| 发明名称 |
CYLINDER SOURCE SOFTWARE-POSITIONING METHOD FOR PET CALIBRATION AND IMAGE QUALITY ASSURANCE |
| 摘要 |
A method and system for determining a position of a source including obtaining prompt data and related delayed data from a Positron Emission Tomography (PET) scanner, generating a sinogram from the prompt data, generating crystal efficiency correction factors by performing a normalization calibration based on the obtained delayed data, performing normalization correction on the generated sinogram based on the crystal efficiency correction factors to generate a corrected sinogram, rebinning the corrected sinogram to generate a plurality of two-dimensional sinogram slices, and determining a central axis for each of the plurality of two-dimensional sinogram slices using a center estimation process. |
| 申请公布号 |
US2015139513(A1) |
申请公布日期 |
2015.05.21 |
| 申请号 |
US201314084304 |
申请日期 |
2013.11.19 |
| 申请人 |
Toshiba Medical Research Institute ;KABUSHIKI KAISHA TOSHIBA |
发明人 |
NIU Xiaofeng;Ye Hongwei;Wang Wenli |
| 分类号 |
G06T11/00;G06T5/40;G06T5/00;G06K9/00 |
主分类号 |
G06T11/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for determining a position of a source, comprising:
obtaining prompt data and related delayed data from a Positron Emission Tomography (PET) scanner; generating a sinogram from the prompt data; generating crystal efficiency correction factors by performing a normalization calibration based on the obtained delayed data; performing normalization correction on the generated sinogram based on the crystal efficiency correction factors to generate a corrected sinogram; rebinning the corrected sinogram to generate a plurality of two-dimensional sinogram slices; and determining a central axis for each of the plurality of two-dimensional sinogram slices using a center estimation process. |
| 地址 |
Otawara-shi JP |
