Title :
Method of reconstruction of 3-D pet images from projections
Author :
Alla, Srikrishna ; Grigoryan, Artyom M.
Author_Institution :
The University of Texas at San Antonio, Department of Electrical and Computer Engineering, 6900 North Loop 1604 West, 78249-0669, USA
Abstract :
In this paper, a novel method of reconstruction of 3-D Positron Emission Tomography (PET) images is proposed. The method is based on the concept of non traditional, tensor and paired forms of representation of the 3-D image with respect to the 3-D discrete Fourier transform (DFT). Such representations use a minimal number of projections. The proposed algorithm is described in detail for an image (N × N × N), where N is a power of two. A multi-ring scanner that has contiguous rings of detectors stacked on top of each other is considered. The measurement data set containing specified projections of the 3-D image are generated according to the paired representation, and the proposed algorithm is tested on the data. The algorithm for selecting a required number of projections is described and illustrated for image (32×32×32).
Keywords :
Biomedical imaging; Detectors; Discrete Fourier transforms; Fourier transforms; Image generation; Image reconstruction; Medical diagnosis; Neoplasms; Positron emission tomography; Tensile stress;
Conference_Titel :
Region 5 Conference, 2006 IEEE
Conference_Location :
San Antonio, TX, USA
Print_ISBN :
978-1-4244-0358-5
Electronic_ISBN :
978-1-4244-0359-2
DOI :
10.1109/TPSD.2006.5507438
