Computed transaxial imaging using single gamma emitters

Emission computed tomography (ECT) studies were performed on test objects and dogs. Conjugate views were obtained for 60 to 120 projections equispaced around 360 degrees by rotation of the subjects in front of a gamma camera. A convolution reconstruction algorithm in which gamma ray attenuation corr...

Full description

Saved in:
Bibliographic Details
Published inRadiology Vol. 129; no. 1; p. 187
Main Authors Gustafson, D E, Berggren, M J, Singh, M, Dewanjee, M K
Format Journal Article
LanguageEnglish
Published United States 01.10.1978
Subjects
Animals
Diphosphates
Dogs
Evaluation Studies as Topic
Models, Structural
Myocardial Infarction - diagnostic imaging
Radionuclide Imaging
Technetium
Technology, Radiologic - instrumentation
Tomography, X-Ray Computed - methods
Online AccessGet more information

Cover

More Information
Summary:Emission computed tomography (ECT) studies were performed on test objects and dogs. Conjugate views were obtained for 60 to 120 projections equispaced around 360 degrees by rotation of the subjects in front of a gamma camera. A convolution reconstruction algorithm in which gamma ray attenuation corrections are included in the backprojection step were used to reconstruct the emission images. Reconstructions of x-ray transmission data provided data for gamma ray attenuation corrections of the emission images of 99mTc-pyrophosphate uptake in dogs. Reconstructed images of test objects show spatial resolution uniformity, and attenuation corrections enable estimation of relative activity densities to within 10--15% rms errors, thus demonstrating quantitative imaging capabilities of emission CT.
ISSN:0033-8419
DOI:10.1148/129.1.187