Imbio PHA (4.0.0) vs Tempus ECG-Low EF

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 Imbio (a subsidiary of 4DMedical)
VS
by Tempus

AI Verdict

Imbio PHA analyzes CT scans to assess right ventricular dilation and aid in diagnosing pulmonary embolism and hypertension, providing detailed measurements. In contrast, Tempus ECG-Low EF analyzes ECGs to detect signs of low left ventricular ejection fraction, assisting in identifying heart failure risk. While both are cardiology AI tools, they utilize different data types and focus on distinct cardiac conditions and diagnostic pathways.

Choose Imbio PHA (4.0.0) if…

Choose Imbio PHA if your clinical workflow involves CT pulmonary angiogram (CTPA) scans and you require automated, rapid assessment of right ventricular dilation. This tool is ideal for aiding in the diagnosis and risk stratification of patients with suspected pulmonary embolism or hypertension by providing precise cardiac measurements and ratios from CTPA images.

View Imbio PHA (4.0.0) →

Choose Tempus ECG-Low EF if…

Choose Tempus ECG-Low EF if you are looking to leverage standard 12-lead ECG recordings for early identification of patients at risk for heart failure due to low left ventricular ejection fraction (LVEF ≤40%). This AI-powered software is best suited for screening patients aged 40 and older in settings like emergency medicine or internal medicine to prompt further cardiac evaluation.

View Tempus ECG-Low EF →

Reviewed by Pouyan Golshani, MD — Interventional Radiologist

Quick Comparison

Feature Imbio PHA (4.0.0) Tempus ECG-Low EF
Deployment Cloud (AWS) or On-premise (VMware) or via partners (Nuance, Aidoc, Siemens Syngo.via, TeraRecon, FerrumHealth, Flywheel). Integrates with current ECG platforms and electronic health records (EHRs).
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

Imbio PHA (4.0.0)

Imbio PHA integrates seamlessly into existing radiology workflows, providing rapid, fully-automated assessment and delivering annotated DICOM images and PDF reports directly to PACS, enhancing the radiologist's visual information and efficiency. While Tempus ECG-Low EF offers a simple binary output, it lacks a dedicated user interface and relies entirely on integration with other systems for result presentation.

Clinical Value

Tempus ECG-Low EF

Tempus ECG-Low EF leverages a widely available and inexpensive diagnostic tool (ECG) to screen for low LVEF, a critical indicator for heart failure, enabling early identification at scale for a prevalent condition. While Imbio PHA provides valuable quantitative diagnostic and risk stratification from CT imaging, Tempus's approach offers a broader and more accessible impact for initial risk identification in a larger patient population.

Pricing & Value

Tempus ECG-Low EF

Both tools require direct contact for pricing, making a direct cost comparison impossible. However, Tempus ECG-Low EF gains a significant advantage from the recent CMS decision to include AI-ECG technology in its 2025 reimbursement schedule, which provides a clear pathway for reimbursement and enhances its overall value proposition and accessibility for healthcare facilities.

Enterprise Readiness

Imbio PHA (4.0.0)

Both tools are FDA-cleared, HIPAA compliant, and offer BAAs, establishing a strong foundation for enterprise use. Imbio PHA explicitly provides flexible deployment options, including cloud, on-premise, or via partners, and details its integration with native DICOM tools and workflows through its Core Computing Platform (ICCP), offering greater adaptability for diverse IT infrastructures. Tempus ECG-Low EF mentions integration but with less specific detail on technical architecture and deployment flexibility.

Innovation

Tempus ECG-Low EF

Tempus ECG-Low EF demonstrates significant innovation by applying AI to standard, inexpensive 12-lead ECGs to detect signs of low LVEF, a critical indicator for heart failure, enabling widespread early detection and intervention. The algorithm was trained on a massive dataset of over 930,000 ECGs, and Tempus has a track record with a second FDA-cleared ECG-AI device, highlighting its leadership in this area. Imbio PHA innovates by automating complex quantitative measurements from CT, but Tempus's approach leverages a more ubiquitous and accessible modality for population-level screening.

Support & Docs

Imbio PHA (4.0.0)

Imbio PHA offers clear support channels via phone and email, provides user manuals and product documentation upon request, and has an online FAQ section covering clinical and technical aspects. While Tempus provides customer support for billing and general inquiries, and documentation is implied, Imbio's resources appear more explicitly structured and readily accessible for product-specific user support.

Feature-by-Feature

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

Feature Imbio PHA (4.0.0) Tempus ECG-Low EF
Name Imbio PHA (4.0.0) Tempus ECG-Low EF
Input Data Type CT pulmonary angiogram (CTPA) scans 12-lead ECG recordings
Primary Analysis Focus Assesses potential right ventricular dilation and aids in diagnosis/risk stratification of pulmonary embolism and hypertension Detects signs associated with low left ventricular ejection fraction (LVEF u226440%)
Key Outputs/Measurements Automated measurement of right/left ventricle and main pulmonary artery/aorta diameters, RV/LV and PA/Ao ratios, annotated DICOM images, PDF summary reports Binary output (Low LVEF Detected / Not Detected)
Specialties Cardiology, Pulmonology, Radiology Cardiology, Emergency Medicine, Internal Medicine
Target Patient Population Not specified Patients 40 years or older at risk of heart failure

Videos

Demos, reviews, and walkthroughs featuring Imbio PHA (4.0.0) and Tempus ECG-Low EF.

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Frequently Asked Questions

Imbio PHA (4.0.0) analyzes CT pulmonary angiogram (CTPA) scans to measure cardiac structures. Tempus ECG-Low EF analyzes resting, non-ambulatory 12-lead ECG recordings.
Imbio PHA (4.0.0) assesses potential right ventricular dilation and aids in the diagnosis and risk stratification of pulmonary embolism and hypertension. Tempus ECG-Low EF detects signs associated with low left ventricular ejection fraction (LVEF u226440%) in patients 40 years or older at risk of heart failure.
Imbio PHA (4.0.0) generates automated measurements of right and left ventricle diameters, main pulmonary artery and aorta diameters, calculates RV/LV and PA/Ao ratios, and provides annotated DICOM images and summary PDF reports. Tempus ECG-Low EF provides a binary output (Low LVEF Detected / Not Detected) to aid clinicians in further evaluation.
Imbio PHA (4.0.0) is intended for Cardiology, Pulmonology, and Radiology. Tempus ECG-Low EF is designed for Cardiology, Emergency Medicine, and Internal Medicine.
Imbio PHA (4.0.0) measures right and left ventricle diameters and calculates RV/LV ratios, but does not directly provide ejection fraction. Tempus ECG-Low EF detects signs associated with low LVEF (u226440%) and provides a binary output, rather than a quantitative LVEF measurement itself.

Backers

Who funded each tool's parent company.

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