I have MR images from a research study of the human thigh before and after an intervention which induces muscle atrophy.
I wish to quantify this atrophy by looking at changes in muscle volume. I have used the threshold feature on segment editor to threshold muscle which has worked well to provide a whole muscle volume. However, I also which to look at quadriceps and hamstring volume independently. I have tried to use the scissor tool to cut out the muscle of interest, however this applies the same cut area to every slice and therefore as you move up the leg, the cut area is no longer representative of the muscle of interest. From my understating, you cant apply the scissor function to a single slice.
The only solution I can come up with is to manually paint each muscle of interest on each individual slice, which is going to take an enormous amount of time based on the number of cases I have.
Please can anyone advise if there is an alternative method I could use to do this?