TITLE:
Reduction of the Radiation Dose by Decreasing the Tube Current without Degradation of Low-Contrast Detectability on Abdominal Multi-Detector Row CT: A Phantom-Based Study
AUTHORS:
Minxia Hu, Xinming Zhao, Junfeng Song, Chunwu Zhou
KEYWORDS:
Tube Current; Radiation Dose; Computed Tomography; X-Ray; Abdominal Imaging
JOURNAL NAME:
Open Journal of Medical Imaging,
Vol.3 No.4,
December
6,
2013
ABSTRACT: As use of the lowest acceptable radiation dose during routine
diagnostic imaging is important, we determined the optimal tube current without
degradation of low-contrast detectability on abdominal multi-detector row CT
(MDCT). CT scanning was performed with a Catphan®500
phantom. The optimal tube current was 300 mA on 64-MDCT and 160 mA on 8-MDCT,
with a fixed voltage of 120 kV. Reduction of the radiation dose in abdominal CT
scanning by lowering the tube current proved to be feasible.