other published head to head assessments involving these vendors or their closest peers.
Both records were reviewed on this site in September 2026. The failure modes are opposite. A triage model that degrades quietly returns worklists to their usual order; an enhancement model that degrades produces cleaner images that may have lost or altered a small lesion, and the reader sees no sign of it. Subtle's larger speed claims, up to 80 percent for MRI and 75 percent for PET, rest on company examples.
Subtle shares images stripped of identifiers back to itself by default unless the customer opts out. Aidoc claims ISO 27001 but states no business associate status. Neither publishes pricing.