Three-dimensional imaging utilizing energy discrimination. I

Author

Gunter, Donald L. ; Hoffmann, Kenneth R. ; Beck, Robert N.

Author_Institution

Franklin McLean Memorial Res. Int., Chicago Univ., IL, USA

Volume

37

Issue

3

fYear

1990

fDate

6/1/1990 12:00:00 AM

Firstpage

1300

Lastpage

1307

Abstract

An algorithm is proposed for three-dimensional image reconstruction in nuclear medicine which uses scattered radiation rather than multiple projected images to determine the source depth within the body. Images taken from numerous energy windows are combined to construct the source distribution in the body. The gamma-ray camera is not moved during the imaging process. Experiments with both ^99mTc and ⁶⁷Ga demonstrate that two channels of depth information can be extracted from the low-energy images produced by scattered radiation. By combining this technique with standard SPECT (single-photon emission computed tomography) reconstruction using multiple projections, the authors anticipate much improved spatial resolution in the overall three-dimensional reconstruction

Keywords

computerised tomography; radioisotope scanning and imaging; ⁶⁷Ga; ^99mTc; SPECT; energy discrimination; low-energy images; multiple projections; nuclear medicine; scattered radiation; single-photon emission computed tomography; three-dimensional image reconstruction; Attenuation; Cameras; Electromagnetic scattering; Image reconstruction; Iterative algorithms; Nuclear medicine; Optical imaging; Particle scattering; Radiology; Single photon emission computed tomography;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.57380

Filename

57380