Iterative reconstruction technique for reducing body radiation dose at CT: feasibility study.
作者： Amy K. Hara , Robert G. Paden , Alvin C. Silva , Jennifer L. Kujak , Holly J. Lawder
DOI: 10.2214/AJR.09.2397
关键词:
摘要: OBJECTIVE. The purpose of this study was to evaluate the image noise, low-contrast resolution, quality, and spatial resolution adaptive statistical iterative reconstruction in low-dose body CT.MATERIALS AND METHODS. Adaptive used scan American College Radiology phantom at reference value one-half that (12.5 mGy). Test objects low- high-contrast uniformity modules were evaluated. Low-dose CT with then tested on 12 patients (seven men, five women; average age, 67.5 years) who had previously undergone routine-dose CT. Two radiologists blinded scanning technique evaluated images same obtained without reconstruction. Image graded a scale 1 (best) 4 (worst). Quantitativ...
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