Name
Abstract | ||
|---|---|---|
Single photon emission computed tomography (SPECT) has the potential for quantitation of absolute activity concentration in vivo. The accuracy of activity estimates depends to a large extent on the accuracy of the attenuation and scatter corrections performed. This is particularly so in the thorax, where assumptions about regular object shape and constant density are inappropriate. We have developed a method of scatter correction based on convolution subtraction (CS) which takes account of variable tissue density. Rather than assuming the scatter fraction to be constant, the scatter fraction is determined at each point in the image based on measured photon transmission through the object. For comparison, a modified lower window subtraction (LWS) technique has also been developed, involving convolution of lower window data with a theoretically derived kernel, which more accurately relates lower window scatter to photopeak scatter compared with conventional LWS. |
Year | DOI | Venue |
|---|---|---|
1991 | 10.1007/BFb0033740 | IPMI |
Keywords | Field | DocType |
tomography,attenuation,non-homogeneous media,spect scatter correction,quantitation,lower window subtraction.,convolution subtraction,transmission | Single-photon emission computed tomography,Kernel (linear algebra),Photon,Computational physics,Pattern recognition,Convolution,Computer science,Tomography,Artificial intelligence,Attenuation,Scatter correction,Subtraction | Conference |
Volume | ISSN | ISBN |
511 | 0302-9743 | 3-540-54246-9 |
Citations | PageRank | References |
1 | 0.63 | 1 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| S. R. Meikle | 1 | 22 | 2.50 |
| B. F. Hutton | 2 | 1 | 0.63 |
| D. L. Bailey | 3 | 1 | 0.63 |
| R. R. Fulton | 4 | 10 | 1.79 |
| K. Schindhelm | 5 | 1 | 0.63 |