Name
Abstract | ||
|---|---|---|
Medical image reconstruction from projections is computationally intensive task that demands solutions for reducing the processing delay in clinical diagnosis applications. This paper analyzes reconstruction methods combined with pre- and post-filtering for Single Photon Emission Computed Tomography (SPECT) in terms of convergence speed and image quality. The evaluation is performed by means of an image database taken from a concurrent study investigating the use of SPECT as a diagnostic tool for the early onset of Alzheimer-type dementia. Filtered backprojection (FBP) methods combined with frequency sampling 2D pre- and post-filtering provides a good trade-off between image quality and delay. Maximum likelihood expectation maximization (ML-EM) improves the quality of the reconstructed image but with a considerable increase in processing delay. To overcome this problem the ordered subsets expectation maximization (OS-EM) method is found to be an effective algorithm for reducing the computational cost with an image quality similar to ML-EM. |
Year | DOI | Venue |
|---|---|---|
2008 | 10.1007/978-3-540-69384-0_79 | ICCS (1) |
Keywords | Field | DocType |
paper analyzes reconstruction method,image database,image quality,reconstructed image,medical image reconstruction,reconstruction algorithms,maximum likelihood expectation maximization,single photon emission computed,alzheimer-type dementia,subsets expectation maximization,processing delay,effective emission tomography image,spect data,image reconstruction | Single-photon emission computed tomography,Convergence (routing),Iterative reconstruction,Computer vision,Mathematical optimization,Expectation–maximization algorithm,Computer science,Image quality,Tomography,Artificial intelligence,Ordered subset expectation maximization,Processing delay | Conference |
Volume | ISSN | Citations |
5101 | 0302-9743 | 20 |
PageRank | References | Authors |
1.54 | 1 | 10 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| J. Ramírez | 1 | 251 | 21.59 |
| J. M. Górriz | 2 | 570 | 54.40 |
| M. GóMez-RíO | 3 | 86 | 6.82 |
| A. Romero | 4 | 20 | 1.54 |
| R. Chaves | 5 | 63 | 7.09 |
| A. Lassl | 6 | 58 | 3.31 |
| A. L. Rodriguez | 7 | 94 | 17.75 |
| C. G. Puntonet | 8 | 354 | 34.99 |
| F. Theis | 9 | 20 | 1.54 |
| Elmar Wolfgang Lang | 10 | 260 | 36.10 |