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COMPUTED TOMOGRAPHY HAVING MOTION COMPENSATION
专利权人:
SIEMENS AKTIENGESELLSCHAFT
发明人:
Yiannis KYRIAKOU
申请号:
US14914467
公开号:
US20160206272A1
申请日:
2013.08.29
申请国别(地区):
US
年份:
2016
代理人:
摘要:
The embodiments relate to a method for producing a digital volume model of a body volume by a sensor device, which sensor device includes a plurality of radiation sensors, of which each produces a pixel value in a projection. In order to produce the volume model, a plurality of projections from different projection angles (a) are produced and the volume model is computed from sensor positions of the radiation sensors and pixel values of the radiation sensors. For at least one projection angle (a), the sensor positions are corrected by a respective correction vector for rigid motion compensation. The problem addressed is that of also compensating the non-rigid motion of the body volume (i.e., the deformation) in the computation of the volume model. This problem is solved in that, in order to correct the sensor positions, the projection surface provided by the totality of the radiation sensors is divided into a plurality of sub-surfaces and a separate correction vector is determined for each of the sub-surfaces independently of each other.
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中国工程科技知识中心
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