Assessment of Myocardial Viability Using Multidetector Computed Tomography
To perform a comprehensive evaluation of multidetector CT myocardial enhancement patterns in patients with an acute ST elevation MI. In particular we plan to assess the relationship between regions with early hypoperfusion and/or late hyperenhancement, and myocardial viability.
|Study Design:||Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: Single Blind
Primary Purpose: Diagnostic
|Official Title:||Non-Invasive Assessment of Myocardial Viability Using Multidetector Computed Tomography Post Acute Myocardial Infarction|
- Prediction of viability from myocardial enhancement patterns
|Study Start Date:||January 2006|
|Study Completion Date:||May 2008|
|Primary Completion Date:||August 2007 (Final data collection date for primary outcome measure)|
20 patients admitted to ICCU with ST elevation MI, and treated with primary angioplasty on admission, will undergo between day 2 and 7 post-MI the following exams: a) multidetector CT: regular scan plus late scan at 10 minutes, to evaluate coronary arteries, regional function and myocardial enhancement, b) echocardiography with echo-contrast to evaluate function and size of abnormally contracting region and remodeling, c) nuclear studies: rest early and late Thallium SPECT, to evaluate perfusion and viability. At 3 months a second echo will be performed to assess recovery of abnormal segments. The perfusion defects on MSCT will be compared with the other modalities and at 3 months will be used to evaluate recovery of myocardial function i.e. viability. Parameters that will be evaluated include opacity of hypoenhanced segments, ratio of normal to abnormal segments, change in opacity between early and late scans, size and transmurality of hypoenhanced segments, and their relation to regional contraction.
|Rambam Medical Center|
|Haifa, Israel, 31096|
|Principal Investigator:||Jonathan Lessick, MD DSc||Rambam Health Care Campus|