Use of proton beams with breast prostheses and tissue expanders.
Since the early 2000s, a small but rapidly increasing number of patients with breast cancer have been treated with proton beams. Some of these patients have had breast prostheses or tissue expanders in place during their courses of treatment. Procedures must be implemented to plan the treatments of these patients. The density, kilovoltage x-ray computed tomography numbers (kVXCTNs), and proton relative linear stopping powers (pRLSPs) were calculated and measured for several test sample devices. The calculated and measured kVXCTNs of saline were 1% and 2.4% higher than the values for distilled water while the calculated RLSP for saline was within 0.2% of the value for distilled water. The measured kVXCTN and pRLSP of the silicone filling material for the test samples were approximately 1120 and 0.935, respectively. The conversion of kVXCTNs to pRLSPs by the treatment planning system standard tissue conversion function is adequate for saline-filled devices but for silicone-filled devices manual reassignment of the pRLSPs is required.
['Moyers|Michael F|MF|', 'Mah|Dennis|D|', 'Boyer|Sean P|SP|', 'Chang|Chang|C|', 'Pankuch|Mark|M|']
D018427:Breast Implants D001943:Breast Neoplasms D005260:Female D006801:Humans D061766:Proton Therapy D011879:Radiotherapy Dosage D011880:Radiotherapy Planning, Computer-Assisted D011882:Radiotherapy, High-Energy D015203:Reproducibility of Results D012680:Sensitivity and Specificity D015625:Tissue Expansion Devices D016896:Treatment Outcome
Proton Breast Stopping power Prosthesis