An assessment of GafChromic film for measuring 50 kV and 100 kV percentage depth dose curves

被引：32

作者：

Fletcher, Claire Lesley ^{[1
]}

Mills, John A. ^{[1
]}

机构：

[1] Univ Hosp, Dept Clin Phys & Bioengn, Coventry CV2 2DX, W Midlands, England

来源：

PHYSICS IN MEDICINE AND BIOLOGY | 2008年 / 53卷 / 11期

关键词：

D O I：

10.1088/0031-9155/53/11/N02

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Percentage depth dose (PDD) curves were obtained for 50 kV and 100 kV x-rays on a Gulmay Medical D3000 DXR unit. Different dosimetry systems were compared including a Scanditronix Wellhofer small volume cylindrical ion chamber, a Wellhofer photon PFD diode, a PTW soft x-ray parallel plate chamber (N23342) and two types of radiochromic film: GafChromic EBT and GafChromic MD55. The PDD curves were also compared to BEAMnrc Monte Carlo predictions. GafChromic film was found to be a valid choice of dosimeter for measuring percentage depth dose curves at 100 kV and 50 kV. All the dosimeters showed agreement with predictions at depths greater than 10 mm, while near the surface GafChromic film and PFD diodes give the best agreement to Monte Carlo values.

引用

页码：N209 / N218

页数：10

共 40 条

[21]

LI XA, 1998, KILOVOLTAGE XRAY BEA, P213

[22]

Ma C.-M., 2006, PIRS0509CREVA NRCC

[23] Study of dosimetry consistency for kilovoltage x-ray beams [J].

Ma, CM ;

Li, XA ;

Seuntjens, JP .

MEDICAL PHYSICS, 1998, 25 (12) :2376-2384

[24] AAPM protocol for 40-300 kV x-ray beam dosimetry in radiotherapy and radiobiology [J].

Ma, CM ;

Coffey, CW ;

DeWerd, LA ;

Liu, C ;

Nath, R ;

Seltzer, SM ;

Seuntjens, JP .

MEDICAL PHYSICS, 2001, 28 (06) :868-893

[25]

MA CM, 1998, KILOVOLTAGE XRAY BEA, P27

[26]

McLaughlin WL, 1996, ACS SYM SER, V620, P152

[27] SENSITOMETRY OF THE RESPONSE OF A NEW RADIOCHROMIC FILM DOSIMETER TO GAMMA-RADIATION AND ELECTRON-BEAMS [J].

MCLAUGHLIN, WL ;

YUNDONG, C ;

SOARES, CG ;

MILLER, A ;

VANDYK, G ;

LEWIS, DF .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1991, 302 (01) :165-176

[28] Evaluation of the use of six diagnostic X-ray spectra computer codes [J].

Meyer, P ;

Buffard, E ;

Mertz, L ;

Kennel, C ;

Constantinesco, A ;

Siffert, P .

BRITISH JOURNAL OF RADIOLOGY, 2004, 77 (915) :224-230

[29] Radiochromic film dosimetry: Recommendations of AAPM Radiation Therapy Committee Task Group 55 [J].

Niroomand-Rad, A ;

Blackwell, CR ;

Coursey, BM ;

Gall, KP ;

Galvin, JM ;

McLaughlin, WL ;

Meigooni, AS ;

Nath, R ;

Rodgers, JE ;

Soares, CG .

MEDICAL PHYSICS, 1998, 25 (11) :2093-2115

[30]

Nowotny R, 1985, Rofo, V142, P685, DOI 10.1055/s-2008-1052738

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