Tempus ECG-AF vs Viz RV/LV

Similar category, different focus. These tools serve overlapping but distinct needs. Comparability 65/100 Comparability is an AI-graded 0–100 score of how directly these two tools compete — higher means a more apples-to-apples comparison.
by Tempus AI, Inc.
VS
by Viz.ai

AI Verdict

Tool A (Tempus ECG-AF) is designed for proactive identification of patients at risk for future atrial fibrillation through 12-lead ECG analysis. Tool B (Viz RV/LV), conversely, focuses on acute pulmonary embolism risk stratification by automating RV/LV ratio measurements from CTPA scans. While both leverage AI in cardiology, their distinct data inputs (ECG vs. CTPA) and clinical objectives (AF risk prediction vs. acute PE assessment) make them suitable for different clinical workflows and patient populations.

Choose Tempus ECG-AF if…

Choose Tempus ECG-AF if your primary objective is to proactively identify patients aged 65 or older at an increased risk of developing new-onset atrial fibrillation within the next 12 months. This tool is ideal for integrating into routine cardiology, geriatrics, or internal medicine workflows to leverage standard 12-lead ECGs for earlier risk stratification and follow-up planning.

View Tempus ECG-AF →

Choose Viz RV/LV if…

Choose Viz RV/LV if you require rapid, automated right and left ventricular diameter measurements from CTPA scans for acute pulmonary embolism (PE) risk stratification. This solution is best suited for emergency medicine, pulmonology, or radiology departments where quick, accurate assessment of PE severity and seamless care team coordination are critical for managing patients with suspected PE.

View Viz RV/LV →

Reviewed by Pouyan Golshani, MD — Interventional Radiologist

Quick Comparison

Feature Tempus ECG-AF Viz RV/LV
Pricing Contact vendor Unknown
Deployment Software solution, integrated into healthcare facility systems with advanced cardiology algorithms. Cloud-based
BAA Available Yes AI-estimated Unknown
FDA Status Yes AI-estimated Cleared AI-estimated
HIPAA Yes AI-estimated Unknown

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

Viz RV/LV

Viz RV/LV (Tool B) is cloud-based and emphasizes mobile access, AI-powered alerts, and a HIPAA-compliant communication platform for care coordination, suggesting a highly interactive and accessible user experience. Tempus ECG-AF (Tool A) integrates into existing facility systems, which is good for workflow, but lacks the explicit mobile and communication features highlighted by Viz.ai.

Clinical Value

Tie

Both tools are FDA-cleared and address critical clinical needs. Tempus ECG-AF (Tool A) provides early identification of AF risk, a proactive measure for a chronic condition. Viz RV/LV (Tool B) offers rapid risk stratification for acute pulmonary embolism, a time-sensitive and life-threatening condition. Both provide crucial, actionable insights for clinical decision-making within their respective domains.

Pricing & Value

Tempus ECG-AF

Tempus ECG-AF (Tool A) provides clear financial transparency by stating CMS reimbursement availability (CPT 0764T and CPT 0765T) and a Medicare rate of $128.90, effective January 1, 2025. Viz RV/LV (Tool B) does not publicly disclose its pricing, making it difficult for healthcare providers to assess its immediate financial value without direct vendor engagement.

Enterprise Readiness

Viz RV/LV

Both tools are FDA-cleared, HIPAA compliant, and have BAAs, indicating strong foundational readiness. Viz RV/LV (Tool B) is cloud-based and presented as a 'seamless component of the Viz PE Solution,' suggesting a comprehensive, scalable platform approach for enterprise deployment, particularly in acute care workflows. Tempus ECG-AF (Tool A) integrates into existing systems, which is also valuable, but Viz.ai's broader solution integration and cloud-native approach offer a slight edge in modern enterprise scalability and deployment.

Innovation

Viz RV/LV

While Tempus ECG-AF (Tool A) innovates by predicting future AF risk from standard ECGs, Viz RV/LV (Tool B) combines automated critical measurements for acute PE risk stratification with real-time AI-powered alerts, mobile viewing, and a communication platform for care coordination. This integration of AI analysis with immediate, collaborative workflow tools for acute conditions represents a broader and more impactful innovation in clinical practice.

Support & Docs

Viz RV/LV

Viz.ai (Tool B) demonstrates more comprehensive and transparent support, offering 24/7/365 urgent phone support, a dedicated Help Center, Knowledge Base, and a Trust Center with detailed security and privacy documentation. Tempus AI (Tool A) provides general customer support via email and local reps, and mentions a 'Tempus Hub' and API documentation, but lacks the explicit, readily available, and extensive support resources highlighted by Viz.ai.

Feature-by-Feature

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

Feature Tempus ECG-AF Viz RV/LV
Tool Name Tempus ECG-AF Viz RV/LV
Company Tempus AI, Inc. Viz.ai
Description Tempus ECG-AF is an FDA-cleared AI-based algorithm that analyzes 12-lead ECG recordings to identify patients aged 65 or older at increased risk of developing atrial fibrillation/flutter (AF) within the next 12 months, supporting earlier identification and follow-up. Viz RV/LV by Viz.ai is an FDA-cleared AI algorithm that automates right and left ventricular diameter measurements from CTPA scans, providing a crucial RV/LV ratio for rapid pulmonary embolism risk stratification and enhanced care coordination within the Viz PE Solution.
Key Functionality AI-based algorithm for 12-lead ECG analysis; Detects signs associated with new onset Atrial Fibrillation (AF) within 12 months. Automated Right Ventricle (RV) to Left Ventricle (LV) ratio measurement; Analysis of volumetric CTPA acquisitions; AI algorithm for identification and measurement of heart ventricles.
Target Patient Population/Input Data Patients 65 years or older without pre-existing AF, pacemakers, ICDs, or recent cardiac surgery; analyzes 12-lead ECG recordings. Volumetric CTPA acquisitions for suspected pulmonary embolism detection.
Specialties Cardiology, Geriatrics, Internal Medicine Emergency Medicine, Pulmonology, Radiology

Videos

Demos, reviews, and walkthroughs featuring Tempus ECG-AF and Viz RV/LV.

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Frequently Asked Questions

Tempus ECG-AF is an AI-based algorithm designed to analyze 12-lead ECG recordings to identify patients aged 65 or older at increased risk of developing atrial fibrillation/flutter (AF) within the next 12 months. Viz RV/LV is an AI algorithm that automates right and left ventricular diameter measurements from CTPA scans to provide a crucial RV/LV ratio for rapid pulmonary embolism (PE) risk stratification.
Tempus ECG-AF analyzes 12-lead ECG recordings, specifically compatible with FDA authorized resting 12-lead ECGs from GE Medical Systems and Philips Medical Systems. Viz RV/LV requires volumetric CTPA acquisitions for its automated right and left ventricular diameter measurements.
Tempus ECG-AF is intended for patients 65 years or older without pre-existing AF, pacemakers, ICDs, or recent cardiac surgery. Viz RV/LV is utilized within the Viz PE Solution for patients with suspected pulmonary embolism.
Yes, CMS reimbursement is available for Tempus ECG-AF, utilizing CPT 0764T and CPT 0765T to APC 5734, with a Medicare rate of $128.90 effective January 1, 2025. Pricing details for Viz RV/LV are not publicly available.
Tempus ECG-AF is primarily used in Cardiology, Geriatrics, and Internal Medicine. Viz RV/LV is primarily utilized in Emergency Medicine, Pulmonology, and Radiology.

Backers

Who funded each tool's parent company.

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