skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Detectors based on silicon photomultiplier arrays for medical imaging applications

Abstract

Silicon photomultipliers (SiPMs) have experienced a fast development and are now employed in different research fields. The availability of 2D arrays that provide information of the interaction position in the detector has had a high interest for medical imaging. Continuous crystals combined with segmented photodetectors can provide higher efficiency than pixellated crystals and very high spatial resolution. The IRIS group at IFIC is working on the development of detector heads based on continuous crystals coupled to SiPM arrays for different applications, including a small animal PET scanner in collaboration with the Univ. of Pisa and INFN Pisa, and a Compton telescope for dose monitoring in hadron therapy. (authors)

Authors:
; ; ; ;  [1];  [1];  [2]; ;  [1]; ;  [3]
  1. Instituto de Fisica Corpuscular - IFIC-CSIC/UVEG, Valencia (Spain)
  2. (Spain)
  3. Universite di Pisa, INFN Pisa, Pisa (Italy)
Publication Date:
OSTI Identifier:
22039863
Resource Type:
Conference
Resource Relation:
Conference: ANIMMA 2011: 2. International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and their Applications, Ghent (Belgium), 6-9 Jun 2011; Other Information: Country of input: France; 8 refs.; IEEE Catalog Number: CFP1124I-CDR
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 62 RADIOLOGY AND NUCLEAR MEDICINE; CRYSTALS; HADRONS; PHOTODETECTORS; PHOTOMULTIPLIERS; POSITRON COMPUTED TOMOGRAPHY; RADIATION DOSES; SI SEMICONDUCTOR DETECTORS; SPATIAL RESOLUTION; TELESCOPES; THERAPY

Citation Formats

Llosa, G., Barrio, J., Cabello, J., Lacasta, C., Oliver, J. F., Rafecas, M., Departamento de Fisica Atomica, Molecular Y Nuclear, Universitat de Valencia, Valencia, Stankova, V., Solaz, C., Bisogni, M. G., and Del Guerra, A. Detectors based on silicon photomultiplier arrays for medical imaging applications. United States: N. p., 2011. Web. doi:10.1109/ANIMMA.2011.6172967.
Llosa, G., Barrio, J., Cabello, J., Lacasta, C., Oliver, J. F., Rafecas, M., Departamento de Fisica Atomica, Molecular Y Nuclear, Universitat de Valencia, Valencia, Stankova, V., Solaz, C., Bisogni, M. G., & Del Guerra, A. Detectors based on silicon photomultiplier arrays for medical imaging applications. United States. doi:10.1109/ANIMMA.2011.6172967.
Llosa, G., Barrio, J., Cabello, J., Lacasta, C., Oliver, J. F., Rafecas, M., Departamento de Fisica Atomica, Molecular Y Nuclear, Universitat de Valencia, Valencia, Stankova, V., Solaz, C., Bisogni, M. G., and Del Guerra, A. Fri . "Detectors based on silicon photomultiplier arrays for medical imaging applications". United States. doi:10.1109/ANIMMA.2011.6172967.
@article{osti_22039863,
title = {Detectors based on silicon photomultiplier arrays for medical imaging applications},
author = {Llosa, G. and Barrio, J. and Cabello, J. and Lacasta, C. and Oliver, J. F. and Rafecas, M. and Departamento de Fisica Atomica, Molecular Y Nuclear, Universitat de Valencia, Valencia and Stankova, V. and Solaz, C. and Bisogni, M. G. and Del Guerra, A.},
abstractNote = {Silicon photomultipliers (SiPMs) have experienced a fast development and are now employed in different research fields. The availability of 2D arrays that provide information of the interaction position in the detector has had a high interest for medical imaging. Continuous crystals combined with segmented photodetectors can provide higher efficiency than pixellated crystals and very high spatial resolution. The IRIS group at IFIC is working on the development of detector heads based on continuous crystals coupled to SiPM arrays for different applications, including a small animal PET scanner in collaboration with the Univ. of Pisa and INFN Pisa, and a Compton telescope for dose monitoring in hadron therapy. (authors)},
doi = {10.1109/ANIMMA.2011.6172967},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jul 01 00:00:00 EDT 2011},
month = {Fri Jul 01 00:00:00 EDT 2011}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share:
  • Two dimensional hydrogenated amorphous silicon (a-Si:H) pixel arrays are good candidates as flat-panel imagers for applications in medical imaging. Various performance characteristics of these imagers are reviewed and compared with currently used equipments. An important component in the a-Si:H imager is the scintillator screen. A new approach for fabrication of high resolution CsI(Tl) scintillator layers, appropriate for coupling to a-Si:H arrays, are presented. For nuclear medicine applications, a new a-Si:H based gamma camera is introduced and Monte Carlo simulation is used to evaluate its performance.
  • We have developed and characterized large volume amorphous (a-) selenium (Se) stabilized alloys for room temperature medical imaging devices and high-energy physics detectors. The synthesis and preparation of well-defined and high quality a-Se (B, As, Cl) alloy materials have been conducted using a specially designed alloying reactor at EIC and installed in an argon atmosphere glove box. The alloy composition has been precisely controlled and optimized to ensure good device performance. The synthesis of large volume boron (B) doped (natural and isotopic 10B) a-Se (As, Cl) alloys has been carried out by thoroughly mixing vacuum distilled and zone-refined (ZR) Semore » with previously synthesized Se-As master alloys, Se-Cl master alloys and B. The synthesized a-Se (B, As, Cl) alloys have been characterized by x-ray diffraction (XRD), differential scanning calorimetry (DSC), Fourier transform infra-red spectroscopy (FTIR), x-ray photoelectron spectroscopy (XPS), inductively coupled plasma mass spectroscopy (ICP-MS), and detector testing. The a- Se alloys have shown high promise for x-ray detectors with its high dark resistivity (1010-1013 cm), good charge transport properties, and cost-effective large area scalability. Details of various steps about detector fabrication and testing of these imaging devices are also presented.« less
  • In recent years, medical imaging technology has made significant process, and now it plays an important role in medicine and biology. In the field of nuclear medicine, scintillation detectors are widely used as gamma-ray sensors, so that a photomultiplier tube (PMT) is a key component. For it works as a converter from scintillation light to electronic signal with keeping information on gamma-ray energy, time and position on the scintillation event. In positron emission tomography (PET), severe requirements are imposed to PMT's. For high spatial resolution PET, the size and shape should be appropriate to provide a detector ring having closelymore » packed small scintillation crystals. For time-of-flight (TOF) PET, fast timing and high sensitivity for ultra-violet (UV) light are essential needs. At Hamamatsu, the authors have developed more than twenty kinds of PMT's for the PET applications including TOF-PET in this decade. In this paper these major developments of PMT's for the medical imaging are reviewed and the present state of the art is discussed.« less
  • New position sensitive photomultiplier tubes with fine mesh structured dynodes and discrete anode array configurations have been developed. One kind of the position sensitive photomultiplier tubes is being used as a photodetector for High Enegy Physics applications in high magnetic field environments. A photomultiplier tube constructed with 88 Multi-Anodes has a spatial resolution of less than 2.6 mm in FWHM in a magnetic field with a density of 500-2000 Gauss. The resolution includes an anode width of 2.6 mm. Another type of Multi-Anode photomultiplier tube which has been developed is the detector with a high spatial resolution for such applicationsmore » as the PET system and hodoscope in scintillation systems. The tube, by applying additional electro-focusing electrodes, has an intrinsic spatial resolution of 1.4 mm in FWHM without the magnetic field.« less
  • New type of photomultiplier tubes (PMTs) have been developed for the applications to high energy physics experiments, medical instruments and biophysics experiments. Remarkable features of these PMTs are fast time response and gating function, immunity to the magnetic field, position sensitivity, good pulse height resolution and so on. The performances and the test results of these PMTs are discussed in this paper.