Dennis M Herschbach, BS

The bladder is kept full during prostate proton therapy to push the small and large intestines out of the radiation field and maintain a consistent position for the bladder and nearby pelvic organs. However, it is a challenge to keep a regular bladder volume...

In vivo dosimetry is essential for treatment verification and patient safety. Although commercial radiochromic film systems are established for photons, proton therapy adds complexity because film response is energy dependent and clinical beams are typically...

Proton pencil beam scanning (PBS) offers excellent dose conformity but remains limited by delivery inefficiency associated with energy layer switching time. A programmable energy modulation filter (PEMF) was developed to enable single-energy proton PBS delive...