Patent Document ID: 20070147576
Application ID: 11617236
Patent Status: 0

Claim One:
1. An X-ray CT apparatus comprising: an X-ray source configured to irradiate X-rays onto an object; a collimator driving unit configured to control the irradiated X-rays; a multi-slice detector provided at a position facing to the X-ray source to detect the irradiated X-rays through the object; a wide range projection data control unit configured to acquire wide range projection data by irradiating X-rays from the X-ray source on a wide range that is controlled by the collimator driving unit so as to cover peripheral channel portions of the multi-slice detector; a wide range projection data memory unit configured to store the acquired wide range projection data; a narrow range projection data control unit configured to acquire narrow range projection data by irradiating X-rays from the X-ray source onto a narrow range that is controlled by the collimator driving unit so as to cover central channel portions of the multi-slice detector after acquiring the wide range projection data; and a reconstruction unit configured to generate compounded projection data based on the wide range projection data and the narrow range projection data, and to perform a reconstruction process based on the compounded projection data.