Evaluation of a Radiation Dose Reduction Strategy for Pediatric Chest CT
作者： Jee-Eun Kim , Beverley Newman
DOI: 10.2214/AJR.09.3726
关键词:
摘要: OBJECTIVE. The purpose of our study was to quantify the effect changes made CT chest protocol on patient dose, image quality, and noise when using a kilovoltage (kVp)-lowering strategy.MATERIALS AND METHODS. We retrospectively selected 120 children who underwent CT: 60 in 2006 2008. In each group there were 30 weighing less than 15 kg between kg. kVp reference current (mAs) 65. 2008, 80 for < 100 15–60 kg, with mAs 55. For examination, volume dose index (CTDIvol) dose–length product (DLP) recorded. Effective (ED) estimated DLP method. Image measured. Overall quality subjectively evaluated.RESULTS. weight 15.0 CTDIvol, DLP, ED reduced by 73%, 75%, respectively (p 0.05). range 45%, 44%, 48%, respectivel...
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