skip to main content

SciTech ConnectSciTech Connect

Title: 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.
Authors:
 [1] ; ; ;  [1] ;  [2]
  1. ProCure Proton Therapy Center, Somerset, NJ (United States)
  2. ProCure Proton Therapy Center, Warrenville, IL (United States)
Publication Date:
OSTI Identifier:
22267977
Resource Type:
Journal Article
Resource Relation:
Journal Name: Medical Dosimetry; Journal Volume: 39; Journal Issue: 1; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
62 RADIOLOGY AND NUCLEAR MEDICINE; ANIMAL TISSUES; COMPUTERIZED TOMOGRAPHY; EQUIPMENT; MAMMARY GLANDS; PATIENTS; PROSTHESES; PROTON BEAMS; SILICONES; STOPPING POWER