title: Development of a BaF2/TMAE PET system.
abstract: A detector has been developed for position sensitive registration of annihilation radiation. The 511 keV gamma rays are detected in a set of BaF2 scintillation crystals coupled to low pressure TMAE-filled photosensitive multi wire chambers. In a first experimental detector with two BaF2 crystals we obtained a detection efficiency for 511 keV quanta of 42%. The position resolution is 5 mm and the time resolution is 4 ns. At present a circular detector for three BaF2 crystals with a diameter of 28 cm, each with a thickness of 8 mm, is under construction. Position sensitivity is obtained by means of delayline read out of cathode wires. Detectors of this type can be used as building blocks for a PET system. We are performing simulations of a system consisting of six rectangular detectors in a hexagonal composition. Results are given and a discussion of further innovative developments is presented.
authors.affiliation: Department of Applied Physics, Delft University of Technology, The Netherlands.
authors.forename: C W
authors.initials: CW
authors.lastname: van Eijk
authors.forename: R W
authors.initials: RW
authors.lastname: Hollander
authors.forename: B
authors.initials: B
authors.lastname: Fischer
authors.forename: K J
authors.initials: KJ
authors.lastname: Leliveld
mesh_terms: D001464:Barium; D017609:Barium Compounds; D003460:Crystallization; D004566:Electrodes; D004867:Equipment Design; D005459:Fluorides; D005720:Gamma Rays; D012588:Scintillation Counting / Q000295:instrumentation*; D014055:Tomography, Emission-Computed / Q000295:instrumentation*
chemical_list: D017609:Barium Compounds; D001464:Barium; C055150:barium fluoride; D005459:Fluorides