Small Field of view HpXe hybrid detector for scintigraphy

Resumo

The potential of the Portuguese idea, the Micro Hole and Strip Plate (MHSP) for medical imaging is discussed. Three major developments are in course: a low cost high energy and spatial resolution sensitive gamma detector based on a CsI- MHSP structure operating in high pressure xenon environment envisaging planar scintigraphy of small organs and tumours, and of small animals; an x-ray imaging detector also based on an MHSP operating in charge mode for single photon imaging; and a position sensitive visible gas photomultiplier (GPM) using the MHSP as part of the multiplication stage and also contributing for a strong reduction of the ion back flow to the photocathode, needed for GPMs. The latter can be combined with a solid scintillator, allowing several applications in nuclear medical imaging.