GELLER DIESTER,ENGEL KLAUS J,VOGTMEIER GEREON,KOEHLER THOMAS,ROESSL EWALD
申请号：
IN5140/CHENP/2012
公开号：
IN2012CN05140A
申请日:
2012.06.12
申请国别(地区):
IN
年份:
2013
代理人:
摘要：
X-ray devices for Phase Contrast Imaging (PCI) are often built up with the help of gratings. For large field-of-views (FOV) production cost and complexity of these gratings could increase significantly as they need to have a focused geometry. Instead of a pure PCI with a large FOV this invention suggests to combine a traditional absorption X-ray imaging system with large-FOV with an insertable low-cost PCI system with small-FOV The invention supports the user to direct the PCI system with reduced FOV to a region that he regards as most interesting for performing a PCI scan thus eliminating X-ray dose exposure for scanning regions not interesting for a radiologist. The PCI scan may be generated on the basis of local tomography.
