Stress Myocardial Perfusion MRI at 3.0T with Improved Spatial and Temporal Resolutions by Using B1-Insensitive Water-Suppression and K-T SENSE Acceleration.

shingo kato¹, Hajime Sakuma, Shinichi Takase, Motonori Nagata, Nanaka Ishida, Kakuya Kitagawa, Masaki Ishida, Masaaki Ito, Makoto Obara², Kan Takeda

Stress-rest myocardial perfusion MR images were acquired with high spatial resolution (<2mm) and temporal resolution (1-RR interval) by using k-t SENSE and 3.0T Imager. WET pulse was employed to obtain uniform 90 degree saturation in the increased B1 inhomogeneities at 3.0T., and to reduce beat-to-beat signal variation due to arrhythmia. In all 34 patients with suspected CAD who underwent the study, high resolution perfusion MR images were observed with reduced endocardial dark banding artifacts, allowing accurate detection of myocardial ischemia in patients with significant CAD with high sensitivity of 91.6% and specificity of 93.9%.