کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8166622 1526238 2018 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Estimation of the optical errors on the luminescence imaging of water for proton beam
ترجمه فارسی عنوان
برآورد خطاهای اپتیکی بر روی تصویربرداری از لومینسانس آب برای پرتو پروتون
کلمات کلیدی
لومینسانس، تصویربرداری، پرتو پروتون، تخمین دوز، خطای نوری،
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم ابزار دقیق
چکیده انگلیسی
Although luminescence imaging of water during proton-beam irradiation can be applied to range estimation, the height of the Bragg peak of the luminescence image was smaller than that measured with an ionization chamber. We hypothesized that the reasons of the difference were attributed to the optical phenomena; parallax errors of the optical system and the reflection of the luminescence from the water phantom. We estimated the errors cause by these optical phenomena affecting the luminescence image of water. To estimate the parallax error on the luminescence images, we measured the luminescence images during proton-beam irradiation using a cooled charge-coupled camera by changing the heights of the optical axis of the camera from those of the Bragg peak. When the heights of the optical axis matched to the depths of the Bragg peak, the Bragg peak heights in the depth profiles were the highest. The reflection of the luminescence of water with a black wall phantom was slightly smaller than that with a transparent phantom and changed the shapes of the depth profiles. We conclude that the parallax error significantly affects the heights of the Bragg peak and the reflection of the phantom affects the shapes of depth profiles of the luminescence images of water.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 888, 21 April 2018, Pages 163-168
نویسندگان
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