Light emission efficiency and imaging performance of Gd2O2S:Eu powder scintillator under x‐ray radiography conditions
Purpose To evaluate Gd2O2S:Eu powder phosphor as a radiographic image receptor and to compare it to phosphors often used in radiography. Gd2O2S:Eu is nonhygroscopic, emitting red light with decay time close to that of Gd2O2S:Tb. Methods The light intensity emitted per unit of x‐ray exposure rate (ab...
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| Veröffentlicht in: | Medical physics (Lancaster) 2010-07, Vol.37 (7Part1), p.3694-3703 |
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| creator | Michail, C. M. Fountos, G. P. Liaparinos, P. F. Kalyvas, N. E. Valais, I. Kandarakis, I. S. Panayiotakis, G. S. |
| description | Purpose
To evaluate Gd2O2S:Eu powder phosphor as a radiographic image receptor and to compare it to phosphors often used in radiography. Gd2O2S:Eu is nonhygroscopic, emitting red light with decay time close to that of Gd2O2S:Tb.
Methods
The light intensity emitted per unit of x‐ray exposure rate (absolute luminescence efficiency) was measured for laboratory prepared screens with coating thicknesses of 33.1, 46.4, 63.1, 78.3, and 139.8mg/cm2 and tube voltages ranging from 50 to 140 kVp. Parameters related to image quality such as the modulation transfer function (MTF) and the detective quantum efficiency (DQE) were also experimentally examined. In addition, a previously validated Monte Carlo code was used to estimate intrinsic x‐ray absorption and optical properties, as well as the MTF and the Swank factor (I) of the Gd2O2S:Eu scintillators.
Results
Gd2O2S:Eu light intensity was found higher than that of single CsI:Tl crystal for tube voltages up to 100 kVp. The MTF and the DQE were found to be comparable with those of Gd2O2S:Tb and CsI:Tl screens. MTF estimated by the Monte Carlo code was found very close to the experimental MTF values. Gd2O2S:Eu showed peak emission in the wavelength range 620–630 nm. Its emission spectrum was excellently matched to various optical detectors (photodiodes, photocathodes, CCDs, and CMOS) employed in flat panel detectors.
Conclusions
Gd2O2S:Eu is an efficient phosphor potentially well suited to radiography and especially to some digital detectors sensitive to red light. |
| doi_str_mv | 10.1118/1.3451113 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_pubme</sourceid><recordid>TN_cdi_proquest_miscellaneous_754001772</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>754001772</sourcerecordid><originalsourceid>FETCH-LOGICAL-p1783-90fd7af11400ace81f9581624a840541bbbd1d18cf46de3bca516b1a7c72fd913</originalsourceid><addsrcrecordid>eNo9Uctu2zAQJIoUjevkkB8IeMtJLpekTCm3wEjdAg5SIO1ZoPhQGNikQkpwdcsn5BvzJaERt6dZ7A5md3YQugCyAIDqGywYL3PFPqEZ5YIVnJL6BM0IqXlBOSlP0deUngghS1aSL-iUkooBEWKG9hvXPQ7Y7FxKLnhsrHXKGa8mLL3Gbic75zvcm2hD3EmvDA4WrzW9pw_XtyPuw16biJNyfnDbrRxCxKM_tP6-vbxGOeEotQtdlP3jhFXw2g15TzpDn63cJnN-xDn68_329-pHsblf_1zdbIoeRMWKmlgtpAXghEhlKrB1WcGSclllWxzattWgoVKWL7VhrZIlLFuQQglqdQ1sjq4-dPsYnkeThiY7VSZf6k0YUyPKrAxC0My8PDLHdmd008dsPk7Nv19lQvFB2Lutmf7PgTSHEBpojiE0d78OwN4Bqb96FA</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>754001772</pqid></control><display><type>article</type><title>Light emission efficiency and imaging performance of Gd2O2S:Eu powder scintillator under x‐ray radiography conditions</title><source>MEDLINE</source><source>Wiley Journals</source><source>Alma/SFX Local Collection</source><creator>Michail, C. M. ; Fountos, G. P. ; Liaparinos, P. F. ; Kalyvas, N. E. ; Valais, I. ; Kandarakis, I. S. ; Panayiotakis, G. S.</creator><creatorcontrib>Michail, C. M. ; Fountos, G. P. ; Liaparinos, P. F. ; Kalyvas, N. E. ; Valais, I. ; Kandarakis, I. S. ; Panayiotakis, G. S.</creatorcontrib><description>Purpose
To evaluate Gd2O2S:Eu powder phosphor as a radiographic image receptor and to compare it to phosphors often used in radiography. Gd2O2S:Eu is nonhygroscopic, emitting red light with decay time close to that of Gd2O2S:Tb.
Methods
The light intensity emitted per unit of x‐ray exposure rate (absolute luminescence efficiency) was measured for laboratory prepared screens with coating thicknesses of 33.1, 46.4, 63.1, 78.3, and 139.8mg/cm2 and tube voltages ranging from 50 to 140 kVp. Parameters related to image quality such as the modulation transfer function (MTF) and the detective quantum efficiency (DQE) were also experimentally examined. In addition, a previously validated Monte Carlo code was used to estimate intrinsic x‐ray absorption and optical properties, as well as the MTF and the Swank factor (I) of the Gd2O2S:Eu scintillators.
Results
Gd2O2S:Eu light intensity was found higher than that of single CsI:Tl crystal for tube voltages up to 100 kVp. The MTF and the DQE were found to be comparable with those of Gd2O2S:Tb and CsI:Tl screens. MTF estimated by the Monte Carlo code was found very close to the experimental MTF values. Gd2O2S:Eu showed peak emission in the wavelength range 620–630 nm. Its emission spectrum was excellently matched to various optical detectors (photodiodes, photocathodes, CCDs, and CMOS) employed in flat panel detectors.
Conclusions
Gd2O2S:Eu is an efficient phosphor potentially well suited to radiography and especially to some digital detectors sensitive to red light.</description><identifier>ISSN: 0094-2405</identifier><identifier>EISSN: 2473-4209</identifier><identifier>DOI: 10.1118/1.3451113</identifier><identifier>PMID: 20831077</identifier><language>eng</language><publisher>United States: American Association of Physicists in Medicine</publisher><subject>Absorption ; Biomaterials ; biomedical materials ; diagnostic radiography ; Emission spectra ; Europium ; Gadolinium ; gadolinium compounds ; imaging performance ; Light ; light emission efficiency ; Modulation transfer functions ; Monte Carlo Method ; Monte Carlo methods ; Optical Phenomena ; Optical sensors ; oxygen compounds ; phosphor screens ; phosphors ; Photons ; Porous materials ; powders ; radiation detectors ; Radiography ; Scattering, Radiation ; Tomography, X-Ray Computed - instrumentation ; Tomography, X-Ray Computed - methods ; X‐ray detectors ; X‐ray optics ; x‐ray radiography ; X‐ray spectra</subject><ispartof>Medical physics (Lancaster), 2010-07, Vol.37 (7Part1), p.3694-3703</ispartof><rights>2010 American Association of Physicists in Medicine</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1118%2F1.3451113$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1118%2F1.3451113$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/20831077$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Michail, C. M.</creatorcontrib><creatorcontrib>Fountos, G. P.</creatorcontrib><creatorcontrib>Liaparinos, P. F.</creatorcontrib><creatorcontrib>Kalyvas, N. E.</creatorcontrib><creatorcontrib>Valais, I.</creatorcontrib><creatorcontrib>Kandarakis, I. S.</creatorcontrib><creatorcontrib>Panayiotakis, G. S.</creatorcontrib><title>Light emission efficiency and imaging performance of Gd2O2S:Eu powder scintillator under x‐ray radiography conditions</title><title>Medical physics (Lancaster)</title><addtitle>Med Phys</addtitle><description>Purpose
To evaluate Gd2O2S:Eu powder phosphor as a radiographic image receptor and to compare it to phosphors often used in radiography. Gd2O2S:Eu is nonhygroscopic, emitting red light with decay time close to that of Gd2O2S:Tb.
Methods
The light intensity emitted per unit of x‐ray exposure rate (absolute luminescence efficiency) was measured for laboratory prepared screens with coating thicknesses of 33.1, 46.4, 63.1, 78.3, and 139.8mg/cm2 and tube voltages ranging from 50 to 140 kVp. Parameters related to image quality such as the modulation transfer function (MTF) and the detective quantum efficiency (DQE) were also experimentally examined. In addition, a previously validated Monte Carlo code was used to estimate intrinsic x‐ray absorption and optical properties, as well as the MTF and the Swank factor (I) of the Gd2O2S:Eu scintillators.
Results
Gd2O2S:Eu light intensity was found higher than that of single CsI:Tl crystal for tube voltages up to 100 kVp. The MTF and the DQE were found to be comparable with those of Gd2O2S:Tb and CsI:Tl screens. MTF estimated by the Monte Carlo code was found very close to the experimental MTF values. Gd2O2S:Eu showed peak emission in the wavelength range 620–630 nm. Its emission spectrum was excellently matched to various optical detectors (photodiodes, photocathodes, CCDs, and CMOS) employed in flat panel detectors.
Conclusions
Gd2O2S:Eu is an efficient phosphor potentially well suited to radiography and especially to some digital detectors sensitive to red light.</description><subject>Absorption</subject><subject>Biomaterials</subject><subject>biomedical materials</subject><subject>diagnostic radiography</subject><subject>Emission spectra</subject><subject>Europium</subject><subject>Gadolinium</subject><subject>gadolinium compounds</subject><subject>imaging performance</subject><subject>Light</subject><subject>light emission efficiency</subject><subject>Modulation transfer functions</subject><subject>Monte Carlo Method</subject><subject>Monte Carlo methods</subject><subject>Optical Phenomena</subject><subject>Optical sensors</subject><subject>oxygen compounds</subject><subject>phosphor screens</subject><subject>phosphors</subject><subject>Photons</subject><subject>Porous materials</subject><subject>powders</subject><subject>radiation detectors</subject><subject>Radiography</subject><subject>Scattering, Radiation</subject><subject>Tomography, X-Ray Computed - instrumentation</subject><subject>Tomography, X-Ray Computed - methods</subject><subject>X‐ray detectors</subject><subject>X‐ray optics</subject><subject>x‐ray radiography</subject><subject>X‐ray spectra</subject><issn>0094-2405</issn><issn>2473-4209</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNo9Uctu2zAQJIoUjevkkB8IeMtJLpekTCm3wEjdAg5SIO1ZoPhQGNikQkpwdcsn5BvzJaERt6dZ7A5md3YQugCyAIDqGywYL3PFPqEZ5YIVnJL6BM0IqXlBOSlP0deUngghS1aSL-iUkooBEWKG9hvXPQ7Y7FxKLnhsrHXKGa8mLL3Gbic75zvcm2hD3EmvDA4WrzW9pw_XtyPuw16biJNyfnDbrRxCxKM_tP6-vbxGOeEotQtdlP3jhFXw2g15TzpDn63cJnN-xDn68_329-pHsblf_1zdbIoeRMWKmlgtpAXghEhlKrB1WcGSclllWxzattWgoVKWL7VhrZIlLFuQQglqdQ1sjq4-dPsYnkeThiY7VSZf6k0YUyPKrAxC0My8PDLHdmd008dsPk7Nv19lQvFB2Lutmf7PgTSHEBpojiE0d78OwN4Bqb96FA</recordid><startdate>201007</startdate><enddate>201007</enddate><creator>Michail, C. M.</creator><creator>Fountos, G. P.</creator><creator>Liaparinos, P. F.</creator><creator>Kalyvas, N. E.</creator><creator>Valais, I.</creator><creator>Kandarakis, I. S.</creator><creator>Panayiotakis, G. S.</creator><general>American Association of Physicists in Medicine</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>7X8</scope></search><sort><creationdate>201007</creationdate><title>Light emission efficiency and imaging performance of Gd2O2S:Eu powder scintillator under x‐ray radiography conditions</title><author>Michail, C. M. ; Fountos, G. P. ; Liaparinos, P. F. ; Kalyvas, N. E. ; Valais, I. ; Kandarakis, I. S. ; Panayiotakis, G. S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p1783-90fd7af11400ace81f9581624a840541bbbd1d18cf46de3bca516b1a7c72fd913</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Absorption</topic><topic>Biomaterials</topic><topic>biomedical materials</topic><topic>diagnostic radiography</topic><topic>Emission spectra</topic><topic>Europium</topic><topic>Gadolinium</topic><topic>gadolinium compounds</topic><topic>imaging performance</topic><topic>Light</topic><topic>light emission efficiency</topic><topic>Modulation transfer functions</topic><topic>Monte Carlo Method</topic><topic>Monte Carlo methods</topic><topic>Optical Phenomena</topic><topic>Optical sensors</topic><topic>oxygen compounds</topic><topic>phosphor screens</topic><topic>phosphors</topic><topic>Photons</topic><topic>Porous materials</topic><topic>powders</topic><topic>radiation detectors</topic><topic>Radiography</topic><topic>Scattering, Radiation</topic><topic>Tomography, X-Ray Computed - instrumentation</topic><topic>Tomography, X-Ray Computed - methods</topic><topic>X‐ray detectors</topic><topic>X‐ray optics</topic><topic>x‐ray radiography</topic><topic>X‐ray spectra</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Michail, C. M.</creatorcontrib><creatorcontrib>Fountos, G. P.</creatorcontrib><creatorcontrib>Liaparinos, P. F.</creatorcontrib><creatorcontrib>Kalyvas, N. E.</creatorcontrib><creatorcontrib>Valais, I.</creatorcontrib><creatorcontrib>Kandarakis, I. S.</creatorcontrib><creatorcontrib>Panayiotakis, G. S.</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>MEDLINE - Academic</collection><jtitle>Medical physics (Lancaster)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Michail, C. M.</au><au>Fountos, G. P.</au><au>Liaparinos, P. F.</au><au>Kalyvas, N. E.</au><au>Valais, I.</au><au>Kandarakis, I. S.</au><au>Panayiotakis, G. S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Light emission efficiency and imaging performance of Gd2O2S:Eu powder scintillator under x‐ray radiography conditions</atitle><jtitle>Medical physics (Lancaster)</jtitle><addtitle>Med Phys</addtitle><date>2010-07</date><risdate>2010</risdate><volume>37</volume><issue>7Part1</issue><spage>3694</spage><epage>3703</epage><pages>3694-3703</pages><issn>0094-2405</issn><eissn>2473-4209</eissn><abstract>Purpose
To evaluate Gd2O2S:Eu powder phosphor as a radiographic image receptor and to compare it to phosphors often used in radiography. Gd2O2S:Eu is nonhygroscopic, emitting red light with decay time close to that of Gd2O2S:Tb.
Methods
The light intensity emitted per unit of x‐ray exposure rate (absolute luminescence efficiency) was measured for laboratory prepared screens with coating thicknesses of 33.1, 46.4, 63.1, 78.3, and 139.8mg/cm2 and tube voltages ranging from 50 to 140 kVp. Parameters related to image quality such as the modulation transfer function (MTF) and the detective quantum efficiency (DQE) were also experimentally examined. In addition, a previously validated Monte Carlo code was used to estimate intrinsic x‐ray absorption and optical properties, as well as the MTF and the Swank factor (I) of the Gd2O2S:Eu scintillators.
Results
Gd2O2S:Eu light intensity was found higher than that of single CsI:Tl crystal for tube voltages up to 100 kVp. The MTF and the DQE were found to be comparable with those of Gd2O2S:Tb and CsI:Tl screens. MTF estimated by the Monte Carlo code was found very close to the experimental MTF values. Gd2O2S:Eu showed peak emission in the wavelength range 620–630 nm. Its emission spectrum was excellently matched to various optical detectors (photodiodes, photocathodes, CCDs, and CMOS) employed in flat panel detectors.
Conclusions
Gd2O2S:Eu is an efficient phosphor potentially well suited to radiography and especially to some digital detectors sensitive to red light.</abstract><cop>United States</cop><pub>American Association of Physicists in Medicine</pub><pmid>20831077</pmid><doi>10.1118/1.3451113</doi><tpages>10</tpages></addata></record> |
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| ispartof | Medical physics (Lancaster), 2010-07, Vol.37 (7Part1), p.3694-3703 |
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| subjects | Absorption Biomaterials biomedical materials diagnostic radiography Emission spectra Europium Gadolinium gadolinium compounds imaging performance Light light emission efficiency Modulation transfer functions Monte Carlo Method Monte Carlo methods Optical Phenomena Optical sensors oxygen compounds phosphor screens phosphors Photons Porous materials powders radiation detectors Radiography Scattering, Radiation Tomography, X-Ray Computed - instrumentation Tomography, X-Ray Computed - methods X‐ray detectors X‐ray optics x‐ray radiography X‐ray spectra |
| title | Light emission efficiency and imaging performance of Gd2O2S:Eu powder scintillator under x‐ray radiography conditions |
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