Glasshaus Imaging · FFR-CT and plaque analysis
FFR-CT and coronary plaque analysis, read by a cardiac radiologist
Remote coronary CTA reading services that bring HeartFlow FFRct, Keya CT-FFR and Cleerly plaque results into one signed report, with the full chest reviewed on every study.
- Cleveland Clinic fellowship-trained
- Board-certified (ABR, CBCMR)
- Licensed in 38 states
- Routine reads within 24 hours
Read and reviewed by Giovanni E. Lorenz, DO, Cleveland Clinic fellowship-trained cardiothoracic radiologist. Board-certified: American Board of Radiology; Certification Board of Cardiovascular Magnetic Resonance. Last reviewed .
Why a radiologist still matters with AI
FFR-CT and AI plaque quantification are only as good as the coronary CTA behind them. Someone has to judge image quality, confirm the stenosis grade, check the AI output against the images and look at the rest of the chest. Many sites have the scanner and the software but no cardiac reader to do that. Glasshaus is that reader.
One report, not three
CCTA findings with CAD-RADS, FFR-CT values and plaque quantification together, plus any incidental chest findings.
Helps sort cath from medical therapy
For intermediate stenoses, FFR-CT helps show which lesions are likely to limit flow, which supports the choice between invasive angiography and medical management.1
Plaque-based risk management
AI plaque quantification shows how much plaque there is and what kind, which supports prevention and follow-up plans.2
IT-ready
No PACS or IT build on your side. Sites start sending studies within days, and hospital credentialing runs in parallel.
FFR-CT reading (CT-FFR)
FFR-CT estimates how much each coronary narrowing limits blood flow, using the coronary CTA you already have. The 2021 AHA/ACC chest pain guideline lists it as reasonable (Class 2a) when CTA shows a 40% to 90% stenosis in a proximal or middle segment.1 We read the CTA, decide when FFR-CT will add value, and report the HeartFlow FFRct or Keya results in context with the anatomy. FFR-CT is reported with CPT 75580.3
AI coronary plaque quantification
AI plaque analysis measures total plaque and its makeup, such as calcified and noncalcified plaque, from the coronary CTA. Since January 1, 2026 it has its own Category I CPT code, 75577, which requires a physician interpretation and report.2 We review Cleerly and similar plaque output against the images and include it in the final report, so the cardiologist can use it for risk management and follow-up.
Who it’s for
- Cardiology practicesYou scan in office and use FFR-CT or plaque AI, but have no radiologist reading the coronaries and full chest.
- Imaging centersAdd FFR-CT and plaque analysis to your CCTA menu without hiring a cardiac radiologist.
- Hospitals and health systemsDaytime cardiac CT coverage and overflow as FFR-CT and plaque volume grows.
FFR-CT and plaque analysis: common questions
Do you read FFR-CT and AI plaque analysis results?
Yes. We read the coronary CTA and the full chest, then fold HeartFlow FFRct, Keya or Cleerly results into one signed report, so the ordering physician has the anatomy, the physiology and the plaque picture in one place.
When is FFR-CT used after coronary CTA?
The 2021 AHA/ACC chest pain guideline lists FFR-CT as reasonable (Class 2a) when coronary CTA shows a 40% to 90% stenosis in a proximal or middle coronary segment, to help decide whether revascularization is needed.
Is AI coronary plaque analysis billable?
Since January 1, 2026, AI-enabled coronary plaque quantification has had its own Category I CPT code, 75577, which requires interpretation and a report by a physician. Check coverage with your payers.
Do we need new PACS or IT to work with a remote cardiac CT reader?
No. Glasshaus is IT-ready. Studies route from your scanner to our reading platform, or we can read on your PACS. Most sites start sending cases within days, and hospital credentialing runs in parallel.
Sources: 1 2021 AHA/ACC chest pain guideline, FFR-CT Class 2a (JACC: Cardiovascular Imaging). 2 CPT 75577 for coronary plaque analysis, effective Jan 1, 2026 (ACC). 3 CPT 75580 descriptor (ACR). HeartFlow, FFRct, Keya and Cleerly are trademarks of their owners; Glasshaus is an independent reading practice.
Need a reader for FFR-CT and plaque analysis?
Tell us your modalities, states and volume. We’ll reply within one business day with a coverage plan and an onboarding date.
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