| 发明名称 |
Method and apparatus for projection image generation from tomographic images |
| 摘要 |
A method for generating a projection image from tomographic images first captures (S101) a number of stacked two-dimensional tomographic images representing a tomographic volume. The pixels of the stacked two-dimensional tomographic images are weighted (S102) along a number of projection beams through the tomographic volume with weighting factors that are chosen under the constraint that the sum of all squared weighting factors for each individual projection beam is between a given lower limit and a given upper limit. Then the weighted pixels are summed up (S103) along the number of projection beams for generating the two-dimensional projection image. |
| 申请公布号 |
US9569864(B2) |
申请公布日期 |
2017.02.14 |
| 申请号 |
US201414484504 |
申请日期 |
2014.09.12 |
| 申请人 |
Siemens Aktiengesellschaft |
发明人 |
Abdurahman Shiras;Jerebko Anna;Kelm Michael |
| 分类号 |
G06T11/00;A61B6/00;A61B6/03 |
主分类号 |
G06T11/00 |
| 代理机构 |
|
代理人 |
Greenberg Laurence;Stemer Werner;Locher Ralph |
| 主权项 |
1. A method for generating a projection image from tomographic images, the method comprising the following steps:
capturing a plurality of stacked two-dimensional tomographic images representing a tomographic volume; weighting pixels of the stacked two-dimensional tomographic images along a number of projection beams through the tomographic volume with weighting factors chosen under a constraint that a sum of all squared weighting factors for each individual projection beam lies between a given lower limit and a given upper limit, the given lower limit set equal to the given upper limit; and generating the two-dimensional projection image by summing up the weighted pixels along the number of projection beams. |
| 地址 |
Munich DE |
