System and method for hybrid local tomography image reconstruction

摘要

Methods, processes and systems of image reconstruction utilizing a hybrid local tomography (HLT) methodology for reconstructing internal body images in medical applications, and the like. The system and method of the present invention provides an image with emphasized edges, and the image provides estimations of the attenuation coefficient inside the object being scanned.

主权项

1. A Hybrid Local Tomography (HLT) method for reconstructing an image of a region of interest (ROI) of an object, the image including values of the attenuation coefficient of the ROI, the method comprising:
scanning an object to collect cone-beam (CB) projection data of the object, the CB projection data provided to a computer by at least one detector; computing a conventional image of a region of interest (ROI) using the CB projection data, the conventional image of the ROI comprising values of the attenuation coefficient of the ROI; computing a high-pass filtered LT image of the ROI using the CB projection data, the high-pass filtered LT image of the ROI comprising emphasized edges of the ROI; identifying a first balancing constant or function; and computing a summation of the conventional image of the ROI and a product of the first balancing constant or function and the high-pass filtered LT image of the ROI to reconstruct a first image of the ROI of the object, the first image of the ROI including the values of the attenuation coefficient of the ROI.