以加权反投影重建CT图像数据的方法、计算单元和系统

本发明涉及种用于通过加权滤波反投影重建由多个图像体素（V）组成的CT图像数据的方法，其中，为了对滤波反投影中的投影数据（P）进行加权，使用加权函数所述加权函数将在行边缘附近击中检测器行的中央射线的投影数据更小地加权，并且将中央地击中检测器行的中央射线的投影数据更强地加权。 A method, a computation unit and a CT system are disclosed for reconstructing CT image data, which includes a plurality of image voxels, by way of a weighted filte...

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Bibliographic Details
Format Patent
LanguageChinese
Published 12.04.2017
Subjects
CALCULATING
COMPUTING
COUNTING
DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
MEDICAL OR VETERINARY SCIENCE
PHYSICS
SURGERY
TESTING
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Summary:本发明涉及种用于通过加权滤波反投影重建由多个图像体素（V）组成的CT图像数据的方法，其中，为了对滤波反投影中的投影数据（P）进行加权，使用加权函数所述加权函数将在行边缘附近击中检测器行的中央射线的投影数据更小地加权，并且将中央地击中检测器行的中央射线的投影数据更强地加权。 A method, a computation unit and a CT system are disclosed for reconstructing CT image data, which includes a plurality of image voxels, by way of a weighted filtered back-projection. To weight the projection data during the filtered back-projection, a weight function is used, which weights the projection data from central beams which strike a detector row relatively close to the edge of the row relatively less, and which weights the projection data of central beams, which strike a detector row more relatively centrally, relatively more.
Bibliography:Application Number: CN201310435145