RADIOGRAPHIC IMAGING APPARATUS,申请号JP20090022115-传众专利搜索

RADIOGRAPHIC IMAGING APPARATUS

申请公布号：JP2010181149(A)

申请号：JP20090022115

申请日期：2009.02.03

申请公布日期：2010.08.19

申请人：

FUJIFILM CORP

发明人：TAKAHASHI KENJI

分类号：G01N23/04;A61B6/00;G01T1/24;G03B42/00

主分类号：G01N23/04

摘要：PROBLEM TO BE SOLVED: To sufficiently reduce effect of scattered light and suppress effect of variations in strength and distribution of a plurality of radiation beams in a radiographic imaging apparatus having a plurality of radiation sources. SOLUTION: Fan beams of radiation are output from multiple radiation sources 1a. Radiation is output simultaneously only from a part of the radiation sources 1a having irradiation ranges that neither overlap with each other nor are adjacent to each other. Image correction data is obtained by irradiating the radiographic image detector with radiation while the groups of radiation sources are sequentially switched in a state in which a subject is not present. An effective area having a value higher than a predetermined threshold is determined for each image correction data. The radiographic image detector is irradiated with radiation in a state in which a subject is set while groups of radiation sources are sequentially switched. Radiation image data obtained based on the effective area, which corresponds to each of the groups of radiation sources, is corrected based on the image correction data. COPYRIGHT: (C)2010,JPO&INPIT