Coronary Artery Disease Clinical Trial
Official title:
Quantification of Myocardial Blood Flow Using Dynamic PET/CTA Fused Imagery to Determine the Physiological Significance of Specific Coronary Lesions.
Verified date | September 2023 |
Source | Emory University |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Observational |
This observational prospective clinical study is to develop software tools to fuse coronary anatomy data obtained from CT coronary angiography with dynamic PET data to noninvasively measure absolute myocardial blood flow, flow reserve and relative flow reserve across specific coronary lesions. Results will be compared to those obtained invasively in the catheterization laboratory.
Status | Completed |
Enrollment | 68 |
Est. completion date | June 30, 2023 |
Est. primary completion date | June 30, 2023 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years and older |
Eligibility | Inclusion Criteria: - Adult (=18 years of age) - as the research topic to be studied is irrelevant to children - Written consent form - Patients with prior dynamic PET or CCTA or ICA for any indications Exclusion Criteria: - Previous history of allergy to iodinated contrast - Previous CABG - Serum creatinine levels >1.8 mg/dl unless patient has end stage kidney disease, not producing any urine and dialysis - History of claustrophobia (CT tunnel length of more than 100 cm) - Significant arrhythmias or tachycardia - History of frequent asthma attacks or acting wheezing - Second- and third-degree heart block - Systolic blood pressure of < 90 mmHg - Heart failure with NYHA class III-IV at the time of the CCTA procedure. If it is deemed that, the heart failure has been resolved or the patient was incorrectly labeled as having heart failure the radiology physician in charge will verify the absence of Heart Failure at the time of CCTA and perform the procedure. - Recent myocardial infarction - If the patient has been diagnosed with unstable angina within 24 hours prior to CCTA, the patient will not be consented. If the patient does not have the diagnosis of unstable angina and is consented, the radiology physician in charge will verify the absence of unstable angina at the time of CCTA. - Patients enrolled and consented for the invasive measurements that at the time of catheterization exhibit severe vessel disease and/or obstructions that prevent the operator from safely conducting the measurements will be removed from the study; further research imaging sessions - if planned - will be canceled and patients indicated as "screen failure" in our enrollment log. |
Country | Name | City | State |
---|---|---|---|
Korea, Republic of | Chonnam National University | Gwangju | |
Korea, Republic of | Samsung Medical Center | Seoul | |
Korea, Republic of | Seoul National University Hospital | Seoul | |
United States | Emory Clinic | Atlanta | Georgia |
United States | Emory University Hospital | Atlanta | Georgia |
United States | Saint Francis Hospital & Heart Center | Roslyn | New York |
Lead Sponsor | Collaborator |
---|---|
Emory University | Chonnam National University Hospital, National Heart, Lung, and Blood Institute (NHLBI), Samsung Medical Center, Seoul National University |
United States, Korea, Republic of,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Myocardial blood flow (MBF) measurement comparing non-invasive to the traditional approaches | Myocardial blood flow (MBF) measured in milliliters per minute per gram of tissue is providing unique pathophysiologic and diagnostic information on the function of the coronary macro- and microcirculation. | Up to 3 months | |
Primary | Vessel-specific quantification of myocardial blood flow RFR | Ratio of absolute hyperemic MBFs (abnormal / normal) measured in mL/min/g. | Up to 3 months | |
Secondary | Absolute myocardial blood flow (MBF) measurement comparing non-invasive to the traditional approaches | Absolute myocardial blood flow (MBF) measured in ml/min/gm provides incremental diagnostic and prognostic information over relative perfusion alone. | Up to 3 months | |
Secondary | Myocardial flow reserve (MFR) measurement comparing non-invasive to the traditional approaches | Myocardial flow reserve (MFR) provide incremental diagnostic and prognostic information over relative perfusion alone. | Up to 3 months | |
Secondary | Fractional Flow Reserve (FFR) measurement comparing non-invasive to the traditional approaches | FFR calculates the maximum flow down a vessel in the presence of stenosis compared to maximum flow in the hypothetical absence of the stenosis. | Up to 3 months | |
Secondary | Stress myocardial blood flow (sMBF)/Regional myocardial blood flow (rMBF) ratio | Stress myocardial blood flow (sMBF)/Regional myocardial blood flow (rMBF) ratio will be calculated | Up to 3 months | |
Secondary | Distal/proximal pressure ratio | Distal/proximal pressure ratio will be calculated | Up to 3 months | |
Secondary | Discriminatory power of dPET/CTA. And FFR(CTA) | Predictive discriminatory power of each technique will be compared to ICA (FFR) | Up to 3 months |
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