Title :
Signal-to-noise Monte-Carlo analysis of base material decomposed CT projections
Author_Institution :
Div. of Computed Tomography, Siemens Med. Solutions, Forchheim
fDate :
Oct. 29 2006-Nov. 1 2006
Abstract :
The noise transfer properties of the water/bone base-material decomposition method has been analyzed. For typical CT projections of bone attenuators with lengths l1 = 0 ... 4.5 cm embedded into 30 cm of attenuating water length, the SNR loss compared to the native CT data is in the range of a factor 3 to 10. Especially the bone coefficient suffers from inferior SNR performance. This is due to the numerical structure of the inversion of the projection formula to integrated water and bone coefficients.
Keywords :
Monte Carlo methods; computerised tomography; deconvolution; medical image processing; 0 to 4.5 cm; 30 cm; CT projections; Monte Carlo analysis; SNR loss; attenuating water length; bone attenuators; computerized tomography; noise transfer properties; projection formula inversion; signal-noise ration; water-bone base material decomposition method; Absorption; Attenuation measurement; Attenuators; Bones; Computed tomography; Geometry; Minerals; Signal analysis; Signal to noise ratio; Solid modeling;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2006. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-0560-2
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2006.356549
