Dear Members, I have few basic questions. I am using Philips 1.5T for rsfMRI. I have scanned a subject for 8 min. I have given the details of aquisition parameters below. When TR is 2sec and scan time is 8 min (480 sec) the total volume should be 240. But I am getting only 120 volumes of images. Could you plz explain where I am going mistake or any other parameter affecting the scan time? "Repetition time (ms): 2000 Echo time[0] (ms): Echo time[1] (ms): 45 Inversion time (ms): Flip angle: 70 Number of averages: 1 Slice thickness (mm): 4 Slice spacing (mm): 4 Image columns: 64 Image rows: 64 Number of frames: Phase encoding direction: COL Voxel size x (mm): 3.4375 Voxel size y (mm): 3.4375 Number of volumes: 120 Number of slices: 35 Number of files: 4200 Number of frames: 0 Slice duration (ms) : 0 Volume interval (s): 4 Orientation: tra"