کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1882458 1533529 2014 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A generalized reverse projection method for fan beam geometry under partially coherent illumination
ترجمه فارسی عنوان
روش پیشنهادی معکوس برای هندسه پرتو فن در نور خیره کننده بخشی
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم تشعشع
چکیده انگلیسی

In this paper, a generalized reverse projection (RP) method for grating-based fan beam phase contrast imaging is presented. Compared to the original RP method, rays rather than projection images are taken into account during the information extraction process. We also discuss the influence of partial coherence on the extracted information. Theoretical derivations and numerical simulations are performed to confirm the validity of the method.


► Fan beam geometry with geometrical magnification is used with the modified RP method.
► In the calculation of conjugate projection images, unitary ray is taken into account for fan beam geometry.
► We have considered the influence of the spatial coherence on the extracted information.
► The measurement range of the generalized RP method is enlarged by moving the sample close to the light source.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Radiation Physics and Chemistry - Volume 95, February 2014, Pages 280–283
نویسندگان
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