Measurement of microdosimetric spectra produced from a 290 MeV/n Spread Out Bragg Peak carbon beam.
This study describes measurements on secondary particles produced by a 290 MeV/n Spread Out Bragg Peak (SOBP) carbon beam. Microdosimetric distributions of secondary fragments from the SOBP carbon beam have been measured by using a new tissue equivalent proportional counter (TEPC) system at the Heavy Ion Medical Accelerator in Chiba of the National Institute of Radiological Sciences. The new TEPC system consists of a TEPC, two solid-state detectors (SSD) and a scintillation counter (FSC: forward scintillation counter). The SSDs and FSC can separately identify charged fragments and secondary neutrons produced by the incident carbon ions. Microdosimetric distributions were measured for secondary particles including neutrons produced by a body-simulated phantom consisting of various PMMA plates (thickness: 0, 34.81, 55.2, 60.95, 64.83, 95.03, 114.79, 124.69, 135.2 and 144.98 mm, respectively) to cover the SOBP (at 60-125 mm depth). The new system can separately determine produced fragments from the incident SOBP carbon beam in a body-simulated phantom.
Endo
Satoru
S
Quantum Energy Applications, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan. endos@hiroshima-u.ac.jp
Takada
Masashi
M
Tanaka
Hiroki
H
Onizuka
Yoshihiko
Y
Tanaka
Kenichi
K
Miyahara
Nobuyuki
N
Baba
Hiromi
H
Oishi
Ayumu
A
Ishikawa
Masayori
M
Hoshi
Masaharu
M
Kimura
Shinzo
S
Minematsu
Masakazu
M
Morimune
Yuki
Y
Kojima
Yasuaki
Y
Shizuma
Kiyoshi
K
D002244:Carbon; D011829:Radiation Dosage; D011874:Radiometry / Q000379:methods*; D013057:Spectrum Analysis
D002244:Carbon
Med Phys. 2007 Sep;34(9):3571-8
17926960
Strahlenther Onkol. 2007 Jun;183(6):295-300
17520182
Phys Med. 2001;17 Suppl 1:13-20
11770529
Radiat Prot Dosimetry. 2002;99(1-4):383-5
12194334
Radiat Environ Biophys. 2002 Sep;41(3):231-4
12373333
J Radiat Res. 2007 Sep;48(5):397-406
17690533
J Radiat Res. 2007;48 Suppl A:A1-A13
17513896
Med Phys. 2005 Dec;32(12):3843-8
16475784
Radiother Oncol. 2004 Dec;73 Suppl 2:S41-9
15971308