Development of a miniature gamma-ray endoscopic probe for tumor localization in nuclear medicine

Author

Watabe, H. ; Nakamura, T. ; Takahashi, H. ; Itoh, M. ; Matsumoto, M. ; Yamadera, A.

Author_Institution

Tohoku Univ., Sendai, Japan

Volume

40

Issue

2

fYear

1993

fDate

4/1/1993 12:00:00 AM

Firstpage

88

Lastpage

94

Abstract

Two types of miniature gamma-ray endoscopic probes developed for insertion into a body cavity to detect invisibly small or deeply located tumors are described. One is a single detector system using a small BGO (Bi₄Ge₃O₁₂) crystal connected with a fiber optic light guide, and the other is a dual detector system using a pair of single detector probes of the same size combined with a random coincidence technique. The performance of these detectors was tested by using a point source and a hollow cylindrical water phantom that simulated a body cavity. Measured and calculated results indicated that a dual detector system can be used for realistic tumor localization in a body cavity, and a single detector system may be applied only for the detection of tumors in which radiopharmaceuticals that emit gamma rays of energy below about 200 keV are accumulated

Keywords

biomedical equipment; gamma-ray apparatus; radioisotope scanning and imaging; scintillation counters; 200 keV; Bi₄Ge₃O₁₂; coincidence technique; dual detector system; fiber optic light guide; miniature gamma-ray endoscopic probes; nuclear medicine; radiopharmaceuticals; tumor localization; water phantom; Bismuth; Energy measurement; Gamma ray detection; Gamma ray detectors; Imaging phantoms; Neoplasms; Optical fibers; Probes; Testing; Water resources;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.212322

Filename

212322