Abstract
In clinical applications, it is very important to accurately determine the range of a proton beam in a patient. Recently, a prototype prompt-gamma scanning system, called a prompt-gamma scanner (PGS), has been constructed at Hanyang University in Korea with the collaboration of the Korean national cancer center (NCC), based on a series of Monte Carlo simulations. The PGS system is composed of a prompt-gamma collimator, a CsI(Tl) scintillation detector, a multi-channel analyzer (MCA), a precision movement system, and an integrated readout system. The prompt-gamma collimator is designed to effectively shield high-energy neutrons from the proton beam passage and subsequent capture gammas. The PGS system can be used to scan the distribution of the prompt gammas in the patient from the proton beam passage. The distribution of the prompt gammas can then be used to determine the proton beam range or the distal dose edge in the patient. In this study, the PGS system was tested with a 38 MeV proton beam at the Korea cancer center hospital (KCCH). The experiment was also simulated, using a Monte Carlo particle transport simulation code, MCNPX. Our result is very encouraging, showing that there is a clear correlation between the distribution of the prompt gammas and the location of the distal dose edge for the 38 MeV proton beam. According to our result, we believe that the location of the distal dose edge can be determined within 1-2 mm from the distribution of the prompt gammas.
| Original language | English |
|---|---|
| Pages (from-to) | 562-565 |
| Number of pages | 4 |
| Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
| Volume | 580 |
| Issue number | 1 SPEC. ISS. |
| DOIs | |
| Publication status | Published - 2007 Sep 21 |
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All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Instrumentation
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Determination of distal dose edge location by measuring right-angled prompt-gamma rays from a 38 MeV proton beam. / Min, Chulhee; Kim, J. W.; Youn, M. Y.; Kim, C. H.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 580, No. 1 SPEC. ISS., 21.09.2007, p. 562-565.Research output: Contribution to journal › Article
TY - JOUR
T1 - Determination of distal dose edge location by measuring right-angled prompt-gamma rays from a 38 MeV proton beam
AU - Min, Chulhee
AU - Kim, J. W.
AU - Youn, M. Y.
AU - Kim, C. H.
PY - 2007/9/21
Y1 - 2007/9/21
N2 - In clinical applications, it is very important to accurately determine the range of a proton beam in a patient. Recently, a prototype prompt-gamma scanning system, called a prompt-gamma scanner (PGS), has been constructed at Hanyang University in Korea with the collaboration of the Korean national cancer center (NCC), based on a series of Monte Carlo simulations. The PGS system is composed of a prompt-gamma collimator, a CsI(Tl) scintillation detector, a multi-channel analyzer (MCA), a precision movement system, and an integrated readout system. The prompt-gamma collimator is designed to effectively shield high-energy neutrons from the proton beam passage and subsequent capture gammas. The PGS system can be used to scan the distribution of the prompt gammas in the patient from the proton beam passage. The distribution of the prompt gammas can then be used to determine the proton beam range or the distal dose edge in the patient. In this study, the PGS system was tested with a 38 MeV proton beam at the Korea cancer center hospital (KCCH). The experiment was also simulated, using a Monte Carlo particle transport simulation code, MCNPX. Our result is very encouraging, showing that there is a clear correlation between the distribution of the prompt gammas and the location of the distal dose edge for the 38 MeV proton beam. According to our result, we believe that the location of the distal dose edge can be determined within 1-2 mm from the distribution of the prompt gammas.
AB - In clinical applications, it is very important to accurately determine the range of a proton beam in a patient. Recently, a prototype prompt-gamma scanning system, called a prompt-gamma scanner (PGS), has been constructed at Hanyang University in Korea with the collaboration of the Korean national cancer center (NCC), based on a series of Monte Carlo simulations. The PGS system is composed of a prompt-gamma collimator, a CsI(Tl) scintillation detector, a multi-channel analyzer (MCA), a precision movement system, and an integrated readout system. The prompt-gamma collimator is designed to effectively shield high-energy neutrons from the proton beam passage and subsequent capture gammas. The PGS system can be used to scan the distribution of the prompt gammas in the patient from the proton beam passage. The distribution of the prompt gammas can then be used to determine the proton beam range or the distal dose edge in the patient. In this study, the PGS system was tested with a 38 MeV proton beam at the Korea cancer center hospital (KCCH). The experiment was also simulated, using a Monte Carlo particle transport simulation code, MCNPX. Our result is very encouraging, showing that there is a clear correlation between the distribution of the prompt gammas and the location of the distal dose edge for the 38 MeV proton beam. According to our result, we believe that the location of the distal dose edge can be determined within 1-2 mm from the distribution of the prompt gammas.
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U2 - 10.1016/j.nima.2007.05.235
DO - 10.1016/j.nima.2007.05.235
M3 - Article
AN - SCOPUS:34548227965
VL - 580
SP - 562
EP - 565
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
IS - 1 SPEC. ISS.
ER -