Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/52138
Title: Position correction with depth of interaction information for a small animal PET system
Authors: Carles, Montserrat, Lerche, Christoph W., Sánchez, Filomeno J., Mora, Francisco José, Benlloch Baviera, José María
Issue Date: 2011
Publisher: Elsevier
Abstract: In this work we study the effects on the spatial resolution when depth of interaction (DOI) information is included in the parameterization of the line of response (LOR) for a small animal positron emission tomography (PET) system. One of the most important degrading factors for PET is the parallax error introduced in systems that do not provide DOI information of the recorded γ-rays. Our group has designed a simple and inexpensive method for DOI determination in continuous scintillation crystals. This method is based, on one hand, in the correlation between the scintillation light distribution width in monolithic crystals and the DOI, and, on the other hand, on a small modification of the widely applied charge dividing circuits (CDR). In this work we present a new system calibration that includes the DOI information, and also the development of the correction equations that relates the LOR without and with DOI information. We report the results obtained for different measurements along the transaxial field of view (FOV) and the image quality enhancement achieved specially at the edge of the FOV. © 2010 Elsevier B.V. All rights reserved.
URI: http://hdl.handle.net/10261/52138
Identifiers: doi: 10.1016/j.nima.2010.11.192
issn: 0168-9002
Citation: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 648: S176-S180 (2011)
Appears in Collections:(I3M) Artículos
(IFIC) Artículos

Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFView/Open
Show full item record
 
CSIC SFX LinksSFX Query

Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.