Cleerly ISCHEMIA vs ZEUS System

Similar category, different focus. These tools serve overlapping but distinct needs. Comparability 60/100 Comparability is an AI-graded 0–100 score of how directly these two tools compete — higher means a more apples-to-apples comparison.
by Cleerly
VS
by iRhythm Technologies

AI Verdict

These tools are adjacent competitors within the broader cardiology AI landscape, but serve distinct diagnostic purposes. Cleerly ISCHEMIA focuses on analyzing CCTA scans to detect coronary artery ischemia and characterize plaque, aiding in the diagnosis of structural heart disease. In contrast, the ZEUS System analyzes ECG data from wearable biosensors to detect and characterize arrhythmias, addressing electrical heart conditions.

Choose Cleerly ISCHEMIA if…

Choose Cleerly ISCHEMIA if you need a non-invasive, detailed assessment of coronary artery disease, particularly when evaluating the likelihood of ischemia at a vessel level. This tool is ideal for patients undergoing CCTA scans who require comprehensive plaque characterization, stenosis severity assessment, and functional insights to guide personalized treatment strategies for heart disease.

View Cleerly ISCHEMIA →

Choose ZEUS System if…

Choose the ZEUS System if you require long-term, continuous cardiac monitoring to detect and characterize arrhythmias, such as Atrial Fibrillation. This system is best suited for patients experiencing intermittent symptoms or those needing extended surveillance for suspected or known rhythm disorders, providing AI-powered analysis of ECG data from wearable biosensors.

View ZEUS System →

Reviewed by Pouyan Golshani, MD — Interventional Radiologist

Quick Comparison

Feature Cleerly ISCHEMIA ZEUS System
Pricing Unknown Not disclosed
Deployment Web-based solution Cloud-based (AWS EC2 platform), no on-premise hardware.
BAA Available Yes AI-estimated Yes AI-estimated
FDA Status Cleared AI-estimated Cleared AI-estimated
HIPAA Yes AI-estimated Yes AI-estimated

Head-to-Head

AI-generated assessment across six dimensions based on each tool's documented features and compliance posture. Grounded in public data — not a substitute for hands-on evaluation.

Usability

ZEUS System

Tool B (ZEUS System) offers a 'wear and forget' patient experience with its Zio patch, enhancing patient compliance and ease of use for long-term monitoring. Its robust HL7-based EHR integration, including specific support for Epic via Aura, streamlines clinical workflows from patient registration to report interpretation. While Tool A (Cleerly ISCHEMIA) provides interactive web-based reports and PowerScribe integration, Tool B's broader patient and system-level usability, particularly its seamless EHR integration, gives it an edge.

Clinical Value

Cleerly ISCHEMIA

Tool A (Cleerly ISCHEMIA) provides a comprehensive, non-invasive '3-in-1 approach' to assess atherosclerosis, stenosis, and ischemia from a single CCTA scan, including non-invasive FFR estimation and detailed plaque characterization. Clinical studies show it significantly reduces the need for further invasive testing and increases the use of preventive medications. While Tool B (ZEUS System) offers high diagnostic yield for arrhythmias, Cleerly ISCHEMIA's ability to provide detailed anatomical and functional insights for CAD from a single non-invasive test represents a more transformative impact on diagnostic pathways and treatment planning.

Pricing & Value

Cleerly ISCHEMIA

Both tools have opaque pricing, requiring direct contact for details. However, Tool A (Cleerly ISCHEMIA) has established Category I CPTu00ae codes (75580 for FFR estimation and 75577 for plaque analysis effective 2026) for reimbursement, providing a clear pathway for providers to bill for the service. This transparency in reimbursement, even without specific pricing, offers a stronger value proposition for healthcare systems compared to Tool B (ZEUS System), which, despite being described as 'cost-effective' and having favorable cost-effectiveness study results, lacks specific billing codes in the provided information.

Enterprise Readiness

ZEUS System

Both tools are FDA-cleared, HIPAA compliant, and offer BAAs. Tool B (ZEUS System) explicitly highlights '450+ integrations inclusive of all major ambulatory EHR systems' and specific integration with Epic via the Aura network, simplifying implementation for large health systems. It also emphasizes a 'highly scalable' and 'highly durable, geographically distributed architecture' with 'redundant systems'. While Tool A (Cleerly ISCHEMIA) integrates with PowerScribe, Tool B's broader EHR integration capabilities and explicit scalability claims make it more ready for diverse enterprise environments.

Innovation

Cleerly ISCHEMIA

Tool A (Cleerly ISCHEMIA) demonstrates greater innovation by non-invasively estimating fractional flow reserve (FFR) and providing detailed coronary plaque characterization (volume, type, location) directly from CCTA scans. This capability offers a 'novel care paradigm' by deriving functional insights from an anatomical scan, potentially replacing more invasive or additional stress tests. While Tool B (ZEUS System) leverages AI for long-term arrhythmia detection from wearables, the core concept of continuous ECG monitoring is more established, making Cleerly ISCHEMIA's approach a more disruptive advancement.

Support & Docs

ZEUS System

Tool B (ZEUS System) provides comprehensive support, including readily available 'Instructions for Use' documents in multiple languages and 24/7 customer support via phone. It also offers a 'Patient Support & FAQs' and a 'Clinical Resource Center' for healthcare professionals. Tool A (Cleerly ISCHEMIA) offers client support via a form for existing users, but lacks the explicit detail on 24/7 availability or the breadth of readily accessible documentation that Tool B provides.

Feature-by-Feature

Detail beyond the Quick Comparison summary. For pricing, deployment, BAA, FDA, and HIPAA see the Overview tab.

Feature Cleerly ISCHEMIA ZEUS System
Tool Name Cleerly ISCHEMIA ZEUS System
Company Cleerly iRhythm Technologies
Primary Data Input CCTA scans ECG data from wearable biosensors
Key Functionality Non-invasive determination of coronary artery ischemia at a vessel level; coronary plaque characterization; stenosis severity assessment Detection and characterization of arrhythmias like Atrial Fibrillation; continuous ECG monitoring
Specialties Cardiology, Radiology Cardiology, Family Medicine, Internal Medicine
Integration Integration with PowerScribe via API HL7-based EHR integration; Integration with Zio Watch and Zio monitors

Videos

Demos, reviews, and walkthroughs featuring Cleerly ISCHEMIA and ZEUS System.

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Frequently Asked Questions

Cleerly ISCHEMIA is designed to non-invasively determine the likelihood of coronary artery ischemia at a vessel level by analyzing CCTA scans, aiding in the diagnosis and treatment planning for heart disease. In contrast, the ZEUS System by iRhythm Technologies focuses on analyzing ECG data from wearable biosensors for long-term continuous cardiac monitoring, primarily to detect and characterize arrhythmias like Atrial Fibrillation.
Cleerly ISCHEMIA analyzes Coronary Computed Tomography Angiography (CCTA) scans to provide insights into coronary artery disease, including plaque characterization and stenosis assessment. The ZEUS System by iRhythm Technologies processes ECG (electrocardiogram) data collected from wearable biosensors for cardiac rhythm analysis.
Cleerly ISCHEMIA provides vessel-level ischemia likelihood, non-invasive fractional flow reserve (FFR) estimation, coronary plaque characterization (volume, type, location), and stenosis severity assessment, presented in comprehensive interactive web-based reports with 3D digital models. The ZEUS System offers AI-powered arrhythmia detection, continuous ECG monitoring for up to 14 days, and preliminary report generation for physicians, including the detection and characterization of Atrial Fibrillation. [Tool B description]
Cleerly ISCHEMIA offers integration with PowerScribe via an API for enhanced reporting workflows. [Tool A description] The ZEUS System supports HL7-based EHR integration and is designed to integrate with Zio Watch and Zio monitors for data acquisition. [Tool B description]
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