Richard A. SIMON,Levon O. VOGELSANG,Lawrence A. RAY
申请号：
US16022864
公开号：
US20200000426A1
申请日:
2018.06.29
申请国别(地区):
US
年份:
2020
代理人:
摘要：
A method for geometric calibration of a radiography apparatus disposes at least one radio-opaque marker in the field of view of the radiography apparatus. A series of tomosynthesis projection images of patient anatomy is acquired from the detector with the x-ray source at different positions along a scan path. For at least three projection images showing the position of the radio-opaque marker, the spatial and angular geometry of the x-ray source and detector are calculated according to the positions of the marker. A tomosynthesis image is reconstructed according to the calculated geometry. A rendering of the reconstructed image is displayed.
