|ECR 2019 / C-1458|
|Lights and shadows of Cardiac MR Imaging at 3T: quality assessment and comparison with 1.5T|
Methods and materials
We reviewed 3T-CMR scans of 190 patients; 60 patients also underwent at 1,5T CMR examination within 3 months. Using Cvi42 System we evaluated the agreement between automatic and manual measurements of Cardiac Volumes and Late Gadolinium Enhancement (LGE), comparing 3T vs 1.5T.
We evaluated the image quality of different sequences used at 3T CMR: cine SSFP, LGE, first-pass perfusion, T1- and T2-weighted images.
Image quality of these sequences were analysed using a numerical scale (score 1-4) with lower score indicating better image quality. Image quality was then related to patient’s BMI.
35 patients with CMR examination at 1,5T and 3T had a story of previous acute myocardial ischemia; in addition, in this group quantitative parameters were measured to evaluate image quality such as the ratio between scar tissue signal intensity (SI) and normal myocardium SI for LGE images and the ratio between normal-perfusion and hypoperfusion myocardium SI during first pass for the perfusion.