Signal-to-noise Monte-Carlo analysis of base material decomposed CT projections

Author

Heismann, B.J.

Author_Institution

Div. of Computed Tomography, Siemens Med. Solutions, Forchheim

Volume

5

fYear

2006

fDate

Oct. 29 2006-Nov. 1 2006

Firstpage

3174

Lastpage

3175

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2006. IEEE

Conference_Location

San Diego, CA

ISSN

1095-7863

Print_ISBN

1-4244-0560-2

Electronic_ISBN

1095-7863

Type

conf

DOI

10.1109/NSSMIC.2006.356549

Filename

4179706