نتایج جستجو برای: kilovoltage

تعداد نتایج: 427  

Journal: :Precision radiation oncology 2022

Objective This study was carried out to analyze the effect of varying kilovoltage peak (kVp) on Hounsfield unit (HU) for various tissue substitutes in two different phantoms and their dosimetric impact dose calculation Monaco treatment planning system version 5.11.02. Methods HU density materials obtained from computed tomography images acquired at kVps (80, 100, 120). Two (CatPhan 503 CIRS 062...

Journal: :IEEE transactions on radiation and plasma medical sciences 2023

Radiomics as a novel quantitative approach to medical imaging is an emerging area in the field of radiology. Artificial Intelligence offers promising tools for exploiting and analyzing radiomics. The objective present study propose methodology design, development, evaluation Machine Learning (ML) models prediction recovery progress skeletal muscle injury over time rats using were extracted from...

Journal: :AJNR. American journal of neuroradiology 1984
G D Harvey D P Mayer P D Radecki

Certain regions of the body can be relatively difficult to image optimally by computed tomography (CT). The lower neck falls into this category. A routine transverse image at this level includes the shoulders, which can cause beam hardening [1] . Beam hardening reduces subject contrast and often produces streak artifacts between the shoulders [2, 3]. This image degradation is especially trouble...

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