Study on the use of transmission scans for whole body PET attenuation correction

Author

Chatziioannou, A. ; Dahlbom, M. ; Hoh, C.K.

Author_Institution

Div. of Nucl. Med., California Univ., Los Angeles, CA, USA

Volume

41

Issue

4

fYear

1994

fDate

8/1/1994 12:00:00 AM

Firstpage

1545

Lastpage

1550

Abstract

Transmission scans for attenuation correction of whole body PET studies are not acquired routinely, since noise considerations impose acquisition time constraints that make conventional scanning techniques infeasible. The aim of this work is to optimize data acquisition and processing parameters and improve the SNR of whole body transmission scans, in order to achieve within a reasonable time frame, an attenuation correction of the same quality as in cardiac PET. Methods to improve the scanner sensitivity by using additional coincidence planes, as well as smoothing methods for the randoms and the transmission data were investigated. Phantom and patient studies show that transmission scans are feasible for whole body PET studies, with equivalent noise introduced in the chest area as in a typical cardiac PET attenuation correction, at fractions of the time required by conventional transmission scan protocols

Keywords

computerised tomography; radioisotope scanning and imaging; acquisition time constraints; cardiac PET attenuation correction; chest area; coincidence planes; medical diagnostic imaging; noise considerations; nuclear medicine; patient studies; phantom studies; positron emission tomography; randoms; scanner sensitivity improvement methods; smoothing methods; transmission scans; whole body PET attenuation correction; Attenuation; Biomedical imaging; Data acquisition; Imaging phantoms; Noise reduction; Nuclear medicine; Protocols; Signal to noise ratio; Time factors; Whole-body PET;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.322946

Filename

322946