Would the best solution be to average the frames of the first file or can I specify just one frame? Corinna

On Mon, Jul 11, 2011 at 1:17 PM, Corinna Bauer corinnab83@gmail.com wrote:

Looks like it is because one of the files has multiple frames.

mri_info first file:

Volume information for wm.reg.pet.mgz type: MGH dimensions: 256 x 256 x 256 x 6 voxel sizes: 1.0000, 1.0000, 1.0000 type: FLOAT (3) fov: 256.000 dof: 0 xstart: -128.0, xend: 128.0 ystart: -128.0, yend: 128.0 zstart: -128.0, zend: 128.0 TR: 0.00 msec, TE: 0.00 msec, TI: 0.00 msec, flip angle: 0.00 degrees nframes: 6 PhEncDir: UNKNOWN ras xform present xform info: x_r = -1.0000, y_r = 0.0000, z_r = 0.0000, c_r = -4.7658 : x_a = 0.0000, y_a = 0.0000, z_a = 1.0000, c_a = 75.9533 : x_s = 0.0000, y_s = -1.0000, z_s = 0.0000, c_s = 4.7458

talairach xfm : /home/icsapo/proc/bu/013_S_0860/mri/transforms/talairach.xfm Orientation : LIA Primary Slice Direction: coronal

voxel to ras transform: -1.0000 0.0000 0.0000 123.2342 0.0000 0.0000 1.0000 -52.0467 0.0000 -1.0000 0.0000 132.7458 0.0000 0.0000 0.0000 1.0000

voxel-to-ras determinant -1

ras to voxel transform: -1.0000 0.0000 0.0000 123.2342 -0.0000 -0.0000 -1.0000 132.7458 -0.0000 1.0000 -0.0000 52.0467 0.0000 0.0000 0.0000 1.0000

and second file:

Volume information for wm.pet_binarized.mgz type: MGH dimensions: 256 x 256 x 256 voxel sizes: 1.0000, 1.0000, 1.0000 type: INT (1) fov: 256.000 dof: 0 xstart: -128.0, xend: 128.0 ystart: -128.0, yend: 128.0 zstart: -128.0, zend: 128.0 TR: 0.00 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 = -1.0000, y_r = 0.0000, z_r = 0.0000, c_r = -4.7658 : x_a = 0.0000, y_a = 0.0000, z_a = 1.0000, c_a = 75.9533 : x_s = 0.0000, y_s = -1.0000, z_s = 0.0000, c_s = 4.7458

talairach xfm : /home/icsapo/proc/bu/013_S_0860/mri/transforms/talairach.xfm Orientation : LIA Primary Slice Direction: coronal

voxel to ras transform: -1.0000 0.0000 0.0000 123.2342 0.0000 0.0000 1.0000 -52.0467 0.0000 -1.0000 0.0000 132.7458 0.0000 0.0000 0.0000 1.0000

voxel-to-ras determinant -1

ras to voxel transform: -1.0000 0.0000 0.0000 123.2342 -0.0000 -0.0000 -1.0000 132.7458 -0.0000 1.0000 -0.0000 52.0467 0.0000 0.0000 0.0000 1.0000

On Mon, Jul 11, 2011 at 12:51 PM, Rudolph Pienaar < rudolph@nmr.mgh.harvard.edu> wrote:

...

(forgot to cc the list)...

In general, that error means the number of elements in your first input is not equal to the number of element in your second.

Can you run the command and copy-paste the output into an email? Also, run 'mris_calc' with '--verbosity 10'. That will print out additional (useful) information.

On 7/11/11 12:25 , Corinna Bauer wrote:

...

When running fscalc, I get the following error on some of my subjects but not all of them,

mris_calc: Sorry, but I seem to have encountered an error. While checking on input filetype sizes, I found a size mismatch, i.e. len(input1)!=len(input2)

Any suggestions?

Thanks, Corinna

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