Patent ID: 6954513
Filing Date: 2005-10-11
Classification: A61B

Abstract:
1. An X-ray CT apparatus comprising: a gantry including an X-ray source that generates a prespecified amount of X-rays and rotates around a subject and a detector for detecting X-rays passing through said subject at different emission angles; an operation console for reconstructing an X-ray tomographic image of said subject based on data received from said gantry; an input device for inputting information on said subject's age and information on an X-ray irradiated region in said subject; a first storing device for storing statistics on the outer periphery lengths of regions in a human body binned with respect to information on age; a second storing device for storing information on an exposure dose to a phantom having a predetermined diameter measured by irradiating said phantom with a predetermined X-ray dose in a predetermined time period; a diameter calculating device for calculating a diameter of the X-ray irradiated region in said subject based on said information on the age of said subject and said information on the X-ray irradiated region in said subject input by said input device, and on said statistics on the outer periphery lengths stored in said first storing device; an exposure dose calculating device for calculating an exposure dose to a phantom having a diameter equivalent to said calculated diameter of the X-ray irradiated region based on said information on the exposure dose stored in said second storing device; and a display device for displaying said calculated exposure dose.