STUDY ON ANTI-SCATTER GRIDS : STRUCTURE AND PHYSICAL CHARACTERISTICS

Anti-scatter Grids, Applied in Diagnostic Radiology

A new edition of the international standard IEC 60627 of anti-scatter grids will be published within some months. The presentation deals with the most important characteristics of anti-scatter grids according to the standard. Introduction During imaging in diagnostic radiology, X-ray beam is scattered on all media between X-ray source and X-ray image receptor. The most important one from these ...

effect of bataine and sulphate supplement on wool and milk characteristics and lambs performance in naine ewes

تعداد 20 رأس میش نژاد نائینی 6+-24 ماهه، با میانگین وزن 2/3-+40 کیلوگرم، همراه با 20 رأس بره های آنها در قالب طرح کاملا تصادفی اثر بتائین و مکمل سولفات بر خصوصیات شیر و پشم و عملکرد بره ها بررسی شد. میش ها بطور تصادفی در چهار تیمار قرار گرفتند. تیمارها عبارت بودند از: 1-گروه شاهد 2-بتائین (05/0 درصد ماده خشک) 3-سولفات (24/0 سولفور درصد ماده خشک 4-بتائین هرماه با سولفات. جیره غذائی طبق nrc با مح...

Monte Carlo study of the effects of system geometry and antiscatter grids on cone-beam CT scatter distributions.

PURPOSE The proliferation of cone-beam CT (CBCT) has created interest in performance optimization, with x-ray scatter identified among the main limitations to image quality. CBCT often contends with elevated scatter, but the wide variety of imaging geometry in different CBCT configurations suggests that not all configurations are affected to the same extent. Graphics processing unit (GPU) accel...

The choice of anti-scatter grids in diagnostic radioIogy: the optimization of image quaIity and absorbed dose

A Monte Carlo model is developed to study and optimise the design of antiscatter grids in diagnostic radiology. The imaging chain including X-ray energy spectra, phantom (representing the patient), grid and image receptor is simulated. Image qua1ity is quantified in terms of contrast (conventionai screen-film imaging) and signal-to-noise ratio, SNR (digital imaging) and the radiation detriment ...

The study of physical - chemical characteristics and morphometery of gullying area (case study: Gezir, Hormozgan province)