Depth of /spl gamma/-ray interaction within continuous crystals from the width of its scintillation light-distribution
We have studied a new and inexpensive method of measuring the depth of interaction (DOI) in /spl gamma/-ray detectors with large-sized scintillation crystals. This method takes advantage of the strong correlation between the width of the undisturbed light-distribution in continuous crystals and the...
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| Veröffentlicht in: | IEEE transactions on nuclear science 2005-06, Vol.52 (3), p.560-572 |
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| creator | Lerche, C.W. Benlloch, J.M. Sanchez, F. Pavon, N. Escat, B. Gimenez, E.N. Fernandez, M. Torres, I. Gimenez, M. Sebastia, A. Martinez, J. |
| description | We have studied a new and inexpensive method of measuring the depth of interaction (DOI) in /spl gamma/-ray detectors with large-sized scintillation crystals. This method takes advantage of the strong correlation between the width of the undisturbed light-distribution in continuous crystals and the /spl gamma/-ray's DOI. In order to quantify the dependence of the distribution's width with respect to the DOI, we first studied an analytical model of the light-distribution and tested it by means of Monte Carlo (MC) simulations of the light transport inside the crystal. Further we present an inexpensive modification of the commonly used charge division circuit that allows analog and instantaneous computation of the light-distribution's second moment without affecting the determination of the centroid. This redesigned resistor network is based on the position-sensitive proportional counter (DPC) readout and allows, together with position sensitive photo-detectors, the additional measurement of the light-distribution's standard-deviation /spl sigma/. We tested the proposed circuit using the design-tool OrCAD and found the signal sufficiently large for digitalization. Finally, we conducted MC simulations of a realistic Positron Emission Tomography (PET) detector module setup that mimic a continuous Lu/sub 2/SiO/sub 5/:Ce/sup 3+/ (LSO) crystal of dimensions 40/spl times/40/spl times/10 mm/sup 3/ together with the new large area position-sensitive photo multiplier tube (PSPMT) H8500 from Hamamatsu. The influence of Compton scattering on the DOI determination was also estimated by MC simulations. Altogether, we obtained /spl les/ 5 mm DOI resolution. PACS: 87.57.Ce, 87.58.Fg, 87.62.+n, 07.85.-m. |
| doi_str_mv | 10.1109/TNS.2005.851424 |
| format | Article |
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This method takes advantage of the strong correlation between the width of the undisturbed light-distribution in continuous crystals and the /spl gamma/-ray's DOI. In order to quantify the dependence of the distribution's width with respect to the DOI, we first studied an analytical model of the light-distribution and tested it by means of Monte Carlo (MC) simulations of the light transport inside the crystal. Further we present an inexpensive modification of the commonly used charge division circuit that allows analog and instantaneous computation of the light-distribution's second moment without affecting the determination of the centroid. This redesigned resistor network is based on the position-sensitive proportional counter (DPC) readout and allows, together with position sensitive photo-detectors, the additional measurement of the light-distribution's standard-deviation /spl sigma/. We tested the proposed circuit using the design-tool OrCAD and found the signal sufficiently large for digitalization. Finally, we conducted MC simulations of a realistic Positron Emission Tomography (PET) detector module setup that mimic a continuous Lu/sub 2/SiO/sub 5/:Ce/sup 3+/ (LSO) crystal of dimensions 40/spl times/40/spl times/10 mm/sup 3/ together with the new large area position-sensitive photo multiplier tube (PSPMT) H8500 from Hamamatsu. The influence of Compton scattering on the DOI determination was also estimated by MC simulations. Altogether, we obtained /spl les/ 5 mm DOI resolution. PACS: 87.57.Ce, 87.58.Fg, 87.62.+n, 07.85.-m.</description><identifier>ISSN: 0018-9499</identifier><identifier>EISSN: 1558-1578</identifier><identifier>DOI: 10.1109/TNS.2005.851424</identifier><identifier>CODEN: IETNAE</identifier><language>eng</language><publisher>IEEE</publisher><subject>Analytical models ; Circuit simulation ; Circuit testing ; Computational modeling ; Continuous scintillator ; Crystals ; depth of interaction (DOI) ; DPC readout ; gamma detector ; Gamma ray detection ; Gamma ray detectors ; light-distribution ; Monte Carlo methods ; Positron emission tomography ; Positron Emission Tomography (PET) ; Solid scintillation detectors</subject><ispartof>IEEE transactions on nuclear science, 2005-06, Vol.52 (3), p.560-572</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c2032-2529d73e1349180c1da26dfd049009a9d9bf573ac7411780a877e4b998bb6e8c3</citedby><cites>FETCH-LOGICAL-c2032-2529d73e1349180c1da26dfd049009a9d9bf573ac7411780a877e4b998bb6e8c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/1487684$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,776,780,792,27901,27902,54733</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/1487684$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Lerche, C.W.</creatorcontrib><creatorcontrib>Benlloch, J.M.</creatorcontrib><creatorcontrib>Sanchez, F.</creatorcontrib><creatorcontrib>Pavon, N.</creatorcontrib><creatorcontrib>Escat, B.</creatorcontrib><creatorcontrib>Gimenez, E.N.</creatorcontrib><creatorcontrib>Fernandez, M.</creatorcontrib><creatorcontrib>Torres, I.</creatorcontrib><creatorcontrib>Gimenez, M.</creatorcontrib><creatorcontrib>Sebastia, A.</creatorcontrib><creatorcontrib>Martinez, J.</creatorcontrib><title>Depth of /spl gamma/-ray interaction within continuous crystals from the width of its scintillation light-distribution</title><title>IEEE transactions on nuclear science</title><addtitle>TNS</addtitle><description>We have studied a new and inexpensive method of measuring the depth of interaction (DOI) in /spl gamma/-ray detectors with large-sized scintillation crystals. This method takes advantage of the strong correlation between the width of the undisturbed light-distribution in continuous crystals and the /spl gamma/-ray's DOI. In order to quantify the dependence of the distribution's width with respect to the DOI, we first studied an analytical model of the light-distribution and tested it by means of Monte Carlo (MC) simulations of the light transport inside the crystal. Further we present an inexpensive modification of the commonly used charge division circuit that allows analog and instantaneous computation of the light-distribution's second moment without affecting the determination of the centroid. This redesigned resistor network is based on the position-sensitive proportional counter (DPC) readout and allows, together with position sensitive photo-detectors, the additional measurement of the light-distribution's standard-deviation /spl sigma/. We tested the proposed circuit using the design-tool OrCAD and found the signal sufficiently large for digitalization. Finally, we conducted MC simulations of a realistic Positron Emission Tomography (PET) detector module setup that mimic a continuous Lu/sub 2/SiO/sub 5/:Ce/sup 3+/ (LSO) crystal of dimensions 40/spl times/40/spl times/10 mm/sup 3/ together with the new large area position-sensitive photo multiplier tube (PSPMT) H8500 from Hamamatsu. The influence of Compton scattering on the DOI determination was also estimated by MC simulations. Altogether, we obtained /spl les/ 5 mm DOI resolution. PACS: 87.57.Ce, 87.58.Fg, 87.62.+n, 07.85.-m.</description><subject>Analytical models</subject><subject>Circuit simulation</subject><subject>Circuit testing</subject><subject>Computational modeling</subject><subject>Continuous scintillator</subject><subject>Crystals</subject><subject>depth of interaction (DOI)</subject><subject>DPC readout</subject><subject>gamma detector</subject><subject>Gamma ray detection</subject><subject>Gamma ray detectors</subject><subject>light-distribution</subject><subject>Monte Carlo methods</subject><subject>Positron emission tomography</subject><subject>Positron Emission Tomography (PET)</subject><subject>Solid scintillation detectors</subject><issn>0018-9499</issn><issn>1558-1578</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpFkE1PxCAQhonRxHX17MELJ2_dAoUFjmb9TIweXM-EUrrF9Eugmv33stbE02QmzzOZeQG4xGiFMZL59uVtRRBiK8EwJfQILDBjIsOMi2OwQAiLTFIpT8FZCB-ppQyxBfi6tWNs4FDDPIwt3Omu03nm9R66PlqvTXRDD79dbFwPzdBH10_DFKDx-xB1G2Dthw7Gxiammhe5GGAwSXdtq3_11u2amFUuRO_K6TA6Byd1su3FX12C9_u77eYxe359eNrcPGeGoIJkhBFZ8cLigkoskMGVJuuqrhCVCEktK1nWjBfacIoxF0gLzi0tpRRlubbCFEtwPe8d_fA52RBV54Kx6bDepjcUEQhLKkgC8xk0fgjB21qN3nXa7xVG6pCvSvmqQ75qzjcZV7PhrLX_NBV8LWjxAzsueIY</recordid><startdate>200506</startdate><enddate>200506</enddate><creator>Lerche, C.W.</creator><creator>Benlloch, J.M.</creator><creator>Sanchez, F.</creator><creator>Pavon, N.</creator><creator>Escat, B.</creator><creator>Gimenez, E.N.</creator><creator>Fernandez, M.</creator><creator>Torres, I.</creator><creator>Gimenez, M.</creator><creator>Sebastia, A.</creator><creator>Martinez, J.</creator><general>IEEE</general><scope>97E</scope><scope>RIA</scope><scope>RIE</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>200506</creationdate><title>Depth of /spl gamma/-ray interaction within continuous crystals from the width of its scintillation light-distribution</title><author>Lerche, C.W. ; Benlloch, J.M. ; Sanchez, F. ; Pavon, N. ; Escat, B. ; Gimenez, E.N. ; Fernandez, M. ; Torres, I. ; Gimenez, M. ; Sebastia, A. ; Martinez, J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2032-2529d73e1349180c1da26dfd049009a9d9bf573ac7411780a877e4b998bb6e8c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Analytical models</topic><topic>Circuit simulation</topic><topic>Circuit testing</topic><topic>Computational modeling</topic><topic>Continuous scintillator</topic><topic>Crystals</topic><topic>depth of interaction (DOI)</topic><topic>DPC readout</topic><topic>gamma detector</topic><topic>Gamma ray detection</topic><topic>Gamma ray detectors</topic><topic>light-distribution</topic><topic>Monte Carlo methods</topic><topic>Positron emission tomography</topic><topic>Positron Emission Tomography (PET)</topic><topic>Solid scintillation detectors</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lerche, C.W.</creatorcontrib><creatorcontrib>Benlloch, J.M.</creatorcontrib><creatorcontrib>Sanchez, F.</creatorcontrib><creatorcontrib>Pavon, N.</creatorcontrib><creatorcontrib>Escat, B.</creatorcontrib><creatorcontrib>Gimenez, E.N.</creatorcontrib><creatorcontrib>Fernandez, M.</creatorcontrib><creatorcontrib>Torres, I.</creatorcontrib><creatorcontrib>Gimenez, M.</creatorcontrib><creatorcontrib>Sebastia, A.</creatorcontrib><creatorcontrib>Martinez, J.</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998–Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>IEEE transactions on nuclear science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Lerche, C.W.</au><au>Benlloch, J.M.</au><au>Sanchez, F.</au><au>Pavon, N.</au><au>Escat, B.</au><au>Gimenez, E.N.</au><au>Fernandez, M.</au><au>Torres, I.</au><au>Gimenez, M.</au><au>Sebastia, A.</au><au>Martinez, J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Depth of /spl gamma/-ray interaction within continuous crystals from the width of its scintillation light-distribution</atitle><jtitle>IEEE transactions on nuclear science</jtitle><stitle>TNS</stitle><date>2005-06</date><risdate>2005</risdate><volume>52</volume><issue>3</issue><spage>560</spage><epage>572</epage><pages>560-572</pages><issn>0018-9499</issn><eissn>1558-1578</eissn><coden>IETNAE</coden><abstract>We have studied a new and inexpensive method of measuring the depth of interaction (DOI) in /spl gamma/-ray detectors with large-sized scintillation crystals. This method takes advantage of the strong correlation between the width of the undisturbed light-distribution in continuous crystals and the /spl gamma/-ray's DOI. In order to quantify the dependence of the distribution's width with respect to the DOI, we first studied an analytical model of the light-distribution and tested it by means of Monte Carlo (MC) simulations of the light transport inside the crystal. Further we present an inexpensive modification of the commonly used charge division circuit that allows analog and instantaneous computation of the light-distribution's second moment without affecting the determination of the centroid. This redesigned resistor network is based on the position-sensitive proportional counter (DPC) readout and allows, together with position sensitive photo-detectors, the additional measurement of the light-distribution's standard-deviation /spl sigma/. We tested the proposed circuit using the design-tool OrCAD and found the signal sufficiently large for digitalization. Finally, we conducted MC simulations of a realistic Positron Emission Tomography (PET) detector module setup that mimic a continuous Lu/sub 2/SiO/sub 5/:Ce/sup 3+/ (LSO) crystal of dimensions 40/spl times/40/spl times/10 mm/sup 3/ together with the new large area position-sensitive photo multiplier tube (PSPMT) H8500 from Hamamatsu. The influence of Compton scattering on the DOI determination was also estimated by MC simulations. Altogether, we obtained /spl les/ 5 mm DOI resolution. PACS: 87.57.Ce, 87.58.Fg, 87.62.+n, 07.85.-m.</abstract><pub>IEEE</pub><doi>10.1109/TNS.2005.851424</doi><tpages>13</tpages></addata></record> |
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| subjects | Analytical models Circuit simulation Circuit testing Computational modeling Continuous scintillator Crystals depth of interaction (DOI) DPC readout gamma detector Gamma ray detection Gamma ray detectors light-distribution Monte Carlo methods Positron emission tomography Positron Emission Tomography (PET) Solid scintillation detectors |
| title | Depth of /spl gamma/-ray interaction within continuous crystals from the width of its scintillation light-distribution |
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