This report describes the construction and performance characteristics of a device capable of making rapid serial measurement of rat brain radioactivity following the administration of a positron emitting isotope. Two bismuth germanate oxide (BGO) scintillation detectors in a coincidence detection circuit are used to achieve the necessary degree of collimation. Data from the device can be used ...

For two-dimensional scintillation detectors based on position-sensitive photomultipliers, a new PCI or cPCI unit has been developed. It aims at fast signal and data processing by the usage of advanced technologies like digital signal processors and field-programmable gate arrays. The main features of this design are described in this paper. Digital test measurements were carried out showing tha...

SICANE is a neutron scattering multidetector facility for the determination of the quenching factor (ratio of the response to nuclear recoils and to electrons) of cryogenic detectors used in direct WIMP searches. Well collimated monoenergetic neutron beams are obtained with inverse (p, n) reactions. The facility is described, and results obtained for the quenching factors of scintillation in Na...

The fluorescence detection systems currently in use for the measurement of EXAFS at the Daresbury Synchrotron Radiation Source are described. Each system consists of an array of NaI(T1) scintillation detectors. Methods of reducing the proportion of counts due to scatter are discussed. The advantages and problems associated with alternative detection systems are reviewed. Results are presented f...

introduction:surgeosight is a dedicated intra-operative hand-held gamma camera designed and manufactured by our team to be used for lymphoscintigraphy. although conventional gamma cameras are widely used, they lack the capability of the sentinel lymph node (sln) imaging in the operation room. like conventional gamma cameras it is necessary to calibrate surgeosight for linearity distortion, ener...

objective(s): the muller cell is the principal glial cell of the vertebrate retina. the expression of glial fibrillary acidic protein (gfap) in the muller cells was used as a cellular marker for retinal damage. this study was done to evaluate the effect of gestational diabetes on retinal muller cells in rat's offspring. materials and methods: in this experimental study, 12 wistar rat dams ...