PMID: 15248570Jul 14, 2004Paper

A comparison of rotation- and blob-based system models for 3D SPECT with depth-dependent detector response

Physics in Medicine and Biology
A Yendiki, Jeffrey A Fessler

Abstract

We compare two different implementations of a 3D SPECT system model for iterative reconstruction, both of which compensate for non-uniform photon attenuation and depth-dependent system response. One implementation performs fast rotation of images represented using a basis of rectangular voxels, whereas the other represents images using a basis of rotationally symmetric volume elements. In our simulations the blob-based approach was found to slightly outperform the rotation-based one in terms of the bias-variance tradeoff in the reconstructed images. Their difference can be significant, however, in terms of computational load. The rotation-based method is faster for many typical SPECT reconstruction problems, but the blob-based one can be better-suited to cases where the reconstruction algorithm needs to process one volume element at a time.

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Citations

May 2, 2012·International Journal of Biomedical Imaging·J CabelloM Rafecas
Jul 8, 2015·IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society·Masih NilchianMichael Unser
Apr 29, 2014·IEEE Transactions on Medical Imaging·Kun WangMark A Anastasio
May 28, 2013·Computers in Biology and Medicine·M J Rodríguez-AlvarezJ M Benlloch
Jun 23, 2006·Physics in Medicine and Biology·Michel Defrise, Grant T Gullberg
Jul 25, 2006·Physics in Medicine and Biology·Feng QiaoOsama R Mawlawi
Mar 13, 2012·Physics in Medicine and Biology·Jorge Cabello, Magdalena Rafecas
Oct 21, 2015·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Younes BenkarroumStuart W Rowland
Aug 4, 2005·Physics in Medicine and Biology·D LazaroI Buvat

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