Patent ID: 7106824
Filing Date: 2006-09-12
Classification: A61B,H05G

Abstract:
1. An X-ray computed tomographic apparatus, comprising: an X-ray tube configured to generate X-rays; an X-ray detecting unit configured to detect X-rays transmitted through a subject to be examined to acquire projection data; an image reconstructing unit configured to reconstruct image data from the acquired projection data; and a tube current value setting unit configured to set a tube current value for the X-ray tube on the basis of the projection data and information about contrast examination planned for the subjects, wherein the tube current value setting unit is configured to determine a water-equivalent thickness based on the projection data; the X-ray computed tomographic apparatus further includes a water-equivalent thickness correcting unit which corrects the determined water-equivalent thickness based on the information about the contrast examination; and the tube current value setting unit is configured to determine the tube current value based on the corrected water-equivalent thickness.