We are developing a positron emission mammograph imaging system that consists of 2 planar heads (10 x 10 cm 2), each composed of 4 matrices (5 x 5 cm(2)) of scintillating crystals coupled to the same number of multi-anode PMT (Hamamatsu H8500). We are developing a readout scheme which handles the 4 x 64 output signals of each head. We are primarily interested in charge multiplexed readout schemes. The measurements presented in this paper highlight the limits of a multiplexed readout using a discretized positioning circuit (DPC) by comparison with results using either another multiplexed scheme based on symmetric charge division (SCD) or a multi-anode readout. The measurements have been performed with the H8500 PMT coupled to pixelated NaI(Tl) and YAP crystals. (c) 2006 Elsevier B.V. All rights reserved.
Preliminary study of different readout strategies for a positron emission mammograph head
BELCARI, NICOLA;DEL GUERRA, ALBERTO;
2006-01-01
Abstract
We are developing a positron emission mammograph imaging system that consists of 2 planar heads (10 x 10 cm 2), each composed of 4 matrices (5 x 5 cm(2)) of scintillating crystals coupled to the same number of multi-anode PMT (Hamamatsu H8500). We are developing a readout scheme which handles the 4 x 64 output signals of each head. We are primarily interested in charge multiplexed readout schemes. The measurements presented in this paper highlight the limits of a multiplexed readout using a discretized positioning circuit (DPC) by comparison with results using either another multiplexed scheme based on symmetric charge division (SCD) or a multi-anode readout. The measurements have been performed with the H8500 PMT coupled to pixelated NaI(Tl) and YAP crystals. (c) 2006 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
