Extension of radiochromic film dosimetry to three dimensions: A feasibility study

被引：0

作者：

Adamczyk, S. ^{[1
]}

Skorska, M. ^{[1
]}

机构：

[1] Adam Mickiewicz Univ Poznan, Inst Phys, PL-61614 Poznan, Poland

来源：

NUCLEAR PHYSICS METHODS AND ACCELERATORS IN BIOLOGY AND MEDICINE | 2007年 / 958卷

关键词：

radiochromic film; X-ray dosimetry;

D O I：

暂无

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The feasibility of measuring dose distributions in three-dimensions using Gafchromic EBT film was studied. A stack of film was used as tomographic dosimeter. The response of film (4x4cm(2)) placed between a stack of Gafchromic EBT films and slabs of polystyrene phantom was tested. Differences in film response for two different photon beam qualities, 6 MV and 25 MV, were observed. Measurements with 6 MV beam quality revealed that for different field sizes and depths there were no changes in response of EBT Gafchromic film when placed between polystyrene plates or sandwiched between other films. However, in the case of 25 MV beam quality, a statistically significant over-response was found for film placed in stack. We conclude that stacked-film dosimetry is feasible at 6 MV. For 25 MV photon beam quality the stack of films showed different properties than the polystyrene slabs of the same height.

引用

页码：286 / 287

页数：2