کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9845323 | 1526512 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The energy weighting technique: measurements and simulations
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
ابزار دقیق
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The energy weighting technique: measurements and simulations The energy weighting technique: measurements and simulations](/preview/png/9845323.png)
چکیده انگلیسی
The technique of energy weighting takes advantage of the upcoming energy resolving properties of X-ray pixel detectors. It can improve the image quality up to a factor of 1.5 [1]. Because the usability of lower photon energies is limited in the presence of scattered radiation, we derived an adapted weighting function for this case. As the applied patient dose is an important item in medical imaging, we investigated the dose reduction capability: energy weighting can halve the dose. Our studies of detector properties show that the energy bin size (i.e. number of energy channels) of the imaging system has a comparatively small impact on the benefit. Additionally, with optimised bin border positions, it is possible to achieve about 90% of maximum improvement with only three energy bins. To investigate the practical feasibility of energy weighting with present detectors, we successfully used the Medipix2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 546, Issues 1â2, 1 July 2005, Pages 37-41
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 546, Issues 1â2, 1 July 2005, Pages 37-41
نویسندگان
D. Niederlöhner, J. Karg, J. Giersch, G. Anton,