Circle Cardiovascular Imaging Inc. (Circle CVI)

Calgary, Alberta, Canada  All Canada companies → — Founded 2007
Imaging AI Specialist Specialty-Focused AI
Private Equity-Backed
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Products

Cardiac CT Function Software Application
Circle Cardiovascular Imaging Inc. (Circle CVI)
Cardiology AI
Circle Cardiovascular Imaging's Cardiac CT Function Software Application uses AI/ML to analyze multi-phase, multi-slice cardiovascular CT angiography images, segmenting cardiac structures and quantifying key function metrics like ejection fraction and volumes. It is part of the cvi42 platform, enhancing diagnostic workflows and patient care.

See all 1 product →

About Circle Cardiovascular Imaging Inc. (Circle CVI)

Circle Cardiovascular Imaging Inc. (Circle CVI) is a Canadian-based healthcare AI company founded in 2007, specializing in innovative software solutions for cardiovascular imaging analysis and improved patient care. Their flagship platform, cvi42, is an AI-native, multi-modality software designed for reading, quantifying, and reporting advanced cardiac imaging studies. This platform supports various imaging techniques, including Cardiac MR (CMR), Cardiac CT, vascular CT, structural heart, electrophysiology, and neurovascular CT.

For physicians, Circle CVI’s cvi42 platform offers best-in-class image reading and reporting tools that integrate AI to automate and standardize the analysis of cardiac images. This allows for accurate quantification of heart function, visualization of tissue abnormalities, and identification of complex cardiovascular conditions. The software aims to improve diagnostic accuracy, streamline clinical workflows, and enhance patient outcomes by providing precise and reproducible measurements. Recent updates to cvi42, such as version 6.5, introduce workflow automation, reporting enhancements, and platform improvements to help clinicians move more efficiently from acquisition to insight, including automated 4D Flow preprocessing and streamlined CT workflows. Additionally, cvi42|Plaque, an FDA-cleared, on-premise AI-enabled module, allows for comprehensive coronary plaque analysis, supporting risk stratification, preventive therapy decisions, and revascularization planning.

Focus Areas

cardiovascular imaging software AI-powered medical imaging cardiac MRI analysis cardiac CT analysis vascular CT analysis neuro CT analysis quantitative imaging image post-processing diagnostic reporting treatment planning

Business Intelligence

TechnologyAI-powered, multi-modality software platform (cvi42) with server-side processing and on-premise solutions

What Physicians Need to Know

AI-Powered Medical Imaging
Circle CVI's cvi42 platform is an AI-native solution that automates key tasks like segmentation, contouring, and quantitative measurement across cardiac MRI and CT studies. This includes AI-driven quantification for various cardiovascular analyses, such as coronary plaque quantification, vascular analysis, and cardiac function assessment.
Comprehensive Cardiovascular Analysis
The cvi42 platform offers a single, vendor-neutral environment for analyzing cardiac MR, cardiac CT, vascular CT, structural heart, electrophysiology, and neurovascular CT. This breadth supports the entire cardiovascular disease lifecycle, from prevention and early detection to diagnosis, treatment, follow-up, and surveillance.
Cardiac MRI Analysis
cvi42 provides comprehensive, fast, and accurate reading and reporting for cardiac MR, including quantification of cardiac function, flow, and tissue abnormalities with AI-based contouring. It supports applications for heart failure, ischemic heart disease, cardiomyopathies, valvular heart disease, and more.
Cardiac CT Analysis
The platform offers dedicated tools for assessing coronary artery disease, including AI-automated coronary lumen and wall segmentation, detailed plaque assessment (calcified, non-calcified, low-attenuation), and remodeling index calculation. It also provides AI-powered calcium scoring and cardiac function analysis from CT scans.
Vascular CT Analysis
Circle CVI has expanded its cvi42 platform to include advanced Vascular CT analysis, integrating AI-driven vascular analysis technology. This enables clinicians to analyze complex vascular anatomy for diagnosis, endovascular procedure planning, and post-treatment surveillance within the same platform.
Neuro CT Analysis
The cvi42 platform also delivers image reading and reporting tools for neuro CT.
Quantitative Imaging & Image Post-Processing
Circle CVI focuses on unlocking data insights from medical imaging procedures to empower efficient and reliable decision-making. Their platform provides seamless image post-processing solutions across different scanning platforms, improving patient throughput, accuracy, and reproducibility with AI-based imaging technology.
Diagnostic Reporting & Treatment Planning
cvi42 offers customizable structured reporting for various cardiac and vascular evaluations, including pre-procedure planning for structural heart interventions like Left Atrial Appendage Closure, Aortic, and Mitral valve replacement. It also provides tools for visualizing and reporting findings to aid in treatment decisions.
Structural Heart Planning
The cvi42 platform provides automated planning, standardized reporting, and single-platform efficiency for Transcatheter Aortic Valve Replacement (TAVR) programs, aiding in pre-procedural assessment and follow-up. It helps heart teams align around consistent, case-specific plans.
Electrophysiology
Circle CVI's platform includes capabilities for electrophysiology procedure planning, such as visualizing and quantifying LV fibrosis (MR) and surrounding anatomical structures (CT) with ADAS 3D.
Physician Tip

For physicians, Circle CVI's cvi42 platform offers a unified, AI-driven solution that streamlines cardiovascular imaging workflows, from acquisition to insight. The platform's vendor-neutrality and comprehensive capabilities across multiple modalities (Cardiac MR, CT, Vascular CT, Neuro CT, Structural Heart, Electrophysiology) mean less 'swivel-chair' medicine and more consistent analysis. The AI-powered automation for segmentation, quantification, and reporting aims to increase productivity, reduce manual workload, and provide faster, more reproducible results, ultimately returning clinician time to patient care. Furthermore, the on-premise processing of AI models ensures data security and aligns with hospital IT policies, giving clinicians greater control over patient data. The detailed plaque quantification and advanced vascular analysis can enhance diagnostic confidence, improve risk stratification, and inform more personalized treatment plans. The standardized reporting and planning tools also support better collaboration across multidisciplinary heart teams.

Circle CVI's cvi42 platform is designed for seamless integration with existing systems and workflows, including PACS/VNA, EMR, DICOM, HL7, and reporting interfaces. It is compatible with all major vendor systems. The company emphasizes a single platform approach to consolidate functions and optimize efficiency across the imaging portfolio, reducing the complexities associated with managing multiple 'best-of-breed' tools. This unified architecture simplifies security, monitoring, and support for IT and operations teams. Circle CVI also collaborates with other companies, such as Astute Imaging for vascular CT analysis and GE HealthCare for quantitative cardiac stress perfusion MRI workflows.

Products by Circle Cardiovascular Imaging Inc. (Circle CVI)

1 product in the directory

Cardiac CT Function Software Application
Circle Cardiovascular Imaging Inc. (Circle CVI)
Cardiology AI
Circle Cardiovascular Imaging's Cardiac CT Function Software Application uses AI/ML to analyze multi-phase, multi-slice cardiovascular CT angiography images, segmenting cardiac structures and quantifying key function metrics like ejection fraction and volumes. It is part of the cvi42 platform, enhancing diagnostic workflows and patient care.

What the Web Says

Circle Cardiovascular Imaging Inc. (Circle CVI) is a Canadian company founded in 2007 that specializes in AI-based software solutions for cardiovascular and cerebrovascular imaging analysis, aiming to improve patient care. Their flagship product, cvi42, is used in over 2,100 sites in more than 90 countries and is found in 70% of the world's top 50 hospitals of 2023. The company receives high marks for its product's comprehensiveness, speed, accuracy, and customer service, as well as for its positive work environment and employee development.

Overall: Positive

Strengths

  • Comprehensive and complete tools for both routine and advanced studies.
  • Speed, accuracy, and optimized workflows for clinical use.
  • Excellent customer service and a drive for continuous improvement and innovation.
  • User-friendly interface and easy to navigate software.
  • Supportive and inclusive work environment with opportunities for growth and development.
  • AI-based imaging technology for fast and accurate diagnoses, with seamless integration into existing systems.

Limitations

  • Some users on G2 reported experiencing bugs and glitches.
  • Learning curve for setting up access groups, paywalls, and memberships in their community platform (Circle, not CVI's medical software).
  • Limited built-in tools for community discovery and attracting new members in their community platform.
  • One Reddit user questioned the accuracy of AI software for cardiovascular reports, though another clarified the software is for imaging analysis, not report writing.

Based on reviews from: Indeed.com, CircleCVI.com, Reddit, Jobs.ca, G2.com, Financial Post, SourceForge, Capterra, accessdata.fda.gov, DAIC, AuntMinnie, MedAxiom, Thoma Bravo, Health AI Register

Last updated: 2026-10-23

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Press & Coverage

GlobeNewswire
Circle CVI joins EXIT-CVD research consortium to advance imaging-informed, personalized cardiovascular care across Europe
Circle CVI has announced its participation in EXIT-CVD, a five-year European research project involving 42 public and private partners across 17 countries, aiming to transform cardiovascular disease detection, monitoring, and treatment. Circle CVI will contribute its expertise in AI-enabled cardiovascular MR and CT image analysis through its cvi42 platform.
2026-10
GlobeNewswire
Circle CVI Advances Cardiovascular Imaging Innovation with cvi42 v6.5
Circle CVI released cvi42 v6.5, the latest version of its cardiovascular imaging platform, introducing workflow automation, reporting enhancements, and platform improvements. New capabilities include automated 4D Flow preprocessing, streamlined CT workflow, and enhanced reporting to help clinicians move from acquisition to insight faster.
2026-08
DAIC (Diagnostic and Interventional Cardiology)
Circle CVI Expands Platform with Advanced Vascular CT Capabilities
Circle CVI expanded its cvi42 cardiovascular imaging platform to include advanced Vascular CT analysis through a collaboration with Astute Imaging. This integration allows clinicians to analyze complex vascular anatomy for diagnosis, endovascular procedure planning, and post-treatment surveillance within the same platform used for cardiac imaging.
2026-03
Circle CVI (Press Release)
Circle CVI Announces FDA Clearance for cvi42 | Plaque for Coronary Artery Disease Evaluation
Circle CVI announced that its cvi42 | Plaque solution received 510(k) clearance from the U.S. FDA, making it available for clinical use in the United States. This AI-enabled solution allows clinicians to perform comprehensive coronary plaque analysis directly on-premise, enhancing diagnostic workflows and patient care.
2025-10
Applied Radiology
FDA Clears Circle CVI's On-Premise AI Tool for Coronary Plaque Analysis
Circle CVI received FDA 510(k) clearance for cvi42 | Plaque, an AI-powered, on-premise software solution for coronary plaque analysis. This tool enables detailed coronary computed tomography angiography (CCTA) analysis in-house, offering autonomy and precision for cardiac imaging teams.
2025-10
OneMedNet
OneMedNet initiates new Subscription Revenue model in partnership with Circle CVI
OneMedNet Corporation announced a long-term strategic partnership with Circle CVI, where Circle CVI will leverage OneMedNet's iRWD™ platform to access diverse and regulatory-grade imaging, ECG, and other cardiovascular datasets. This collaboration aims to drive innovation in cardiac diagnostics, treatment planning, and AI model development.
2025-08
AuntMinnie
Circle Cardiovascular secures $16M in financing
Circle Cardiovascular Imaging secured $16 million in financing from private equity firms Kayne Anderson Capital Advisors and Yaletown Partners. The funds are intended to market its cardiovascular imaging software suite and further develop software modules for 4D flow MRI, CT, TAVI, and mitral and interventional cardiology.
2018-05
Accelerate Fund
Circle Cardiovascular Imaging Inc. was acquired by U.S. private equity firm Thoma Bravo LP in March 2022.
Circle Cardiovascular Imaging Inc. was acquired by U.S. private equity firm Thoma Bravo LP in March 2022. Founded in 2007, Circle Cardiovascular Imaging develops advanced post-processing software for the cardiac imaging industry.
2022-03

Frequently Asked Questions

Circle CVI's flagship product is cvi42, a unified platform designed for comprehensive cardiovascular imaging analysis. It offers tools for cardiac MR, cardiac CT, vascular CT, structural heart, electrophysiology, and neurovascular CT, aiming to cover the full spectrum of cardiovascular disease management from prevention to follow-up.
Circle CVI integrates advanced AI models into its cvi42 platform to automate tasks such as segmentation, contouring, and quantitative measurements across cardiac MRI and CT studies. This AI processing occurs within the customer's secure environment, ensuring data privacy and security.
For cardiac MRI, cvi42 provides AI-based contouring for quantifying cardiac function, flow, and assessing tissue abnormalities. For cardiac CT, it offers dedicated tools for coronary artery disease assessment, including AI-automated coronary lumen and wall segmentation, detailed plaque analysis (calcified, non-calcified, low-attenuation), and functional analysis like CT Strain (for research use only).
Yes, Circle CVI has expanded its cvi42 platform to include advanced Vascular CT analysis, integrating AI-driven technology for analyzing complex vascular anatomy, aiding in diagnosis, endovascular procedure planning, and post-treatment surveillance. The platform also offers neuro CT analysis, and for treatment planning, it provides fast and effective tools for structural heart interventions like Left Atrial Appendage Closure, Aortic, and Mitral valve replacement.
Circle CVI holds globally recognized ISO 13485:2016 and MDSAP certificates. Their quality system aligns with global medical device regulations, including European Medical Device Regulation (EU) 2017/745, Australian Therapeutic Goods (Medical Devices) Regulations, and U.S. FDA Quality Management System Regulation (QMSR) - 21 CFR Part 820.
Circle CVI's AI framework ensures that all processing occurs within the customer's secure environment, with imaging data and derived outputs remaining on local infrastructure. The AI models are pre-trained and 'frozen,' meaning they do not learn from customer data or transmit patient information externally, thus aligning with hospital IT policies and data governance requirements.
Circle CVI collaborates with various industry partners, including GE HealthCare and Siemens Healthineers, to integrate its cvi42 platform into existing workstations and systems. They also participate in large research consortiums like EXIT-CVD, co-funded by the European Union, to advance imaging-informed cardiovascular care. Additionally, they partner with companies like Aidoc to expand their neurosciences portfolio.
Circle CVI aims to provide an exceptional customer experience, with testimonials highlighting their intuitive post-processing analysis, ease of communicating findings, and great customer service. They also offer various deployment options for flexibility and reduced maintenance for end-users.

Comparisons

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