A Monte Carlo investigation of the dual photopeak window scatter correction method [SPECT]

Author

Hademenos, George J. ; Ljungberg, Michael ; King, Michael A. ; Glick, Stephen J.

Author_Institution

Dept. of Nucl. Med., Massachusetts Univ. Med. Center, Worcester, MA, USA

Volume

40

Issue

2

fYear

1993

fDate

4/1/1993 12:00:00 AM

Firstpage

179

Lastpage

185

Abstract

Results from a Monte Carlo investigation of the dual photopeak window (DPW) scatter correction method are presented for point and extended sources of Tc-99m in both homogeneous and nonhomogeneous attenuating media. The DPW method uses the ratio of counts in two nonoverlapping energy windows within the photopeak region as input to a regression relation. A pixel-by-pixel estimate of the scatter in the summed windows is obtained and subtracted to yield an estimate of the primary. An approximate tenfold decrease in the scatter fraction and an excellent agreement with the shape of the true scatter distribution were observed

Keywords

computerised tomography; radioactive sources; radioisotope scanning and imaging; radioisotopes; technetium; ^99mTc source; Monte Carlo; SPECT imaging; diagnostic nuclear medicine; dual photopeak window scatter correction method; extended sources; homogeneous attenuating media; nonhomogeneous attenuating media; point source; primary; scatter distribution; scatter fraction; Biomedical imaging; Cancer; Electromagnetic scattering; Energy resolution; Monte Carlo methods; Nonhomogeneous media; Particle scattering; Photonic crystals; Single photon emission computed tomography; Yield estimation;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.212338

Filename

212338