ClearRead CT CAC

by Riverain Technologies  · Based in United States → — See Clearly. Decide Confidently.™ Streamline reading time, improve accuracy, and quantify population health metrics in cardiothoracic imaging.
Cardiology Radiology

Subscription-based, with a saas cost per scan model available.
Regulatory Status Disclosed

Overview

ClearRead CT CAC is an AI-powered software solution developed by Riverain Technologies, designed to enable opportunistic screening for coronary artery calcification (CAC) from routine, ungated, non-contrast chest CT scans. It is part of the broader ClearRead CT suite, which also includes tools for pulmonary nodule detection and vessel suppression.

The technology leverages advanced artificial intelligence algorithms to accurately detect, quantify, and report Agatston scores and risk levels for CAC. This capability allows healthcare providers to assess cardiac risk in patients undergoing CT scans for other indications, potentially leading to earlier intervention for atherosclerotic cardiovascular disease. Clinical studies have demonstrated high agreement between ClearRead CT CAC and both ground truth radiologists and paired gated cardiac exams. The software is designed for seamless integration into existing PACS workflows and offers normalization capabilities to ensure consistent results across various CT systems.

Reviewed by Pouyan Golshani, MD — Interventional Radiologist

Key Features

  • Accurate detection and quantification of Coronary Artery Calcification (CAC)
  • Calculates Agatston scores on ungated, non-contrast CTs
  • Enables opportunistic screening for atherosclerotic cardiovascular disease
  • High agreement with ground truth radiologists and gated cardiac CTs
  • Normalization for consistent results across CT systems
  • Seamless integration with existing PACS workflow
  • Part of ClearRead CT suite (includes pulmonary nodule detection, vessel suppression)
  • AI-powered precision for cardiac risk assessment
  • Reduces radiology reading time (general ClearRead CT benefit)
  • Provides risk level reporting

Use Cases

  • Opportunistic screening for coronary heart disease from routine chest CTs
  • Early detection and assessment of cardiac risk
  • Enhancing lung cancer screening programs with CAC scoring
  • Improving diagnostic accuracy and efficiency in radiology workflow
  • Preventing patient leakage by offering comprehensive cardiac risk assessment

What Physicians Need to Know

Cardiac CT/MRI Analysis
ClearRead CT CAC is designed for the analysis of non-gated, non-contrast chest CT images to assess coronary artery calcification (CAC). It automatically identifies and quantifies calcified coronary lesions, assigning them to specific arteries (RCA, LM, LAD, LCX). The software calculates the Agatston score for each artery and a total score, calibrated to 3.0mm slice thickness, which is used to derive a CAC category and arterial age. The technology leverages advanced AI and machine learning to ensure consistent imaging results across various devices and patient populations. It also features unique suppression technology to remove interfering normal structures like bones and vessels, providing an unimpaired view for radiologists.
Coronary Artery Assessment
The tool accurately detects, quantifies, and reports an Agatston score for coronary artery calcification. It locates calcified lesions and assigns them to the right coronary artery (RCA), left main artery (LM), left anterior descending artery (LAD), and left circumflex artery (LCX). The software then calculates the Agatston score for each artery and a total score, which is used to determine a CAC category and arterial age. This allows for opportunistic CAC scoring on routine non-contrast, ungated chest CT scans, which can be a valuable addition to lung cancer screening programs or for patients undergoing CT scans for unrelated reasons.
AHA/ACC Guideline Alignment
Coronary artery calcification (CAC) scoring, as provided by ClearRead CT CAC, is a widely recognized method for assessing cardiovascular risk. Guidelines from various organizations, including the NLA and SCCT, cover the use of CAC to guide therapies, such as statin and aspirin. The main consensus among different country guidelines is that CAC should be used in patients aged ≥40 years and for intermediate-risk and asymptomatic patients with a CAC score >100 to initiate or consider statin therapy. A CAC score of 0 can lead to downgrading cardiovascular risk, potentially allowing statins to be withheld.
Physician Tip

ClearRead CT CAC is particularly useful for opportunistic screening of coronary artery calcification on non-gated, non-contrast chest CT scans, which are often performed for other indications like lung cancer screening. This allows for early detection of cardiovascular risk in a broader patient population who might otherwise go undetected. The Agatston score provided by the software is a strong predictor of future cardiac events. The technology's ability to normalize images ensures consistent results across different CT systems. It can help in identifying patients who may benefit from earlier intervention and more aggressive management of cardiovascular risk factors.

ClearRead CT CAC is part of the ClearRead CT cardiothoracic AI suite. It is designed to integrate seamlessly into existing radiology workflows and PACS review stations, eliminating the need for dedicated workstations. The output is generated in DICOM format. The ClearRead Chest suite, which includes CAC analysis, is available through platforms like RapidAI's Rapid Enterprise Platform and CARPL.ai, expanding access to its advanced imaging intelligence within unified enterprise workflows. This integration aims to reduce fragmentation, accelerate action, and improve efficiency with features like automatic segmentation, measurement, comparison with prior exams, and reporting integration into RIS-PACS.

Details

Category Cardiology AI
Pricing Subscription-based, with a saas cost per scan model available.
Free TrialUnknown
DeploymentOn-premise and cloud options.
Mobile AppYes, ClearRead Chest will integrate with RapidAI's mobile and web applications.
Data ExportUnknown
TrainingUnknown
Compliance
BAA AvailableUnknown
HIPAA Compliant Yes AI-estimated
FDA Status Cleared AI-estimated
SOC 2 Yes AI-estimated
GDPR Yes AI-estimated
Integrations
EHR Not specified
Specialties Cardiology, Radiology

Support & Reliability

Training ProvidedUnknown

What the Web Says

ClearRead CT CAC by Riverain Technologies is an AI-powered software designed for opportunistic screening of coronary artery calcification (CAC) by detecting, quantifying, and reporting Agatston scores from routine, ungated, non-contrast chest CT scans. It aims to broaden screening for atherosclerotic cardiovascular disease by enabling the calculation of Agatston scores on non-gated CTs, which traditionally required specialized cardiac-gated CTs. The software has shown high agreement with both ground-truth radiologists and paired cardiac-gated CTs in clinical studies.

Overall: Positive

Strengths

  • Accurately detects, quantifies, and reports Agatston scores from routine, ungated, non-contrast chest CT scans.
  • High agreement (96%) with ground-truth radiologists for CAC scoring.
  • High agreement (90%) with paired cardiac-gated CTs for CAC scoring.
  • Enables opportunistic screening for coronary artery disease, identifying risk in patients undergoing CT scans for other reasons.
  • Can reduce reading times for radiologists.
  • FDA 510(k) cleared and Health Canada approved.

Limitations

  • Limited public product reviews outside of scientific studies and comparisons.
  • No reviews found on Capterra or Reddit.
  • G2 and Capterra show reviews for other companies with similar names, not Riverain Technologies.
  • Provided segmentations are for illustrative purposes only and not intended for diagnostic use.
  • Provides adjunctive information and is not intended to be used without clinical expert review.

Based on reviews from: physicianaitools.com, auntminnie.com, riveraintech.com, cardiovascularbusiness.com, theimagingwire.com, aidoc.com, signifyresearch.net, fda.gov, theaiinsider.tech, nih.gov, medrxiv.org

Last updated: 2026-10-31

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Press & Coverage

Scientific Reports
Evaluation of an Artificial Intelligence Model for Opportunistic Agatston Scoring on Non-Gated Chest Computed Tomography
A retrospective study published in Scientific Reports compared the accuracy of Riverain Technologies' ClearRead CT CAC in calculating Agatston scores on non-gated CTs to both radiologist interpretations and scores from cardiac gated CTs. The study, involving 491 non-contrast CT chest cases, found high agreement between the AI model and ground truth radiologists, as well as with paired cardiac gated CTs.
2025-02
riveraintech.com
Riverain Technologies Announces Health Canada Approval of ClearRead CT CAC for Opportunistic Coronary Artery Calcification Quantification
Riverain Technologies announced on March 18, 2025, that Health Canada has approved ClearRead CT CAC, an AI solution for opportunistic coronary artery calcification quantification on ungated, non-contrast chest CT exams. This approval allows Canadian radiologists to use the tool for early detection and risk stratification of cardiovascular disease.
2025-03
PRNewswire
New Technology from Riverain Adds Coronary Artery Calcification Scoring to Ungated Chest CT Scans
Riverain Technologies announced on December 3, 2024, the FDA clearance of ClearRead CT CAC, enabling incidental coronary artery calcification (CAC) scoring on ungated, non-contrast chest CT scans. This technology aims to help identify heart disease risk in patients undergoing CT scans for other reasons.
2024-12
fda.gov
510(k) Premarket Notification for ClearRead CT CAC
The FDA's 510(k) premarket notification for ClearRead CT CAC, dated December 3, 2024, details the device's intended use as image processing software to aid physicians in assessing coronary artery calcification on non-gated, non-contrast chest CT scans for adults 30 years or older. The primary output is the Agatston score.
2024-12
riveraintech.com
Study Shows ClearRead™ CT CAC for Incidental Coronary Artery Calcification Highly Effective on Ungated CT Exams
A study published in Scientific Reports, and highlighted by Riverain Technologies on November 17, 2025, demonstrated that ClearRead CT CAC technology has high agreement with both ground truth radiologists and paired gated cardiac exams for scoring incidental coronary artery calcification on ungated CT exams. This validates its use for cardiovascular risk assessment.
2025-11

Videos

Product demos, reviews, and walkthroughs for ClearRead CT CAC.

View all on YouTube

Frequently Asked Questions

ClearRead CT CAC integrates seamlessly into the PACS workflow, providing output in DICOM format that is readable in your existing PACS. It functions as an additional series in the patient study, eliminating the need for a separate application viewer. The system also offers automated reporting of CAC analysis integrated into the radiology report.
While ClearRead CT CAC is a valuable screening tool for calcified plaque, it does not detect non-calcified plaque, which can lead to underestimation of risk, especially in younger or symptomatic patients with early-stage atherosclerosis. Additionally, widespread implementation of CAC scoring may increase downstream testing and resource utilization if not applied to appropriately selected patient populations.
Alternatives for coronary artery calcium scoring include other AI-powered solutions such as Bunkerhill iCAC, Coreline AVIEW CAC, Imbio CAC Software, and HeartLung AI-CVD. Additionally, scanner-console calcium scoring options are available from manufacturers like Siemens, Canon, and GE.
ClearRead CT CAC is FDA-cleared technology. It is intended to aid physicians in assessing coronary artery calcification on non-gated, non-contrast, standard, or low-dose chest CT scans for adult patients aged 30 years or older. The primary output is the Agatston score, and the software locates calcified coronary lesions and assigns them to specific coronary arteries.
ClearRead CT CAC enables opportunistic screening for atherosclerotic cardiovascular disease by providing CAC scores from routine, ungated, non-contrast chest CT scans, which can help identify patients who might otherwise go undetected. This allows for earlier intervention and assessment of cardiac risk, potentially improving patient outcomes.
Riverain Technologies offers an ROI calculator to estimate the financial impact of ClearRead CT CAC, including a SaaS cost per scan. With the introduction of Medicare code G0680, effective April 1, 2026, AI-powered detection and quantification of coronary artery calcium can be reimbursed, creating a new revenue pathway for imaging studies. Reimbursement is specific to the Hospital Outpatient Prospective Payment System (OPPS) and rates may vary by geography.

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Suggest an Edit → | Report an issue | Last Verified: 2026-04-19 | First Added: 2026-04-19
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