Circle Cardiovascular Imaging vs Pearl
Pearl's FAQ names DEXIS, Carestream, Romexis, Sidexis, Open Dental and Eaglesoft, which puts its buyer in a dental group. Pearl says Second Opinion marks up to 18 findings per image on bitewing, periapical and panoramic radiographs. A DSO checking the vendor's figures finds them at odds: the home page says 26+ clearances and 29,000 practices, the About page says 26 and 23k+, and openFDA shows eight Second Opinion decisions.
Two studies give accuracy. Diagnostics in 2025 reported 91.0% sensitivity for caries and 86.6% for periapical lesions with Second Opinion v1.1. A 2026 Caries Research comparison of five systems, Second Opinion among them reported secondary caries sensitivity between 0.327 and 0.487.
Circle's partner page names integrated solutions with GE Healthcare and Siemens Healthineers, which points to a hospital imaging service doing cardiac or stroke work. Dental groups and hospital imaging services are separate buyers here.
Radiology · Reviewed November 2, 2026
Circle Cardiovascular Imaging
by Circle Cardiovascular Imaging Inc. · founded 2007
cvi42 cardiac MR and CT software with FDA-cleared AI coronary plaque analysis and StrokeSENS acute stroke tools.
Pearl
by Pearl Inc. · founded 2019
FDA-cleared dental x-ray AI (Second Opinion) that marks caries, bone loss and restorations, for dentists and DSOs.
When to pick each one
Circle Cardiovascular Imaging
- Stroke CT tools with FDA K250221 and K212261
- Integrated solutions with GE Healthcare and Siemens
Pearl
- Reads bitewing, periapical and panoramic radiographs
- Integrations include DEXIS, Open Dental and Eaglesoft
Score
Each row shows points earned of points available under the published rubric.
Circle Cardiovascular Imaging
42of 100
Pearl
33of 100
| Dimension | Circle Cardiovascular Imaging | Pearl | 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 | 0 / 18.2 | 0 |
| RCT / meta-analysis / systematic review | 0 / 7.8 | 0 / 7.8 | 0 |
| Funding & adoption signal | 8.4 / 12 | 3 / 12 | +5.4 |
| Pricing transparency | 2.5 / 5 | 2.5 / 5 | 0 |
| Years in market | 6 / 6 | 4.2 / 6 | +1.8 |
Scroll horizontally to see every column.
Pricing
Circle Cardiovascular Imaging
| Tier | Monthly | Annual | Notes |
|---|---|---|---|
| Enterprise | n/a | n/a | No public price. |
Pearl
| Tier | Monthly | Annual | Notes |
|---|---|---|---|
| Enterprise | n/a | n/a | No public price. |
Evidence
Circle Cardiovascular Imaging
FDA decisions
K251027 (opens in new tab)510(k)2025-10-27
cvi42 Coronary Plaque Software Application
K250221 (opens in new tab)510(k)2025-07-01
StrokeSENS ASPECTS Software Application
K242781 (opens in new tab)510(k)2024-10-15
cvi42 Software Application
K241038 (opens in new tab)510(k)2024-06-07
Cardiac CT Function Software Application
K232661 (opens in new tab)510(k)2023-12-07
Myocardial Strain Software Application
Show 7 more
K222593 (opens in new tab)510(k)2023-01-18
TruPlan Computed Tomography Imaging Software
K213998 (opens in new tab)510(k)2022-07-28
cvi42 Auto Imaging Software Application
K212261 (opens in new tab)510(k)2021-10-14
StrokeSENS LVO
K202212 (opens in new tab)510(k)2021-02-19
TruPlan
K141480 (opens in new tab)510(k)2014-08-22
CVI42
K111373 (opens in new tab)510(k)2011-08-23
CT42 Cardiac CT Software
K082628 (opens in new tab)510(k)2008-11-20
CMR42 Cardiac MRI Imaging System
Pearl
FDA decisions
K250525 (opens in new tab)510(k)2025-11-14
Second Opinion Panoramic
K243234 (opens in new tab)510(k)2025-06-12
Second Opinion CS
K243989 (opens in new tab)510(k)2025-05-23
Second Opinion 3D
K243230 (opens in new tab)510(k)2025-05-09
Second Opinion BLE
K243893 (opens in new tab)510(k)2025-05-05
Second Opinion Pediatric
Show 3 more
K242600 (opens in new tab)510(k)2025-04-11
Second Opinion Periapical Radiolucency Contours
K242522 (opens in new tab)510(k)2025-01-16
Second Opinion CC
K210365 (opens in new tab)510(k)2022-03-04
Second Opinion
Compliance and integrations
Documented from each vendor’s own pages.
| Spec | Circle Cardiovascular Imaging | Pearl |
|---|---|---|
| Free tier | ||
| HIPAA | ||
| SOC 2 Type II | ||
| EHR integrations | Not specified | Not specified |
| Founded | 2007 | 2019 |
| HQ | CA | US |
Scroll horizontally to see both columns.
Common questions
Open the full radiology comparison
Acute-care triage, mammography screening, CCTA plaque analysis, mobile MRI. 30+ FDA-cleared platforms across stroke, oncology, cardiac. Enterprise sales only — we compared what's deployed where.