Purpose: A rotating multi-segment slant-hole (RMSSH) collimator is able to provide much higher (∼3 times for four-segment collimator with 30° slant angle) sensitivity than a parallel-hole (PH) collimator with the similar spatial resolution for imaging small organs such as the heart and the breast. In this article, the authors evaluated the performance of myocardial perfusion SPECT (MPS) using a RMSSH collimator compared to MPS using the low-energy high-resolution parallel-hole collimators.
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