KOEHLER THOMAS,ROESSL EWALD,BEHLING ROLF KARL OTTO,NO‹L PETER BENJAMIN THEODOR,PFEIFFER FRANZ
申请号：
IN201747018496
公开号：
IN201747018496A
申请日:
2017.05.26
申请国别(地区):
IN
年份:
2017
代理人:
摘要：
The invention relates to a source detector arrangement (11) of an X ray apparatus (10) for grating based phase contrast computed tomography. The source detector arrangement comprises an X ray source (12) adapted for rotational movement around a rotation axis (R) relative to an object (140) and adapted for emittance of an X ray beam of coherent or quasi coherent radiation in a line pattern (21) and an X ray detection system (16) including a first grating element (24) and a second grating element (26) and a detector element (6) wherein the line pattern of the radiation and a grating direction of the grating elements are arranged orthogonal to the rotation axis and wherein the first grating element has a first grating pitch varied dependent on a cone angle () of the X ray beam and/or the second grating element has a second grating pitch varied dependent on the cone angle of the X ray beam. Fig 6
