WO2010080046A3 - High resolution gamma camera - Google Patents

High resolution gamma camera Download PDF

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Publication number
WO2010080046A3
WO2010080046A3 PCT/PT2010/000001 PT2010000001W WO2010080046A3 WO 2010080046 A3 WO2010080046 A3 WO 2010080046A3 PT 2010000001 W PT2010000001 W PT 2010000001W WO 2010080046 A3 WO2010080046 A3 WO 2010080046A3
Authority
WO
WIPO (PCT)
Prior art keywords
fibres
crystal
gamma
gamma ray
applications
Prior art date
Application number
PCT/PT2010/000001
Other languages
French (fr)
Other versions
WO2010080046A2 (en
Inventor
António Jorge VAZ DUARTE SOARES
Ian Derek Cullum
Original Assignee
Isa - Intelligent Sensing Anywhere, S.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Isa - Intelligent Sensing Anywhere, S.A. filed Critical Isa - Intelligent Sensing Anywhere, S.A.
Publication of WO2010080046A2 publication Critical patent/WO2010080046A2/en
Publication of WO2010080046A3 publication Critical patent/WO2010080046A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/16—Measuring radiation intensity
    • G01T1/161—Applications in the field of nuclear medicine, e.g. in vivo counting
    • G01T1/164—Scintigraphy
    • G01T1/1641—Static instruments for imaging the distribution of radioactivity in one or two dimensions using one or several scintillating elements; Radio-isotope cameras
    • G01T1/1642—Static instruments for imaging the distribution of radioactivity in one or two dimensions using one or several scintillating elements; Radio-isotope cameras using a scintillation crystal and position sensing photodetector arrays, e.g. ANGER cameras
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/42—Arrangements for detecting radiation specially adapted for radiation diagnosis
    • A61B6/4208—Arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector
    • A61B6/4258—Arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector for detecting non x-ray radiation, e.g. gamma radiation

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Measurement Of Radiation (AREA)
  • Nuclear Medicine (AREA)

Abstract

The invention described refers to a new Gamma Camera for gamma ray imaging applications, for example in Nuclear Medicine. The new Gamma Camera has an inorganic scintillation crystal (2), whose larger area surfaces are covered by wavelength shifting optical fibres (1). A gamma ray interaction within the crystal leads to the generation of a scintillation light pulse spatially confined. The fibres absorb the scintillation light and subsequently re-emit photons isotropically, with an emission spectrum different from its absorption spectrum. A fraction of the re-emitted photons is trapped within the fibres and channeled along its axis to be detected by silicon photomultipliers (Si-PMT) which are optically coupled to the ends of the fibres (3). The signals of the Si-PMTs, after electronic amplification and digitization, are used to calculate the center of gravity of the light signal detected, and thus estimate the position of interaction of the gamma rays within the crystal. The invention has applications in Nuclear Medicine and industrial applications for spatial mapping of gamma ray radiation.
PCT/PT2010/000001 2009-01-08 2010-01-06 High resolution gamma camera WO2010080046A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PT10432809A PT104328A (en) 2009-01-08 2009-01-08 HIGH RESOLUTION RANGE CAMERA
PT104328 2009-01-08

Publications (2)

Publication Number Publication Date
WO2010080046A2 WO2010080046A2 (en) 2010-07-15
WO2010080046A3 true WO2010080046A3 (en) 2011-07-07

Family

ID=42317031

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PT2010/000001 WO2010080046A2 (en) 2009-01-08 2010-01-06 High resolution gamma camera

Country Status (2)

Country Link
PT (1) PT104328A (en)
WO (1) WO2010080046A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014519025A (en) * 2011-05-10 2014-08-07 エバーハルト・カールス・ユニバーシタット テュービンゲン ユニバーシタットスクリニクム Gamma-ray detector based on Geiger mode avalanche photodiode
EP3479144A1 (en) 2016-06-29 2019-05-08 Siemens Medical Solutions USA, Inc. System and method to unpile overlapping pulses
US9945963B1 (en) 2017-08-01 2018-04-17 Siemens Medical Solutions Usa, Inc. Dynamic control of event dumping
CN108535765A (en) * 2018-04-20 2018-09-14 南开大学 A kind of radiation imaging apparatus and its implementation based on flash fiber
EP4200650A1 (en) * 2020-08-21 2023-06-28 Viken Detection Corporation X-ray detection structure and system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995030910A1 (en) * 1994-05-10 1995-11-16 Trustees Of Boston University Three-dimensional imaging detector employing wavelength-shifting optical fibers
WO2004081606A1 (en) * 2003-03-11 2004-09-23 Symetrica Limited Improved gamma-ray camera system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3011057A (en) 1958-01-02 1961-11-28 Hal O Anger Radiation image device
US7115875B1 (en) 2004-02-17 2006-10-03 Photodetection Systems, Inc. PET scanner with photodetectors and wavelength shifting fibers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995030910A1 (en) * 1994-05-10 1995-11-16 Trustees Of Boston University Three-dimensional imaging detector employing wavelength-shifting optical fibers
WO2004081606A1 (en) * 2003-03-11 2004-09-23 Symetrica Limited Improved gamma-ray camera system

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
BUZHAN P ET AL: "Silicon photomultiplier and its possible applications", NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH, SECTION - A:ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT, vol. 504, no. 1-3, 21 May 2003 (2003-05-21), ELSEVIER, AMSTERDAM, NL, pages 48 - 52, XP004426180, ISSN: 0168-9002, DOI: 10.1016/S0168-9002(03)00749-6 *
HERBERT ET AL.: "The silicon photomultiplier for application in PET", 6 December 2005 (2005-12-06), pages 33PP, XP002632374, Retrieved from the Internet <URL:http://www.iss.infn.it/congresso/prostate/list/Herbert_7_16_30.pdf> [retrieved on 20110412] *
SOARES J ET AL: "Development of a small gamma camera using wavelength-shifting fibres coupled to inorganic scintillation crystals for imaging 140 keV gamma rays", IEEE TRANSACTIONS ON NUCLEAR SCIENCE, vol. 46, no. 3, 1 June 1999 (1999-06-01), IEEE SERVICE CENTER, NEW YORK, NY, US, pages 576 - 582, XP011088391, ISSN: 0018-9499, DOI: 10.1109/23.775582 *

Also Published As

Publication number Publication date
WO2010080046A2 (en) 2010-07-15
PT104328A (en) 2010-07-08

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