Validation of Murray Law-Based Quantitative Flow Ratio Derived from Coronary CT Angiography after PCI with Stent Implantation

Validation of Murray Law-Based Quantitative Flow Ratio Derived from Coronary CT Angiography after PCI with Stent Implantation - Validation of Murray Law-Based Quantitative Flow Ratio Derived from Coronary CT Angiography after PCI with Stent Implantation

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000058432

Enrollment

Registered

2025-08-01

Start date

2025-08-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

coronary artery disease

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Patients with suspected recurrent or residual angina after coronary stent implantation who underwent coronary computed tomography angiography (cCTA). Patients who had fractional flow reserve (FFR) measured using a pressure wire in the stented vessel within 3 months before or after the cCTA.

Exclusion criteria

Exclusion criteria: Patients with chronic total occlusion (CTO) lesions Patients with acute myocardial infarction (AMI) within the past 2 months Patients who underwent PCI or coronary artery bypass grafting (CABG) on the target vessel between cCTA and FFR Patients whose cCTA images were deemed uninterpretable Patients who declined participation in the study based on publicly disclosed information

Design outcomes

Primary

Measure	Time frame
Diagnostic performance of Murray law-based quantitative flow ratio derived from coronary computed tomography angiography in coronary vessels after stent implantation using fractional flow reserve as the reference standard	—

Countries

Japan

Contacts

Public ContactTakayoshi Toba

Kobe University Graduate School of Medicine Division of Cardiovascular Medicine, Department of Internal Medicine

taka0222@med.kobe-u.ac.jp078-382-5111

Outcome results