Method to compensate gating effects on image uniformity and quantification for PET scan with continuous bed motion

摘要

Methods and systems for processing data for medical imaging are disclosed. The method includes obtaining a set of continuous bed motion (CBM) data from a first imaging modality. The set of CBM data includes a plurality of gating signals. A CBM normalization matrix is calculated. The CBM normalization matrix calculation includes the plurality of gating signals. An image is reconstructed from the CBM data and the CBM normalization matrix. The first imaging modality can be a PET imaging device.

主权项

1. A method for processing data for medical imaging, the method comprising:
obtaining a set of continuous bed motion (CBM) data from a first imaging modality, wherein the set of CBM data includes a plurality of gating signals; calculating a CBM normalization matrix using the plurality of gating signals; and reconstructing an image from the CBM data and the CBM normalization matrix, wherein calculating the CBM normalization matrix comprises: calculating a plurality of time windows; calculating a plurality of intersections between the plurality of gating signals and the plurality of time windows; calculating a weighted scanner efficiency using the plurality of intersections; calculating a CBM efficiency by summing the weighted scanner efficiency; and generating a CBM normalization matrix value from the CBM efficiency.