Development of a high resolution beta camera for a direct measurement of positron distribution on brain surface

Author

Yamamoto, S. ; Seki, C. ; Kashikura, K. ; Fujita, H. ; Matsuda, T. ; Ban, R. ; Kanno, I.

Author_Institution

Kobe City Coll. of Technol., Japan

Volume

44

Issue

4

fYear

1997

fDate

8/1/1997 12:00:00 AM

Firstpage

1538

Lastpage

1542

Abstract

We have developed and tested a high resolution beta camera for a direct measurement of positron distribution on the brain surface of animals. The beta camera consists of a thin CaF₂(Eu) scintillator, a tapered fiber optic plate (tapered fiber) and a position sensitive photomultiplier tube (PSPMT). The tapered fiber is the key component of the camera. We have developed two different sizes of beta cameras. One is 20 mm diameter field of view camera for imaging the brain surface of cats. The other is 10 mm diameter camera for that of rats. Spatial resolutions of the beta camera for cats and rats were 0.8 mm FWHM and 0.5 mm FWHM, respectively. We demonstrated that developed beta cameras may overcome the limitation of the spatial resolution of positron emission tomography (PET)

Keywords

biomedical equipment; brain; cameras; fibre optic sensors; gamma-ray detection; image resolution; medical image processing; photomultipliers; positron emission tomography; solid scintillation detectors; 10 mm; 20 mm; CaF₂:Eu; FWHM; PET; animals; brain surface; cats; direct measurement; field of view; high resolution beta camera; position sensitive photomultiplier tube; positron distribution; positron emission tomography; rats; spatial resolutions; tapered fiber optic plate; thin CaF₂(Eu) scintillator; Animals; Brain; Cameras; Cats; Optical fiber testing; Optical fibers; Photomultipliers; Positron emission tomography; Rats; Spatial resolution;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.632720

Filename

632720