کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1682782 | 1010481 | 2011 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: An optimal design of X-ray target for uniform X-ray emission from an electronic brachytherapy system An optimal design of X-ray target for uniform X-ray emission from an electronic brachytherapy system](/preview/png/1682782.png)
We present a novel design of an X-ray target to deliver uniform dose from an electronic brachytherapy system (EBS). This design comprises of a combination of both the reflection- and transmission-type target geometries. Monte-Carlo simulation code MCNP5 has been employed for the calculation of angular distribution of the X-ray intensity produced from various morphologies of X-ray targets. The simulation results reveal that the combinatorial target-assembly is promising and effective in achieving uniformity of X-ray emission over the entire space of solid angle of 4π in comparison to a transmission-type target that produces X-rays mainly in the forward direction and a reflection-type target that generates X-rays mostly in the backward direction. As a direct consequence of the uniformity of X-ray emission, the combinatorial target-assembly can impart a uniform dose distribution which makes it suitable as a target of an X-ray tube for EBS.
► A novel X-ray target design is proposed.
► The target consists of a truncated conical reflection-type target and a transmission-type hemispherical cap.
► This combinatorial target assembly can produce X-rays with a good spatial uniformity over the entire solid angles.
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 269, Issue 10, 15 May 2011, Pages 1053–1057