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X-RAY COMPUTED TOMOGRAPHY APPARATUS, MEDICAL DATA SET COMPRESSION METHOD AND MEDICAL DATA SET COMPRESSION PROGRAM
X-RAY COMPUTED TOMOGRAPHY APPARATUS, MEDICAL DATA SET COMPRESSION METHOD AND MEDICAL DATA SET COMPRESSION PROGRAM
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机译：X射线计算机断层摄影设备，医学数据集压缩方法和医学数据集压缩程序
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摘要
PROBLEM TO BE SOLVED: To provide an X-ray CT (Computed Tomography) apparatus capable of preventing lack of a data value in data compression.;SOLUTION: An X-ray CT apparatus 1 related to the present embodiment includes: a rotary frame 113 which supports an X-ray tube 103 and an X-ray detector 107 while they face to each other, and can rotate around a rotation axis; a data set generation part periodically generating a plurality of data sets according to the rotation of the rotary frame 113 on the basis of output from the X-ray detector 107; a difference data set generation part 135 generating a difference data set by calculating a difference between two data sets having the same phase in the data sets; a determination part 137 determining presence/absence of lack of a data value caused by data compression to the difference data set by use of the data value in the difference data set and a prescribed threshold value; a data compression part 139 compressing the difference data set determined that the data value does not lack; and a data set storage part 141 storing the compressed difference data set.;COPYRIGHT: (C)2015,JPO&INPIT
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