WO2002025310A3 - Scintillation crystal assembly with reduced detection of scatter radiation - Google Patents

Scintillation crystal assembly with reduced detection of scatter radiation Download PDF

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Publication number
WO2002025310A3
WO2002025310A3 PCT/US2001/029699 US0129699W WO0225310A3 WO 2002025310 A3 WO2002025310 A3 WO 2002025310A3 US 0129699 W US0129699 W US 0129699W WO 0225310 A3 WO0225310 A3 WO 0225310A3
Authority
WO
WIPO (PCT)
Prior art keywords
light guide
scintillation crystal
gamma rays
scintillation
light
Prior art date
Application number
PCT/US2001/029699
Other languages
French (fr)
Other versions
WO2002025310A2 (en
Inventor
Frank P Difilippo
Original Assignee
Koninkl Philips Electronics Nv
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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Priority to EP01979272A priority Critical patent/EP1297360A2/en
Priority to JP2002529256A priority patent/JP2004510139A/en
Priority to IL14974501A priority patent/IL149745A0/en
Publication of WO2002025310A2 publication Critical patent/WO2002025310A2/en
Publication of WO2002025310A3 publication Critical patent/WO2002025310A3/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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/29—Measurement performed on radiation beams, e.g. position or section of the beam; Measurement of spatial distribution of radiation
    • G01T1/2914—Measurement of spatial distribution of radiation
    • G01T1/2985—In depth localisation, e.g. using positron emitters; Tomographic imaging (longitudinal and transverse section imaging; apparatus for radiation diagnosis sequentially in different planes, steroscopic radiation diagnosis)
    • 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
    • A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/03—Computerised tomographs
    • A61B6/037—Emission tomography

Abstract

A scintillation crystal (20) of a scintillation camera (10) is mounted on a first side of a light guide (18). Light detectors (22) are mounted on a second side of the light guide (18). The light guide (18) includes a chemical element having an atomic number greater than or equal to 40. Preferably, the chemical element is a glass material including oxides of at least one of barium, lanthanum, and lead. Gamma rays in the 70 to 600 keV range are photo electrically absorbed in the scintillation crystal resulting in the emission of light. A significant portion of the gamma rays, particularly gamma rays over 300 keV pass through the scintillation crystal and interact with the light guide. When the light guide has a 7 ≥ 40, the primary interaction is photo electric absorption. When the light guide has a low-Z, a significant portion of the gamma rays are Compton scattered, some back into the scintillation crystal causing detrimental secondary scintillation events.
PCT/US2001/029699 2000-09-22 2001-09-21 Scintillation crystal assembly with reduced detection of scatter radiation WO2002025310A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP01979272A EP1297360A2 (en) 2000-09-22 2001-09-21 Scintillation crystal assembly with reduced detection of scatter radiation
JP2002529256A JP2004510139A (en) 2000-09-22 2001-09-21 Scintillation crystal assembly with reduced detection of scattered radiation
IL14974501A IL149745A0 (en) 2000-09-22 2001-09-21 Scintillation crystal assembly with reduced detection of scatter radiation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US66822600A 2000-09-22 2000-09-22
US09/668,226 2000-09-22

Publications (2)

Publication Number Publication Date
WO2002025310A2 WO2002025310A2 (en) 2002-03-28
WO2002025310A3 true WO2002025310A3 (en) 2002-11-28

Family

ID=24681484

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/029699 WO2002025310A2 (en) 2000-09-22 2001-09-21 Scintillation crystal assembly with reduced detection of scatter radiation

Country Status (4)

Country Link
EP (1) EP1297360A2 (en)
JP (1) JP2004510139A (en)
IL (1) IL149745A0 (en)
WO (1) WO2002025310A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101175697B1 (en) 2010-07-02 2012-08-21 서강대학교산학협력단 Method of improving LCE and linearity of relationship between gamma-ray's energy and the number of photons impinged on photosensor array in PET module
WO2023069513A1 (en) * 2021-10-19 2023-04-27 The Regents Of The University Of California Collimatorless combined compton and proximity imaging technology

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58129379A (en) * 1982-01-29 1983-08-02 Shimadzu Corp Scintillation camera
US4532425A (en) * 1982-08-04 1985-07-30 Elscint Inc. Gamma camera with light guide having greater index of refraction

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58129379A (en) * 1982-01-29 1983-08-02 Shimadzu Corp Scintillation camera
US4532425A (en) * 1982-08-04 1985-07-30 Elscint Inc. Gamma camera with light guide having greater index of refraction

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 241 (P - 232) 26 October 1983 (1983-10-26) *

Also Published As

Publication number Publication date
EP1297360A2 (en) 2003-04-02
WO2002025310A2 (en) 2002-03-28
IL149745A0 (en) 2002-11-10
JP2004510139A (en) 2004-04-02

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