کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5498279 1533357 2017 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hybrid framework for feasible modeling of an edge illumination X-ray phase-contrast imaging system at a human scale
ترجمه فارسی عنوان
چارچوب هیبریدی برای مدل سازی قابل اجرا از یک لبه روشنایی سیستم تصویربرداری فازی اشعه ایکس در یک مقیاس انسانی
کلمات کلیدی
تصویربرداری فازی کنتراست اشعه ایکس، تصویربرداری بیولوژیکی و پزشکی، شبیه سازی عددی،
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم تشعشع
چکیده انگلیسی
Here, we present a hybrid approach for simulating an edge illumination X-ray phase-contrast imaging (EIXPCi) set-up using graphics processor units (GPU) with a high degree of accuracy. In this study, the applicability of pixel, mesh and non-uniform rational B-splines (NURBS) objects to carry out realistic maps of X-ray phase-contrast distribution at a human scale is accounted for by using numerical anthropomorphic phantoms and a very fast and robust simulation framework which integrates total interaction probabilities along selected X-ray paths. We exploit the mathematical and algorithmic properties of NURBS and describe how to represent human scale phantoms in an edge illumination X-ray phase-contrast model. The presented implementation allows the modeling of a variety of physical interactions of x-rays with different mathematically described objects and the recording of quantities, e.g. path integrals, interaction sites and deposited energies. Furthermore, our efficient, scalable and optimized hybrid Monte Carlo and ray-tracing projector can be used in iterative reconstruction algorithms on multi GPU heterogeneous systems. The preliminary results of our innovative approach show the fine performance of an edge illumination X-ray phase-contrast medical imaging system on various human-like soft tissues with noticeably reduced computation time. Our approach to the EIXPCi modeling confirms that building a true imaging system at a human scale should be possible and the simulations presented here aim at its future development.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica Medica - Volume 40, August 2017, Pages 1-10
نویسندگان
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