Assessment of Coronary Artery Disease by Hybrid PET/CT
There have been many advances in the test used to look for heart disease. An example of this newer technology is the Multislice CT scan (MSCT) and Positron Emission Tomography (PET) scans.
The use of this type of combined scan may show early coronary artery disease or the degree of damaged heart muscle form a heart attack with a single exam. It may help doctors to know who might benefit from heart surgery or angioplasty to increase the blood flow to the heart. This type of detailed images has previously been available only through cardiac catheterization.
|Study Design:||Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Diagnostic
|Official Title:||Assessment of Coronary Flow Reserve and CT Angiography By Hybrid PET/CT: Relation to Clinically Indicated SPECT Studies|
- Comparison of Rubidium PET and SPECT parameters (ejection fraction, left ventricular end diastolic and end diastolic function volumes)
- Comparison of wall motion scoring on Rubidium PET and SPECT
- Comparison of magnitude of defects on Rubidium PET, SPECT and CT angiography
|Study Start Date:||March 2006|
|Study Completion Date:||April 2008|
|Primary Completion Date:||April 2008 (Final data collection date for primary outcome measure)|
Advances in Non-invasive Multislice CT Imaging: Multislice CT (MSCT) and PET imaging are becoming more widely available and more useful in cardiac assessment. MSCT provides quantification of coronary calcium as well as information about the structures of the coronary vessel walls and atherosclerotic plaques. Multiple studies have demonstrated that MSCT provides information on coronary artery stenosis comparable to that obtained from invasive coronary angiography. PET imaging provides functional data via the measurement of coronary flow reserve (CFR). CFR is a quantitative measure of the increase in coronary blood flow in response to vasodilation; normal coronary flow is able to augment by three- to four-fold; diseased coronary arteries show less ability to increase flow, i.e. less CFR. Assessment of CFR yields functional information about the significance of coronary disease and is often used clinically in conjunction with anatomic imaging to identify early atherosclerosis. There is no current data evaluating the incremental value of hybrid PET/CT assessment of CFR and coronary anatomy in relation to SPECT studies in the clinical setting.
|United States, Maryland|
|University of Maryland Medical Center|
|Baltimore, Maryland, United States, 21201|
|Principal Investigator:||Vasken Dilsizian, M.D.||University of Maryland|