The design and construction of a PET camera module with high sensitivity, full 3-D spatial reconstruction and very good energy resolution is presented. The basic principle consists of an axial arrangement of long scintillation crystals around the Field Of View (FOV), providing a measurement of the transverse coordinates of the interacting 511 keV gamma ray. On top of each layer of crystals, an array of Wave-Length Shifter (WLS) strips, which collect the light leaving the crystals sideways, is positioned orthogonal to the crystal direction. The signals in the WLS strips allow a precise measurement of the z (axial) co-ordinate of the 511 keV gamma-ray gamma impact. The construction of two modules used for demonstration of the concept is described. First preliminary results on spatial and energy resolution from one full module will be shown. (C) 2010 Elsevier B.V. All rights reserved.
Construction and tests of demonstrator modules for a 3-D axial PET system for brain or small animal imaging / P., Beltrame; E., Bolle; A., Braem; C., Casella; E., Chesi; N., Clinthorne; E., Cochran; R. d., Leo; G., Dissertori; G., Djambazov; V., Fanti; K., Honscheid; S., Huh; I., Johnson; C., Joram; H., Kagan; W., Lustermann; Meddi, Franco; E., Nappi; F., Nessi Tedaldi; J. f., Oliver; P., Pauss; M., Rafecas; D., Renker; A., Rudge; D., Schinzel; T., Schneider; J., Seguinot; S., Smith; P., Solevi; S., Stapnes; P., Weilhammer. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - STAMPA. - 636:1(2011), pp. S226-S230. (Intervento presentato al convegno 7th International Symposium on the Development and Application of Semiconductor Tracking Detectors tenutosi a Hiroshima, JAPAN nel AUG 29-SEP 01, 2009) [10.1016/j.nima.2010.04.115].
Construction and tests of demonstrator modules for a 3-D axial PET system for brain or small animal imaging
MEDDI, Franco;
2011
Abstract
The design and construction of a PET camera module with high sensitivity, full 3-D spatial reconstruction and very good energy resolution is presented. The basic principle consists of an axial arrangement of long scintillation crystals around the Field Of View (FOV), providing a measurement of the transverse coordinates of the interacting 511 keV gamma ray. On top of each layer of crystals, an array of Wave-Length Shifter (WLS) strips, which collect the light leaving the crystals sideways, is positioned orthogonal to the crystal direction. The signals in the WLS strips allow a precise measurement of the z (axial) co-ordinate of the 511 keV gamma-ray gamma impact. The construction of two modules used for demonstration of the concept is described. First preliminary results on spatial and energy resolution from one full module will be shown. (C) 2010 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
