My urologist/surgeon ordered a PSMA PET for me before going into robotic surgery but my insurance rejected twice. I ended up with bone scan and abdominal MRI which together costs more than a PET. Go figure. I had 15 pelvic lymph nodes removed along with my prostate using the DaVinci robot. All negative. Recovery not bad with 6 small incisions. Make sure your husband's surgeon does at least 2 of these a week. Mine averages 3 per week for 17 years. Try not to worry as I knpw this whole process is slow moving.