An observational study in Coronary Artery Disease and Cardiac Perfusion, sponsored by Sheba Medical Center. Status unknown at 1 site in Israel. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2009-03-18.
Sponsored by Sheba Medical Center · Observational
This study is designed to determine the diagnostic value of adenosine cardiac magnetic resonance (CMR) when compared with SPECT.
The investigators hypothesized that adenosine CMR could detect ischemia and is not inferior to SPECT imaging. In addition stress adenosine cardiac MRI offers a "one stop shop" enabling evaluation of cardiac function, rest and stress perfusion and viability.
5,598 studies on the registry are indexed under Coronary Artery Disease; 957 are open to participants now.
This study's planned enrollment of 50 is below the median of 336 across 1,947 observational studies indexed under Coronary Artery Disease.
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patients undergoing SPECT stress imaging, for the evaluation of myocardial ischemia.
The study group will include patients with either normal undergoing SPECT stress imaging or with mild to severe ischemia, to include the entire spectrum of coronary artery disease.
Patients will be pre selected and evaluated by a non-dependent cardiologist in order to verify that patients in whom the repeat stress might pose a serious risk will be excluded from the study.
Exclusion Criteria:
patients undergoing SPECT stress imaging, for the evaluation of myocardial ischemia. The study group will include patients with either normal undergoing SPECT stress imaging or with mild to severe ischemia, to include the entire spectrum of coronary artery disease. Patients will be pre selected and evaluated by a non-dependent cardiologist in order to verify that patients in whom the repeat stress might pose a serious risk will be excluded from the study.
Procedure: SPECT Imaging · Procedure: Stress Adenosine CMR
Myocardial SPECT imaging will be performed 10-12 minutes after the stress injection of Tl-201, at 4 hours, and at 18-24 hours in patients with non-reversible or partially reversible defect on 4-hour imaging. Images will be obtained with a rotating single- or dual-head gamma camera equipped with low-energy high resolution collimators. Energy windows of 20% and 10% will be centered on the 70 KeV and 167 KeV peaks of Tl-201, respectively. Thirty images will be obtained (40 seconds each for the stress and 4-hour redistribution imaging, and 60 seconds each for the 18-24-hour imaging) over 180° extending from the 45° right anterior oblique to the 45° left posterior oblique projections.Localization of the disease in the left anterior descending artery (LAD), left circumflex (Cx) and right coronary artery (RCA) will be performed using a quantitative analysis software.
CMR will be performed using a 3-T scanner and a dedicated eight-element cardiac phased-array coil Cine CMR will be performed using steady state free precession in the short-axis, two chamber, three chamber and four-chamber, 8 mm thick, separated by 0-mm gaps. Adenosine perfusion CMR: Adenosine will be administered intravenously at 140 µg/kg/min over 6 min. Four minutes into the infusion (or earlier if angina is provoked), a bolus (0.1 mmol/kg at 5 ml/s) of Gadolinium DTPA will be administered. Patients will be instructed to hold their breath. Stress perfusion images will be acquired in the short axis plane (parameters and planning will be similar for stress and rest perfusion evaluation). The patients will be monitored by vector ECG, noninvasive sphygmomanometry, pulse oximetry and capnography.
Stress adenosine cardiac MRIis not inferior to SPECT imaging in diagnosing myocardial ischemia
Time frame: 1 year
This study is status unknown, as verified in Mar 2009. You cannot join it, but the record below documents what was studied.
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Sheba Medical Center