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Potential Advantages of a Cesium Fluoride Scintillator for a Time-of-Flight Positron Camera

Centre d'Études Nucléaire de Grenoble, Grenoble, France

Correspondence: For reprints contact: R. Allemand, MD, Chef de la Div. Elec. Nucleaire, Adjoint au chef du Lab. MCTE, Ave. des Martyre, 85X, 38041 Grenoble Cedex, France.

ABSTRACT

In order to improve the quality of positron tomographic imaging, a time-of-flight technique combined with a classical reconstruction method has been investigated. The decay time of NaI(Tl) and bismuth germanate (BGO) scintillators is too long for this application, and efficiency of the plastic scintillators is too low. Cesium fluoride appears to be a very promising detector material.

This paper presents preliminary results obtained with a time-of-flight technique using CsF scintillators. The expected advantages were realized.

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