WO2004081606A8 - Improved gamma-ray camera system - Google Patents

Improved gamma-ray camera system

Info

Publication number
WO2004081606A8
WO2004081606A8 PCT/GB2004/000982 GB2004000982W WO2004081606A8 WO 2004081606 A8 WO2004081606 A8 WO 2004081606A8 GB 2004000982 W GB2004000982 W GB 2004000982W WO 2004081606 A8 WO2004081606 A8 WO 2004081606A8
Authority
WO
WIPO (PCT)
Prior art keywords
gamma
ray camera
camera system
pixel
processing component
Prior art date
Application number
PCT/GB2004/000982
Other languages
French (fr)
Other versions
WO2004081606A1 (en
Inventor
David Ramsden
Original Assignee
Symetrica Ltd
David Ramsden
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 Symetrica Ltd, David Ramsden filed Critical Symetrica Ltd
Priority to US10/548,985 priority Critical patent/US7504635B2/en
Priority to EP04718683A priority patent/EP1601992A1/en
Publication of WO2004081606A1 publication Critical patent/WO2004081606A1/en
Publication of WO2004081606A8 publication Critical patent/WO2004081606A8/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
    • G01T1/1644—Static instruments for imaging the distribution of radioactivity in one or two dimensions using one or several scintillating elements; Radio-isotope cameras using an array of optically separate scintillation elements permitting direct location of scintillations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • 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
    • 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
    • G01T1/20—Measuring radiation intensity with scintillation detectors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/42—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis
    • A61B6/4208—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector
    • A61B6/4258—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with 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

Abstract

A scintillator crystal (26) based gamma-ray camera system is described. The gamma-ray camera system includes. a spectra processing component for (34) providing improved energy resolution over that seen in conventional gamma-ray camera systems. The spectra processing component operates to deconvolve detector response functions from observed energy spectra on a pixel by pixel basis. The pixel dependent to detector response functions are obtained by a combination of theoretical simulation, and empirical calibration. By deconvolving pixel specific detector response functions, variations in response of a gamma-ray camera system across its image plane can be accounted for. This offers significant improvements in energy resolution and many of the problems associated with conventional gamma-ray camera systems are reduced. For example, the improved energy resolution allows better rejection of photons associated with Compton scattering events occurring in a source being imaged. This is because a narrower energy window filter can be used without rejecting a significant fraction of non-Compton scattered photons. The spectra processing component can be easily implemented with different types of gamma-ray imagers, for example Anger-type cameras, and may also be retroactively fitted to existing gamma-ray camera systems.
PCT/GB2004/000982 2003-03-11 2004-03-09 Improved gamma-ray camera system WO2004081606A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US10/548,985 US7504635B2 (en) 2003-03-11 2004-03-09 Gamma-ray camera system
EP04718683A EP1601992A1 (en) 2003-03-11 2004-03-09 Improved gamma-ray camera system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0305555A GB2401766B (en) 2003-03-11 2003-03-11 Improved gamma-ray camera system
GB0305555.5 2003-03-11

Publications (2)

Publication Number Publication Date
WO2004081606A1 WO2004081606A1 (en) 2004-09-23
WO2004081606A8 true WO2004081606A8 (en) 2005-01-13

Family

ID=9954551

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2004/000982 WO2004081606A1 (en) 2003-03-11 2004-03-09 Improved gamma-ray camera system

Country Status (4)

Country Link
US (1) US7504635B2 (en)
EP (1) EP1601992A1 (en)
GB (1) GB2401766B (en)
WO (1) WO2004081606A1 (en)

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WO2009020866A1 (en) * 2007-08-03 2009-02-12 Pulsetor, Llc Adapting a high-performance pulse processor to an existing spectrometry system
US7807973B2 (en) * 2008-08-01 2010-10-05 Pulsetor, Llc Pileup rejection in an energy-dispersive radiation spectrometry system
US8173954B2 (en) * 2008-12-30 2012-05-08 Saint-Gobain Ceramics & Plastics, Inc. Detector for use in well-logging applications
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US8384015B2 (en) * 2009-12-23 2013-02-26 General Electric Company Calibration source and methods for calibrating a nuclear medicine imaging system
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US9329302B2 (en) * 2012-09-27 2016-05-03 Schlumberger Technology Corporation Use of spectral information to extend temperature range of gamma-ray detector
GB201221124D0 (en) 2012-11-23 2013-01-09 Kromek Ltd Method of spectral data detection and manipulation
WO2015070008A1 (en) 2013-11-08 2015-05-14 Schlumberger Canada Limited Spectral analysis with spectrum deconvolution
EP3066426B1 (en) 2013-11-08 2022-04-13 Services Pétroliers Schlumberger Flow regime recognition for flow model adaptation
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US11744528B2 (en) 2018-08-07 2023-09-05 Siemens Medical Solutions Usa, Inc. Adaptive Compton camera for medical imaging
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JP7179958B2 (en) 2018-08-07 2022-11-29 シーメンス メディカル ソリューションズ ユーエスエー インコーポレイテッド Compton camera with segmented detection module
FR3087035B1 (en) * 2018-10-09 2020-10-30 Commissariat Energie Atomique PROCESS FOR CORRECTING A SPECTRAL IMAGE
CN112925007B (en) * 2021-01-29 2022-11-18 明峰医疗系统股份有限公司 Measuring method and system of PET detector and computer readable storage medium

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Also Published As

Publication number Publication date
EP1601992A1 (en) 2005-12-07
GB2401766A (en) 2004-11-17
GB2401766B (en) 2006-03-15
US20060180767A1 (en) 2006-08-17
US7504635B2 (en) 2009-03-17
GB0305555D0 (en) 2003-04-16
WO2004081606A1 (en) 2004-09-23

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