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CT FOCAL POINT DETERMINATION METHOD AND SYSTEM
专利权人:
LTD.;SHANGHAI UNITED IMAGING HEALTHCARE CO.
发明人:
Yifeng JIANG
申请号:
US16889766
公开号:
US20200289066A1
申请日:
2020.06.01
申请国别(地区):
US
年份:
2020
代理人:
摘要:
A method for determining a CT focal point includes determining a first intensity of first radiation incident on a first detector unit of a scanner, wherein the scanner may include a non-uniform anti-scatter grid (ASG) and a radiation source, and the non-uniform ASG may be configured according to a first focal point of the radiation source. The method also includes determining a second intensity of second radiation incident on a second detector unit of the scanner, wherein the first radiation and the second radiation are emitted from the radiation source with a second focal point. The method further includes determining a displacement of the second focal point from the first focal point based on the first intensity and the second intensity.
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