Method for acquiring PET image with ultra-high resolution using movement of PET device
AssigneeGachon University of Industry-Academic Cooperation Foundation
InventorsHang Keun Kim, Young Don Son, Zang Hee Cho, Young Bo Kim, Dae Hyuk Kwon, Yo Han Joo
Life of this patent
Estimating the term…
Abstract
A method for acquiring a PET image with ultra high resolution using movement of a PET device is provided. In the related art, there is a limit in lowering of the resolution below a half (d/2) of the width of a detector. According to the provided method, an image with ultra high resolution, which can jump over the limit, can be acquired. Further, since utilization of larger detectors becomes possible without a loss of the resolution, the sensitivity of the PET can be improved, and thus an image of higher quality can be acquired.
Claims5
A method for acquiring a PET image with ultra high resolution using movement of a PET device, comprising:
- (a) a driving member 30 driving the PET device by a driving control unit 400;
- (b) performing sampling p times for respective detectors 44 by driving of the PET device, and a PET signal receiving unit 200 receiving a plurality of PET data;
- (c) an image reconstructing unit 300 acquiring the PET data acquired from the PET signal receiving unit 200, and acquiring position information of the PET device from the driving control unit 400;
- and
- (d) the image reconstructing unit 300 reconstructing an image using the acquired PET data and the position information,
- wherein the step (d) is performed in an iterative method that corrects an existing pixel value Xoldj to a new pixel value Xnewj using the acquired PET data and the position information,
- wherein the iterative method iterates acquiring a translation operation value Tp that is the position information, obtaining a correction factor sinogram by performing forward projection, and then returning to coordinates of the original image by performing backward projection.
Dependencies are inferred from the claim text.