engleski

A whole body counter for in vivo measurement of radioactivity

A special slit collimator for 10x10x40 cm NaTl(Tl) detector for the Model 2260 Canberra Accuscan shadow shield whole body counter was designed to enable better determination of radioactivity distribution in the subject and measurement of higher diagnostic activities. Characteristics of the whole body counter (spatial resolution, counting efficiency, background, geometric uniformity) with and without collimator were studied my measuring gamma reference sources in air and in phantoms and by performing in vivo studies. The use of the collimator greatly improves spatial resolution and enables measurement of higher activities without losses. Whole body counting has therefore been established as one of the comparative methods for different clinical purposes.

whole body counter; radioactivity measurements

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