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Title: Analysis of CT Numbers and Relative Proton Stopping Powers for Real Tissue Samples

The accuracy of computer planning of clinical proton dose distribution is partly determined by the precision of the conversion of CT Hounsfield Units to relative proton stopping powers. The calibration curves from three different sources were compared. We have found about 5% differences between proton stopping power values in the range from -700 HU to 0 HU. Calibration data for several soft tissues and phantom materials were also experimentally measured. The data for the tissues are in a good agreement with the calibration curves however data for phantom materials have significant deviations.
Authors:
; ;  [1] ;  [2] ;  [3]
  1. Institute for Theoretical and Experimental Physics, B. Cheremushkinskaya, 25, 117259 Moscow (Russian Federation)
  2. M. V. Lomonosov Moscow State University Physics Faculty, Leninskie Gory, 1-2, GSP-1, 11991, Moscow (Russian Federation)
  3. (Russian Federation)
Publication Date:
OSTI Identifier:
21366915
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1204; Journal Issue: 1; Conference: 5. international summer school on nuclear physics methods and accelerators in biology and medicine, Bratislava (Slovakia), 6-15 Jul 2009; Other Information: DOI: 10.1063/1.3295651; (c) 2009 American Institute of Physics
Country of Publication:
United States
Language:
English
Subject:
07 ISOTOPES AND RADIATION SOURCES; CALIBRATION; PHANTOMS; PROTON BEAMS; PROTONS; RADIATION DOSE DISTRIBUTIONS; STOPPING POWER; TOMOGRAPHY; X-RAY SPECTROSCOPY BARYONS; BEAMS; DIAGNOSTIC TECHNIQUES; ELEMENTARY PARTICLES; FERMIONS; HADRONS; MOCKUP; NUCLEON BEAMS; NUCLEONS; PARTICLE BEAMS; SPECTROSCOPY; STRUCTURAL MODELS