Rotational convolution and SPECT post processing

Author

Zeng, Gengsheng L.

Author_Institution

Dept. of Radiol., Univ. of Utah, Salt Lake City, UT, USA

fYear

2009

fDate

Oct. 24 2009-Nov. 1 2009

Firstpage

3235

Lastpage

3241

Abstract

In many imaging systems, the point spread function (PSF) is non-stationary. Usually a computation-intensive iterative algorithm is used to de-blur the non-stationary PSF. This paper presents a new idea of using a non-iterative method to compensate for the spatially variant PSF. This method first further blurs the image with a non-stationary kernel so that the resultant image has a stationary PSF, then deblurs the resultant image using an efficient decovolution technique. The proposed method is illustrated and implemented by SPECT (single photon emission computed tomography) applications.

Keywords

deconvolution; image restoration; medical image processing; optical transfer function; single photon emission computed tomography; SPECT post processing; computation-intensive iterative algorithm; decovolution technique; imaging systems; nonstationary PSF; nonstationary kernel; point spread function; rotational convolution; single photon emission computed tomography; spatially variant PSF; Attenuation; Collimators; Convolution; Filters; Frequency; Image reconstruction; Iterative algorithms; Iterative methods; Kernel; Single photon emission computed tomography;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE

Conference_Location

Orlando, FL

ISSN

1095-7863

Print_ISBN

978-1-4244-3961-4

Electronic_ISBN

1095-7863

Type

conf

DOI

10.1109/NSSMIC.2009.5401716

Filename

5401716