Siemens Healthineers AI-Rad Companion vs Subtle Medical
Subtle Medical shortens acquisition and AI-Rad Companion analyses finished images, so the two rarely compete for the same budget line and one imaging center could run both. For an imaging department with a long MR or PET queue, Subtle is the product. Its SubtleHD line spans MR, PET and CT. The company says SubtleHD(MR) runs sequences up to 80% faster and SubtleHD(PET) scans up to 75% faster, and that its software is deployed on more than 1,300 scanners. A neuroradiology group that wants brain volumes measured against a normative database looks to Siemens, whose Brain MR module was cleared in 2020 and again in 2022. The Chest CT module adds coronary calcium and heart volume. All of it arrives through teamplay, with DICOM SR export and PACS delivery.
Radiology · Reviewed November 2, 2026

Siemens Healthineers AI-Rad Companion
by Siemens Healthineers
AI-Rad Companion: Chest CT, Chest X-ray, Brain MR, Prostate MR and Organs RT (radiotherapy contouring) modules, delivered through teamplay.

Subtle Medical
by Subtle Medical
Vendor-neutral deep-learning software that improves MR, PET and CT image quality on faster or lower-dose protocols.
When to pick each one
Siemens Healthineers AI-Rad Companion
- Brain MR volumes against a normative database
- Chest CT coronary calcium and heart volume
- Delivered through teamplay with DICOM SR and PACS
Subtle Medical
- SubtleHD for MR, PET and CT
- Vendor-stated up to 80% faster MRI sequences
- Over 1,300 scanners, per the vendor
Score
Each row shows points earned of points available under the published rubric.
Siemens Healthineers AI-Rad Companion
39of 100
Subtle Medical
37of 100
| Dimension | Siemens Healthineers AI-Rad Companion | Subtle Medical | Difference |
|---|---|---|---|
| FDA clearance | 18 / 18 | 18 / 18 | 0 |
| HIPAA / SOC2 / BAA | 0 / 10 | 0 / 10 | 0 |
| EHR integrations (count) | 0 / 4.2 | 0 / 4.2 | 0 |
| Top-3 EHR coverage (Epic / Oracle / Athena) | 0 / 2.4 | 0 / 2.4 | 0 |
| Peer-reviewed papers | 0 / 18.2 | 7.3 / 18.2 | -7.3 |
| RCT / meta-analysis / systematic review | 0 / 7.8 | 0 / 7.8 | 0 |
| Funding & adoption signal | 12 / 12 | 3 / 12 | +9 |
| Pricing transparency | 2.5 / 5 | 2.5 / 5 | 0 |
| Years in market | 0 / 6 | 0 / 6 | 0 |
Scroll horizontally to see every column.
Pricing
Siemens Healthineers AI-Rad Companion
| Tier | Monthly | Annual | Notes |
|---|---|---|---|
| Enterprise | n/a | n/a | No public price on the vendor page. |
Subtle Medical
| Tier | Monthly | Annual | Notes |
|---|---|---|---|
| Enterprise | n/a | n/a | No public price. Billing period, trial and refund not stated. |
Evidence
Siemens Healthineers AI-Rad Companion
FDA decisions
K252548 (opens in new tab)510(k)2026-04-10
AI-Rad Companion Organs RT, update
K252608 (opens in new tab)510(k)2025-09-09
AI-Rad Companion Prostate MR, update
K242745 (opens in new tab)510(k)2025-03-27
AI-Rad Companion Organs RT, update
K232899 (opens in new tab)510(k)2024-04-03
AI-Rad Companion Organs RT, update
K222360 (opens in new tab)510(k)2023-04-06
AI-Rad Companion (Cardiovascular), update
Show 8 more
K222361 (opens in new tab)510(k)2022-10-20
AI-Rad Companion (Musculoskeletal)
K213706 (opens in new tab)510(k)2022-04-15
AI-Rad Companion Brain MR, update
K193562 (opens in new tab)510(k)2020-11-06
AI-Rad Companion Organs RT
K193283 (opens in new tab)510(k)2020-07-30
AI-Rad Companion Prostate MR
K193290 (opens in new tab)510(k)2020-06-17
AI-Rad Companion Brain MR
K183268 (opens in new tab)510(k)2019-09-10
AI-Rad Companion (Cardiovascular)
K183271 (opens in new tab)510(k)2019-07-26
AI-Rad Companion (Pulmonary)
K183272 (opens in new tab)510(k)2019-02-01
AI Rad Companion (Engine)
Subtle Medical
FDA decisions
K254120 (opens in new tab)510(k)2026-05-15
SubtleHD-CT 1.x
K254013 (opens in new tab)510(k)2026-05-14
SubtleHD-PET 1.x
K243250 (opens in new tab)510(k)2025-02-12
SubtleHD 1.x
K240290 (opens in new tab)510(k)2024-08-21
AiMIFY 1.x
K241329 (opens in new tab)510(k)2024-07-11
SubtleSYNTH 1.x
Show 6 more
K233699 (opens in new tab)510(k)2024-04-29
SubtleREFORMAT 1.x
K223623 (opens in new tab)510(k)2023-05-11
SubtleMR 2.3.x
K211964 (opens in new tab)510(k)2021-09-28
SubtlePET
K203182 (opens in new tab)510(k)2021-02-26
SubtleMR
K191688 (opens in new tab)510(k)2019-09-16
SubtleMR
K182336 (opens in new tab)510(k)2018-11-30
SubtlePET
Peer-reviewed
1 PubMed record names Subtle Medical.
Compliance and integrations
Documented from each vendor’s own pages.
| Spec | Siemens Healthineers AI-Rad Companion | Subtle Medical |
|---|---|---|
| Free tier | ||
| HIPAA | ||
| SOC 2 Type II | ||
| EHR integrations | Not specified | Not specified |
| Founded | n/a | n/a |
| HQ | DE | n/a |
Scroll horizontally to see both columns.
Common questions
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