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Updated: Jul 16, 2026

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

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

Published on: February 1, 2016

Development of a positron-imaging detector with background rejection capability.

Seiichi Yamamoto¹, Tatsuya Higashi, Keiichi Matsumoto

¹Department of Electrical Engineering, Kobe City College of Technology, 8-3 Gakuen-Higashi-machi, Nishi-ku, Kobe 651-2194, Japan. s-yama@kobe-kosen.ac.jp

Annals of Nuclear Medicine

|March 28, 2007

Summary

A new positron-imaging detector enhances intra-operative nuclear medicine. This F-18-fluorodeoxyglucose (FDG)-guided surgery tool offers background rejection for improved surgical accuracy.

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Neutron Radiography and Computed Tomography of Biological Systems at the Oak Ridge National Laboratory's High Flux Isotope Reactor

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Published on: May 7, 2021

Area of Science:

Nuclear Medicine
Medical Imaging
Surgical Instrumentation

Background:

Intra-operative probes are crucial in nuclear medicine.
F-18-fluorodeoxyglucose (FDG) shows promise for guided surgery.

Purpose of the Study:

Develop and test a positron-imaging detector for FDG-guided surgery.
Incorporate background rejection capabilities into the detector design.

Main Methods:

Utilized a phoswich scintillator array coupled to a multi-channel position-sensitive photomultiplier tube (PSPMT).
Employed pulse-shape analysis to differentiate positron events from background gamma events.
Integrated plastic scintillators for positron detection and BGO scintillators for annihilation photon detection.

Main Results:

Achieved spatial resolution with less than 20% spillover to neighboring pixels.
Demonstrated a low background count rate (<2 cps) in phantom studies.
The detector system successfully distinguished true positron events from background gamma events.

Conclusions:

The developed positron-imaging detector is suitable for FDG-guided surgery.
The background rejection capability enhances its utility in nuclear medicine applications.