Dear experts, Recently I run freesurfer longitudinal analysis (freesurfer-Linux-centos6_x86_64-stable-pub-v5.3.0), during the creation of the BASE, I get the following error "Volumes differ in geometry row=1 col=4 diff=4.745766(4.74577)". We did not change the protocol during the study period. I check the baseline and follow-up images with mri_info, it shows like this for baseline images . Volume information for K_EL03_1.nii.gz type: nii dimensions: 208 x 256 x 160 voxel sizes: 1.1719, 1.1719, 1.2000 type: FLOAT (3) fov: 243.750 dof: 0 xstart: -121.9, xend: 121.9 ystart: -150.0, yend: 150.0 zstart: -96.0, zend: 96.0 TR: 2400.00 msec, TE: 0.00 msec, TI: 0.00 msec, flip angle: 0.00 degrees nframes: 1 PhEncDir: UNKNOWN ras xform present xform info: x_r = 0.0000, y_r = 0.0000, z_r = 1.0000, c_r = 1.9559 : x_a = -1.0000, y_a = 0.0000, z_a = 0.0000, c_a = 24.3864 : x_s = 0.0000, y_s = 1.0000, z_s = 0.0000, c_s = -21.0540 Orientation : PSR Primary Slice Direction: sagittal
voxel to ras transform: 0.0000 0.0000 1.2000 -94.0441 -1.1719 0.0000 0.0000 146.2614 0.0000 1.1719 0.0000 -171.0540 0.0000 0.0000 0.0000 1.0000 voxel-to-ras determinant -1.64795 ras to voxel transform: -0.0000 -0.8533 -0.0000 124.809 <124.8097> -0.0000 -0.0000 0.8533 145.9661 0.8333 0.0000 0.0000 78.3701 0.0000 0.0000 0.0000 1.0000 > and for followup images:Volume information for K_EL03_2.nii.gz type: nii dimensions: 208 x 256 x 160 voxel sizes: 1.1719, 1.1719, 1.2000 type: FLOAT (3) fov: 243.750 dof: 0 xstart: -121.9, xend: 121.9 ystart: -150.0, yend: 150.0 zstart: -96.0, zend: 96.0 TR: 2400.00 msec, TE: 0.00 msec, TI: 0.00 msec, flip angle: 0.00 degrees nframes: 1 PhEncDir: UNKNOWN ras xform present xform info: x_r = 0.0000, y_r = 0.0000, z_r = 1.0000, c_r = -2.7898 : x_a = -1.0000, y_a = 0.0000, z_a = 0.0000, c_a = 17.2881 : x_s = 0.0000, y_s = 1.0000, z_s = 0.0000, c_s = -34.7603 Orientation : PSR Primary Slice Direction: sagittal voxel to ras transform: 0.0000 0.0000 1.2000 -98.7898 -1.1719 0.0000 0.0000 139.1631 0.0000 1.1719 0.0000 -184.7603 0.0000 0.0000 0.0000 1.0000 voxel-to-ras determinant -1.64795 ras to voxel transform: -0.0000 -0.8533 -0.0000 118.7526 -0.0000 -0.0000 0.8533 157.6622 0.8333 0.0000 0.0000 82.3249 0.0000 0.0000 0.0000 1.0000 I have no ideal what is going wrong. Please help. By the way I used dcm2nii Gui (compressed FSL 4DNIfTInii) convert dcm to nii.gz. Thanks, Yawu
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