QFR vs VX1+
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.
AI Verdict
QFR is designed for cardiologists to assess coronary artery lesions and flow ratios using X-ray angiographic images, primarily for diagnostic and pre-interventional planning. In contrast, VX1+ assists electrophysiologists in real-time identification of abnormal electrograms during cardiac ablation procedures for arrhythmias. While both are AI-powered tools within cardiology, they target distinct sub-specialties and phases of patient care.
Choose QFR if…
Choose QFR if you are a cardiologist needing to precisely assess the functional significance and anatomical characteristics of coronary artery lesions. This tool is ideal for detailed quantitative analysis and 3D reconstruction of coronary vessels from X-ray angiographic images, aiding in treatment planning for coronary artery disease.
View QFR →Choose VX1+ if…
Choose VX1+ if you are an electrophysiologist performing cardiac ablation procedures for atrial fibrillation or tachycardia and require real-time AI-powered guidance. This software excels at identifying abnormal electrograms and dispersed electrograms (DEs) during the procedure, helping to pinpoint optimal ablation targets.
View VX1+ →Reviewed by Pouyan Golshani, MD — Interventional Radiologist
Feature-by-Feature
Detail beyond the Quick Comparison summary. For pricing, deployment, BAA, FDA, and HIPAA see the Overview tab.
| Feature | QFR | VX1+ |
|---|---|---|
| Name | QFR | VX1+ |
| Company | QFR Solutions bv | Volta Medical |
| Description | FDA-cleared AI-powered medical software for the visualization and quantitative flow ratio (QFR) analysis of X-ray angiographic images of coronary vessel segments, aiding cardiologists in lesion assessment. | AI-powered software that assists electrophysiologists in real-time identification of abnormal electrograms during cardiac ablation procedures for atrial fibrillation and atrial tachycardia. |
| Primary Specialty | Cardiology | Cardiology |
| Key Feature 1 | Visualization of X-ray angiographic images | Real-time manual or automatic annotation of 3D anatomical and electrical maps of the human heart |
| Key Feature 2 | Quantitative Flow Ratio (QFR) assessment for functional significance | Identification of spatio-temporal dispersed electrograms (DEs) during AF and AT procedures |
Videos
Demos, reviews, and walkthroughs featuring QFR and VX1+.
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Frequently Asked Questions
QFR integrates with cath lab systems, allowing cardiologists to assess coronary lesion functional significance from X-ray angiographic images without invasive wires, streamlining pre-, during-, and post-PCI decision-making. VX1+ integrates with existing EP recording and 3D mapping systems, assisting electrophysiologists in real-time identification of abnormal electrograms to guide cardiac ablation procedures for atrial fibrillation and tachycardia.
QFR integrates with cath lab systems and can receive DICOM images from enterprise cath lab systems and PACS for both prospective and retrospective analysis. VX1+ is designed to integrate with specific existing EP recording and 3D mapping systems, such as Boston Scientific LabSystem Pro, GE HealthCare MacLab CardioLab EP Recording System, and Abbott EnSite X 3D mapping system, to provide real-time assistance during procedures.
QFR achieves high accuracy through AI-enabled end-diastolic frame selection, deep learning for precise alignment, and accurate anatomical quantification, demonstrating high diagnostic accuracy (92.4-92.7%) compared to FFR. VX1+ uses machine learning algorithms trained on large databases of expert-annotated electrograms for real-time identification of abnormal electrograms, with a 'Booster mode' for increased sensitivity, and has shown robust center-to-center standardization of ablation outcomes.
QFR is described as very easy and seamless to adopt, with studies indicating that initial training allows for quick attainment of maximal performance, and further practice primarily enhances analysis speed. VX1+ features a simple user interface with color coding for electrogram dispersion, designed for a fast learning curve and to reduce inter-operator variability.
QFR is specifically for interventional cardiologists to assess the functional significance of coronary vessel lesions from angiographic images, aiding in PCI planning and deferral of unnecessary procedures. VX1+ is tailored for electrophysiologists to assist in real-time identification of abnormal electrograms during cardiac ablation procedures for atrial fibrillation and atrial tachycardia.