The articles that I have read on IMPT (years ago I mind you)indicate that it's delivery is similar to say a smart bomb where the docs can design the deliver to actually enter the body without damaging any cells getting to the pre programmed target and conform to the target and destroy it with minumal colleteral damage. Unfortunately it's uses were less than IMRT and there aren't that many cancer centers that have the technology and it's used most often in hard to reach tumors like brain tumors. I saw a lot of promise in IMPT in uses with OC as it could potentially all but wipe out many of our post Tx side effects but it seemed like it was years away. I don't remember anyone having IMPT used for OC before so I would be interested in hearing more about your particular Primary and overall Dx.