Corrections for Attenuation, Scattered Radiation, and Random Coincidences in a Ring Detector Positron Emission Transaxial Tomograph
- 1 January 1980
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Nuclear Science
- Vol. 27 (1), 549-554
- https://doi.org/10.1109/tns.1980.4330887
Abstract
The effect of attenuation, scattered radiation and random coincidences were evaluated in a positron camera with 95 NaI-detectors. Experimental tests and computer simulations were performed to find the contribution of the various effects to the number of counts in each detector channel. Images were then reconstructed with and without corrections for the different factors and the errors in the images were quantified. It is shown that accurate quantitative measurements of regional concentration of radionuclides necessitate a proper correction for the different factors.Keywords
This publication has 3 references indexed in Scilit:
- A Computer Assisted Ringdector Positron Camera System for Reconstruction Tomography of the BrainIEEE Transactions on Nuclear Science, 1978
- High Resolution Computed Tomography of Positron EmittersIEEE Transactions on Nuclear Science, 1977
- A Positron-Emission Transaxial Tomograph for Nuclear Imaging (PETT)Radiology, 1975