Abstract:
: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.
journal_name
Radiologyjournal_title
Radiologyauthors
Gustafson DE,Berggren MJ,Singh M,Dewanjee MKdoi
10.1148/129.1.187subject
Has Abstractpub_date
1978-10-01 00:00:00pages
187-94issue
1eissn
0033-8419issn
1527-1315journal_volume
129pub_type
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