converting in only 'x' or 'y' directions?

Short question: is it possible to choose in which direction to convert apart from z or all?

Long Q w problem:
I have 3D .nii files and I have coordinates (c1,c2,c3) of a centroid of an ROI.
I have sliced these files using med2image --reslice on each coord and then deleting files so I end up with only slice c1 in direction x, c2 in direction y and c3 in direction z. (Bit tedious but saving slices directly with itk does not work properly)

Sometimes a coordinate is bigger than the size of my .nii file in one of the dimensions med2image tries to slice in. Say coords of centroid = (80, 120 ,80) and .nii image size is (90, 140, 120). I want slice 80 in x, slice 120 in y and slice 80 in z. I get an error when --reslice on 120 because med2image also tries in direction x, which is out of bounds and then the slice will not be converted in other directions.