发明名称 |
Image domain based noise reduction for low dose computed tomography fluoroscopy |
摘要 |
A method of computed-tomography and a computed-tomography apparatus in which x-ray projection data is acquired at a number of views for a scan of an object. Partial images are created from data for a desired number of said views. Full scan images are created from plural ones of the partial images. Non-overlapping time images are created from the full-scan images. Gradient images are also created. An improved image is created by weighting respective ones of the full scan and non-overlapping time images using the gradient image. The improved image has increased sharpness with reduced noise. |
申请公布号 |
US8687871(B2) |
申请公布日期 |
2014.04.01 |
申请号 |
US201213557467 |
申请日期 |
2012.07.25 |
申请人 |
MOGHE SACHIN;HEIN ILMAR;KABUSHIKI KAISHA TOSHIBA;TOSHIBA MEDICAL SYSTEMS CORPORATION |
发明人 |
MOGHE SACHIN;HEIN ILMAR |
分类号 |
A61B6/03 |
主分类号 |
A61B6/03 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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