Volume analysis using 3D Slicer

I need to find an expert user for 3D Slicer (https://www.slicer.org/). I basically need some help with some routine, straightforward 3D Slicer work. I have a number of thoracic CT scans on a patient, each separated by several months, and I need to measure the volume of a lesion on each of these scans. The CT data is standard DICOM format. The data will load into 3D Slicer, I've tested this. I have had some success using 3D Slicer myself, but I have also run into a bunch of problems, and I've decided that I need to hire some expert help, rather than struggling with the software. Probably the best way to do the project is for me to simply hire an expert by the hour, and we can do screen sharing, and just work through the project that way.