Phase III clinical trial to evaluate the diagnostic accuracy of QFR

Phase III clinical trial to evaluate the diagnostic accuracy of QFR (Quantitative Flow Ratio) using online measurement

Status

Active, not recruiting

Phases

Phase 3

Study type

Interventional

Source

JPRN

Registry ID

JPRN-jRCT2032210032

Enrollment

191

Registered

2021-04-12

Start date

2021-05-25

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

Stable angina or stenosis after AMI

Interventions

FFR will be measured during coronary angiography or coronary intervention in the patients who gave written consent. QFR will be measured by a certified user for all vessels for which FFR assessment is

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: - Patients with stable angina or patients who undergo a secondary assessment of stenosis after AMI - 20 years of age or older - Patients who can give written consent to the participation

Exclusion criteria

Exclusion criteria: - Patients who had myocardial infarction within 72 hours - Patients with severe asthma or severe chronic obstructive pulmonary disease - Patients with severe heart failure

Design outcomes

Primary

Measure	Time frame
Evaluate the diagnostic accuracy of QFR with FFR as gold standard, and compare the diagnostic accuracy of QFR with that of anatomical assessment by QCA.	—

Contacts

Public ContactYuko van Schaik-Yamamoto

Medis medical imaging systems

YVanschaik@medisimaging.com+81-3-6778-2589

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026