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OBJECTIVE To assess the advantages of Adaptive Iterative Dose Reduction using Three Dimensional Processing (AIDR3D) for image quality improvement and dose reduction for chest computed tomography (CT). METHODS Institutional Review Boards approved this study and informed consent was obtained. Eighty-eight subjects underwent chest CT at five institutions(More)
AIM To investigate the correlation between signal intensity (SI) on diffusion-weighted imaging (DWI) and the levels of prostate-specific antigen (PSA) in patients with prostate cancer treated with radiation and hormonal therapy. PATIENTS AND METHODS Forty-four patients with prostate cancer treated with hormonal therapy and radiation therapy were(More)
The aim of this study was to compare density heterogeneity on wide volume (WV) scans with that on helical CT scans. 22 subjects underwent chest CT using 320-WV and 64-helical modes. Density heterogeneity of the descending aorta was evaluated quantitatively and qualitatively. At qualitative assessment, the heterogeneity was judged to be smaller on WV scans(More)
PURPOSE The purpose of our study was to assess pulmonary nodule characteristics using density histogram kurtosis and skewness and to distinguish malignant from benign nodules. MATERIALS AND METHODS Ninety-three lung nodules on CT were analyzed, including 72 malignant and 21 benign nodules. They were completely solid or solid with limited ground-glass(More)
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