Diagnostic Accuracy of CT-FFR Compared to Invasive Coronar Angiography With Fractional Flow Reserve

Not Applicable

Completed

• Conditions: Coronary Disease
• Interventions: Diagnostic Test: CT-FFR; Diagnostic Test: Stress echocardiography

• Registration Number: NCT03045601
• Lead Sponsor: St. Olavs Hospital

Brief Summary

Invasive coronary angiography is currently considered gold standard in the assessment of coronary artery disease although the method has limitations. Most importantly invasive angiography only depicts coronary anatomy without determining its physiological significance i.e the likelihood that the stenosis impedes oxygen delivery to the heart muscle. Fractional flow reserve (FFR) is a catheterization technique for assessing the physiological significance of a coronary artery lesion during invasive coronary angiography. Coronary computed tomographic angiography (CCTA) is a noninvasive imaging test that has become an alternative route to diagnosis for patients with suspected coronary artery disease. Computational fluid dynamics combined with anatomical models based on CCTA scans allows determination of coronary flow and pressure, and has emerged as a promising diagnostic modality called CT-FFR. In this Project New Mathematical algorithms are developed for computation of CT-FFR. The main objective of this study is to determine the diagnostic accuracy of CT-FFR values obtained by the new method compared with invasive coronary angiography with fractional flow reserve and state-of-the-art dobutamin stress echocardiography.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2017-01-26
• Study First Submitted QC: 2017-02-03
• Study First Posted: 2017-02-07
• Study Start: 2017-02-21
• Status Verified: 2020-03
• Primary Completion: 2021-03-01
• Study Completion: 2021-03-01
• Last Update Submitted: 2021-03-08
• Last Update Posted: 2021-03-09

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 182

Inclusion Criteria

Not provided

Exclusion Criteria

• Patients with unstable coronary artery disease.
• Previously treated with PCI or coronary surgery.
• Severe renal impairment i.e. GFR <30ml / min
• Contrast allergy
• Contraindication to adenosine / nitroglycerin / beta-blocker
• BMI> 40
• Patients referred on the basis of technically unsuccessful CTA, motion artifact or similar

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
CT-FFR	CT-FFR	Analyse With New CT-FFR Method
Stress echocardiography	Stress echocardiography	Analyse With invasive FFR and stress echocardiography

Primary Outcome Measures

Name	Time	Method
CT- FFR values by New Method as a dichotomous variable	4 weeks	Determining the diagnostic accuracy of CT-FFR values obtained by the new method compared with invasive coronary angiography with fractional flow reserve
Worsening regional wall motion abnormality	4 weeks	Determining the diagnostic accuracy of invasive FFR with comprehensive stress echocardiographic techniques

Trial Locations

Locations (1)

St Olavs Hospital, Klinikk for hjertemedisin; 🇳🇴 Trondheim, Norway