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Updated: Jul 27, 2026

A Basic Positron Emission Tomography System Constructed to Locate a Radioactive Source in a Bi-dimensional Space
14:19

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Published on: February 1, 2016

A study on the extrinsic sensitivity and counting efficiency of a gamma camera for a cylindrical source and a

Rukiye Çakır Haliloğlu1, Özlem Karadeniz2, Hatice Durak3

  • 1Department of Medical Physics, Institute of Health Sciences, Dokuz Eylül University, 35340 İnciraltı, İzmir, Turkey.

Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine
|October 15, 2017
PubMed
Summary

This study on Technetium-99m (99mTc) found that thicker sources increase scatter fraction but decrease gamma camera efficiency and sensitivity. Increased distance enhances efficiency but reduces sensitivity.

Keywords:
Counting efficiencyCylindrical sourceExtrinsic sensitivityGamma cameraRectangular detectorScattered radiation effects

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