Measure thigh muscle volume

Dear Steve
I would like to consult you about the best method to measure thigh muscle volume, I’ve used, segment editor>> threshold >> then try to correct the error. would you advice me the better approach, or is my method good? part of my PhD study involves muscle measurement comparing 2 visits. thanks

best regards

Is there any particular aspect of the segmentation that you would like to improve (reduce effort, increase accuracy, eliminate certain kind of errors)?