Ball phantom for dosimetry of surface and build-up region in megavoltage photon beam of oblique incidence through the couch

被引：1

作者：

Liu, Yu-Chuan ^{[2
,3
]}

Chen, Hsin-Hsiung ^{[3
]}

Ho, Sheng-Yow ^{[2
]}

Kuo, Chung-Ming ^{[4
]}

Chen, Ching-Jiang ^{[5
]}

Chao, Max Min ^{[3
]}

Niu, H. ^{[7
]}

Chao, J. H. ^{[7
]}

Wu, Jia-Ming ^{[1
,3
,6
]}

Chen, Tzong-Jer

Wu, Jin-Tze ^{[1
,6
]}

机构：

[1] E Da Hosp, Dept Radiat Oncol, Kaohsiung, Taiwan

[2] Tainan Sin Lau Hosp, Dept Radiat Oncol, Presbyterian Church, Taiwan

[3] Cent Taiwan Univ Sci & Technol, Inst Radiol Sci, Taichung, Taiwan

[4] I Shou Univ, Dept Informat Engn, Kaohsiung, Taiwan

[5] I Shou Univ, Dept Med Imaging & Radiol Sci, Kaohsiung, Taiwan

[6] E Da Hosp, Dept Radiat Oncol, Kaohsiung, Taiwan

[7] Natl Tsing Hua Univ, Nucl Sci & Technol Dev Ctr, Hsinchu 30013, Taiwan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2011年 / 652卷 / 01期

关键词：

Radiotherapy; Ball phantom; Build-up dose; Attenuation and oblique incidence; RADIOCHROMIC FILM;

D O I：

10.1016/j.nima.2010.08.113

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

This study investigates surface dose and build-up region dosimetry as well as beam attenuation by ball phantom for coplanar and non-coplanar oblique photon beam incidence through a treatment couch in radiation therapy. The dosimetry of the surface and build-up region and attenuating incidence of true posterior and maximum oblique incidence (15(0) below surface) beams on the treatment couch are measured and compared with an open field. Photon calculation kernels of the computerized treatment planning system do not include the factor of scatter doses induced by the couch in the build-up region. These scatter doses can have some implications for skin reactions. Therefore, monitor unit calculation is necessary in posterior oblique angles or non-coplanar incidence of the treatment couch. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：850 / 853

页数：4

共 20 条

[1] Build-Up Region Dosimetry of Megavoltage Photon Beams for Breast Radiotherapy
Ahmad, M.
Deng, J.
Lincoln, H.
Nguyen, K. T.
Griffin, M. E.
Chen, Z.
Nath, S.
Moran, M.
Husain, Z.
Nath, R.
[J]. MEDICAL PHYSICS, 2013, 40 (06)
[2] Accurate dosimetry in photon build-up region
Abdel-Rahman, W.
Devic, S.
Seuntjens, J.
Podgorsak, E.
[J]. MEDICAL PHYSICS, 2006, 33 (06) : 2276 - 2276
[3] Absorption ratio of treatment couch and effect on surface and build-up region doses
Tugrul, Taylan
[J]. REPORTS OF PRACTICAL ONCOLOGY AND RADIOTHERAPY, 2018, 23 (01) : 1 - 5
[4] Absorbed dose measurements in the build-up region of flattened versus unflattened megavoltage photon beams
De Puysseleyr, Annemieke
Lechner, Wolfgang
De Neve, Wilfried
Georg, Dietmar
De Wagter, Carlos
[J]. ZEITSCHRIFT FUR MEDIZINISCHE PHYSIK, 2016, 26 (02): : 177 - 183
[5] Investigation of surface and build-up region dosimetry for obliquely incident IMRT beams
Dogan, N
Glasgow, G
[J]. MEDICAL PHYSICS, 2003, 30 (06) : 1405 - 1406
[6] The development and experimental evaluation of a simple analytical model for the TPR in the build-up region of megavoltage photon beams
Godin, Marcelo
Galiano, Eduardo
[J]. MEDICAL PHYSICS, 2012, 39 (01) : 257 - 262
[7] Surface and build-up region dose analysis for clinical radiotherapy photon beams
Parsai, E. Ishmael
Shvydka, Diana
Pearson, David
Gopalakrishnan, M.
Feldmeier, John J.
[J]. APPLIED RADIATION AND ISOTOPES, 2008, 66 (10) : 1438 - 1442
[8] Comparison of build-up region doses in oblique tangential 6 MV photon beams calculated by AAA and CCC algorithms in breast Rando phantom
Masunun, P.
Tangboonduangjit, P.
Dumrongkijudom, N.
[J]. 13TH SOUTH-EAST ASIAN CONGRESS OF MEDICAL PHYSICS 2015 (SEACOMP), 2016, 694
[9] Dose Evaluation of Build-up Region of Photon Beam using Thermoluminescence Dosimeter (TLD) Sheet
Sasaki, K.
Shiota, Y.
Miura, M.
[J]. RADIOTHERAPY AND ONCOLOGY, 2019, 133 : S917 - S917
[10] The Perturbation Correction Factors for Plane-Parallel Ion Chamber Dose Measurements in the Build-Up Region of Megavoltage Photon Beams
Yoshiyama, F.
Araki, F.
Ono, T.
[J]. MEDICAL PHYSICS, 2010, 37 (06)

← 1 2 →