Fig. 1.

Segmentation of 1.5 T RT SA images using QMass: (a) After segmentation all images were grouped into individual heart beats to generate a complete stack for further evaluation. Example: in row 6 the end-diastolic image is in column 122, this contour was copied to column 117 as were all other end-diastolic contours. The end-systolic contours were processed in the same way: e.g. row 6: contours in column 133 were copied and inserted in column 127. (b,c) Endocardial borders are shown in red and epicardial borders are shown in green in a mid-ventricular slice for end-diastolic (b) and end-systolic (c) frames. Papillary muscles are excluded from mass (orange and purple).