Direct comparison of MR and CT perfusion utilizing a myocardial perfusion phantom

Background Myocardial CT perfusion is a relatively new technique which enables the assessment of perfusion deficits through first pass imaging in combination with pharmacological stress. Comparison of CT and MR perfusion has been limited and in-vivo assessment is affected by physiological variability, acquisition timing during firstpass contrast perfusion and parameter selection. We utilized a myocardial perfusion phantom to precisely compare high resolution k-t SENSE MR perfusion with single phase CT perfusion under identical imaging conditions.