发明名称 |
Method for Subjecting PET Image to Motion Compensation and Attenuation Correction by Using Small Number of Low-Radiation-Dose CT Images |
摘要 |
The present invention relates to a method for motion compensation, and state-of-motion specific attenuation correction of positron tomography images by using a small number of low-radiation-dose computer tomography images. The method of the present invention comprises the steps of: acquiring respiration-specific PET data; acquiring CT images from at least 2 different respirations, and using same to generate a virtual 4D CT image; matching the 4D CT image and the respiration-specific PET data, and selecting 3D CT images accurately corresponding to specific respirations; using the selected results to extract respiration motion displacement field information between respiration-specific PET data; using the selected CT images to subject the respiration-specific PET data to respiration-specific attenuation and scattering correction; and using the corrected respiration-specific PET data items and the extracted respiration motion displacement field information items to carry out respiration compensation and reconstruction. |
申请公布号 |
US2015221104(A1) |
申请公布日期 |
2015.08.06 |
申请号 |
US201214421769 |
申请日期 |
2012.12.14 |
申请人 |
Korea Advanced Institute of Science and Technology |
发明人 |
Ra Jong-beom;Nam Woo-hyun;Ahn Il-jun;Kim Ji-hye;Jang Yong-jin;Park Young-Zoon |
分类号 |
G06T11/00;G06T5/00 |
主分类号 |
G06T11/00 |
代理机构 |
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代理人 |
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主权项 |
1. A method for constructing a positron emission tomography (PET) Image, comprising:
acquiring phase-matched PBT data; acquiring CT images corresponding to at least, two different respiratory states and generating a virtual 4D CT image using the acquired CT images; selecting 3D CT images, corresponding to the phase-matched PET data, from among the 4D CT images; and performing phase-matched attenuation correction and phase-matched scattering correction on the phase-matched PET data using the selected 3D CT images. |
地址 |
Daejeon KR |