3T MR Imaging of Postoperative Recurrent Middle Ear Cholesteatomas: Value of Periodically Rotated Overlapping Parallel Lines with Enhanced Reconstruction Diffusion-Weighted MR Imaging

MR diagnostic of postoperative recurrent cholesteatomas is difficult. Our purpose was to compare multishot fast spin-echo periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) diffusion-weighted MR imaging (DWI) with array spatial sensitivity encoding technique (AS...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:American journal of neuroradiology : AJNR 2009-02, Vol.30 (2), p.423-427
Hauptverfasser: Lehmann, P, Saliou, G, Brochart, C, Page, C, Deschepper, B, Vallee, J.N, Deramond, H
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 427
container_issue 2
container_start_page 423
container_title American journal of neuroradiology : AJNR
container_volume 30
creator Lehmann, P
Saliou, G
Brochart, C
Page, C
Deschepper, B
Vallee, J.N
Deramond, H
description MR diagnostic of postoperative recurrent cholesteatomas is difficult. Our purpose was to compare multishot fast spin-echo periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) diffusion-weighted MR imaging (DWI) with array spatial sensitivity encoding technique (ASSET) single-shot echo-planar DWI and late postgadolinium T1-weighted MR imaging for the detection of postoperative recurrent middle ear cholesteatomas with a 3T imaging unit. Thirty-five patients with suggested postoperative recurrent middle ear cholesteatoma underwent 3T MR imaging with PROPELLER DWI, ASSET echo-planar DWI, and late postgadolinium T1-weighted MR imaging. Three radiologists (2 seniors, 1 fellow) analyzed unlabeled images for visualization of recurrence. Interobserver and intraobserver agreement was assessed by using the Cohen kappa statistic test. Sensitivity, specificity, and predictive value were assessed for the 3 observers. Nineteen recurrent cholesteatomas were diagnosed. PROPELLER interobserver agreement was very good (1, 0.89, 0.89) among the 3 observers. Intraobserver agreement between PROPELLER and T1-weighted imaging was very good to moderate (0.88, 0.57, 0.58). PROPELLER DWI provided less interobserver variability than other sequences, and the best sensitivity, specificity, and predictive value. On a 3T imaging unit, multishot fast spin-echo PROPELLER DWI allows an easier detection of postoperative recurrent middle ear cholesteatoma than T1-weighted imaging by reducing artifacts and by its better contrast. DWI with PROPELLER is diagnostically robust and accurate.
doi_str_mv 10.3174/ajnr.A1352
format Article
fullrecord <record><control><sourceid>proquest_pubme</sourceid><recordid>TN_cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_7051389</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>66914038</sourcerecordid><originalsourceid>FETCH-LOGICAL-c436t-74090c1bb803f09ed4b69f4d5225d165dd1a8be2c41fdda123c7a0af42041d683</originalsourceid><addsrcrecordid>eNpVkV9v0zAUxSMEYmXwwgdAfoEHpAw7tpOYB6SpFJjUaVM1_rxZrn3TeEriYDut9sn4erhbtcKTLd2fz7k-J8teE3xGScU-qNvBn50Tyosn2YwIWuaCi19PsxkmguclwfVJ9iKEW4wxF1XxPDshtWC8EnyW_aE36HKFLnq1scMGuQZduxDdCF5FuwW0Aj15D0NEl9aYDtBCeTRvXQchgoquV-Ej-qG6Ce7fgrfOWK267g6tXFQRDLragu_UOO71r5VPM-jQ0g4Q0M7GFi2GVg06gcnLDSH6SUfrBvTZNs0U0i3_CXbT7qWOm77MnjWqC_DqcJ5m378sbubf8uXV14v5-TLXjJYxrxgWWJP1usa0wQIMW5eiYYYXBTek5MYQVa-h0Iw0xihSUF0prBpWYEZMWdPT7NOD7jitezA6JZF-IEdve-XvpFNW_j8ZbCs3bisrzAmtRRJ4dxDw7veUUpO9DRq6Tg3gpiDLUhCG6d7p_QOovQvBQ_NoQrDc9yz3Pcv7nhP85t-1juih2AS8PQAqpDoanyK24ZErCGElF_TItSninfUgQ58aSrJE7nY7imUhWUHpX8Fewvk</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>66914038</pqid></control><display><type>article</type><title>3T MR Imaging of Postoperative Recurrent Middle Ear Cholesteatomas: Value of Periodically Rotated Overlapping Parallel Lines with Enhanced Reconstruction Diffusion-Weighted MR Imaging</title><source>MEDLINE</source><source>Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals</source><source>PubMed Central</source><creator>Lehmann, P ; Saliou, G ; Brochart, C ; Page, C ; Deschepper, B ; Vallee, J.N ; Deramond, H</creator><creatorcontrib>Lehmann, P ; Saliou, G ; Brochart, C ; Page, C ; Deschepper, B ; Vallee, J.N ; Deramond, H</creatorcontrib><description>MR diagnostic of postoperative recurrent cholesteatomas is difficult. Our purpose was to compare multishot fast spin-echo periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) diffusion-weighted MR imaging (DWI) with array spatial sensitivity encoding technique (ASSET) single-shot echo-planar DWI and late postgadolinium T1-weighted MR imaging for the detection of postoperative recurrent middle ear cholesteatomas with a 3T imaging unit. Thirty-five patients with suggested postoperative recurrent middle ear cholesteatoma underwent 3T MR imaging with PROPELLER DWI, ASSET echo-planar DWI, and late postgadolinium T1-weighted MR imaging. Three radiologists (2 seniors, 1 fellow) analyzed unlabeled images for visualization of recurrence. Interobserver and intraobserver agreement was assessed by using the Cohen kappa statistic test. Sensitivity, specificity, and predictive value were assessed for the 3 observers. Nineteen recurrent cholesteatomas were diagnosed. PROPELLER interobserver agreement was very good (1, 0.89, 0.89) among the 3 observers. Intraobserver agreement between PROPELLER and T1-weighted imaging was very good to moderate (0.88, 0.57, 0.58). PROPELLER DWI provided less interobserver variability than other sequences, and the best sensitivity, specificity, and predictive value. On a 3T imaging unit, multishot fast spin-echo PROPELLER DWI allows an easier detection of postoperative recurrent middle ear cholesteatoma than T1-weighted imaging by reducing artifacts and by its better contrast. DWI with PROPELLER is diagnostically robust and accurate.</description><identifier>ISSN: 0195-6108</identifier><identifier>EISSN: 1936-959X</identifier><identifier>DOI: 10.3174/ajnr.A1352</identifier><identifier>PMID: 18945795</identifier><identifier>CODEN: AAJNDL</identifier><language>eng</language><publisher>Oak Brook, IL: Am Soc Neuroradiology</publisher><subject>Adolescent ; Adult ; Aged ; Aged, 80 and over ; Biological and medical sciences ; Cerebrospinal fluid. Spinal cord. Spinal roots. Spinal nerves ; Child ; Cholesteatoma, Middle Ear - pathology ; Cholesteatoma, Middle Ear - surgery ; Diffusion Magnetic Resonance Imaging - methods ; Diffusion Magnetic Resonance Imaging - standards ; Diffusion Magnetic Resonance Imaging - statistics &amp; numerical data ; Female ; Head &amp; Neck ; Humans ; Investigative techniques, diagnostic techniques (general aspects) ; Magnetic Resonance Imaging ; Male ; Medical sciences ; Middle Aged ; Nervous system ; Neurosurgery ; Observer Variation ; Postoperative Complications - pathology ; Radiodiagnosis. Nmr imagery. Nmr spectrometry ; Recurrence ; Reproducibility of Results ; Sensitivity and Specificity ; Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases ; Young Adult</subject><ispartof>American journal of neuroradiology : AJNR, 2009-02, Vol.30 (2), p.423-427</ispartof><rights>2009 INIST-CNRS</rights><rights>Copyright © American Society of Neuroradiology 2009</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c436t-74090c1bb803f09ed4b69f4d5225d165dd1a8be2c41fdda123c7a0af42041d683</citedby><cites>FETCH-LOGICAL-c436t-74090c1bb803f09ed4b69f4d5225d165dd1a8be2c41fdda123c7a0af42041d683</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC7051389/pdf/$$EPDF$$P50$$Gpubmedcentral$$H</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC7051389/$$EHTML$$P50$$Gpubmedcentral$$H</linktohtml><link.rule.ids>230,314,723,776,780,881,27901,27902,53766,53768</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&amp;idt=21146593$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/18945795$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Lehmann, P</creatorcontrib><creatorcontrib>Saliou, G</creatorcontrib><creatorcontrib>Brochart, C</creatorcontrib><creatorcontrib>Page, C</creatorcontrib><creatorcontrib>Deschepper, B</creatorcontrib><creatorcontrib>Vallee, J.N</creatorcontrib><creatorcontrib>Deramond, H</creatorcontrib><title>3T MR Imaging of Postoperative Recurrent Middle Ear Cholesteatomas: Value of Periodically Rotated Overlapping Parallel Lines with Enhanced Reconstruction Diffusion-Weighted MR Imaging</title><title>American journal of neuroradiology : AJNR</title><addtitle>AJNR Am J Neuroradiol</addtitle><description>MR diagnostic of postoperative recurrent cholesteatomas is difficult. Our purpose was to compare multishot fast spin-echo periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) diffusion-weighted MR imaging (DWI) with array spatial sensitivity encoding technique (ASSET) single-shot echo-planar DWI and late postgadolinium T1-weighted MR imaging for the detection of postoperative recurrent middle ear cholesteatomas with a 3T imaging unit. Thirty-five patients with suggested postoperative recurrent middle ear cholesteatoma underwent 3T MR imaging with PROPELLER DWI, ASSET echo-planar DWI, and late postgadolinium T1-weighted MR imaging. Three radiologists (2 seniors, 1 fellow) analyzed unlabeled images for visualization of recurrence. Interobserver and intraobserver agreement was assessed by using the Cohen kappa statistic test. Sensitivity, specificity, and predictive value were assessed for the 3 observers. Nineteen recurrent cholesteatomas were diagnosed. PROPELLER interobserver agreement was very good (1, 0.89, 0.89) among the 3 observers. Intraobserver agreement between PROPELLER and T1-weighted imaging was very good to moderate (0.88, 0.57, 0.58). PROPELLER DWI provided less interobserver variability than other sequences, and the best sensitivity, specificity, and predictive value. On a 3T imaging unit, multishot fast spin-echo PROPELLER DWI allows an easier detection of postoperative recurrent middle ear cholesteatoma than T1-weighted imaging by reducing artifacts and by its better contrast. DWI with PROPELLER is diagnostically robust and accurate.</description><subject>Adolescent</subject><subject>Adult</subject><subject>Aged</subject><subject>Aged, 80 and over</subject><subject>Biological and medical sciences</subject><subject>Cerebrospinal fluid. Spinal cord. Spinal roots. Spinal nerves</subject><subject>Child</subject><subject>Cholesteatoma, Middle Ear - pathology</subject><subject>Cholesteatoma, Middle Ear - surgery</subject><subject>Diffusion Magnetic Resonance Imaging - methods</subject><subject>Diffusion Magnetic Resonance Imaging - standards</subject><subject>Diffusion Magnetic Resonance Imaging - statistics &amp; numerical data</subject><subject>Female</subject><subject>Head &amp; Neck</subject><subject>Humans</subject><subject>Investigative techniques, diagnostic techniques (general aspects)</subject><subject>Magnetic Resonance Imaging</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Middle Aged</subject><subject>Nervous system</subject><subject>Neurosurgery</subject><subject>Observer Variation</subject><subject>Postoperative Complications - pathology</subject><subject>Radiodiagnosis. Nmr imagery. Nmr spectrometry</subject><subject>Recurrence</subject><subject>Reproducibility of Results</subject><subject>Sensitivity and Specificity</subject><subject>Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases</subject><subject>Young Adult</subject><issn>0195-6108</issn><issn>1936-959X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpVkV9v0zAUxSMEYmXwwgdAfoEHpAw7tpOYB6SpFJjUaVM1_rxZrn3TeEriYDut9sn4erhbtcKTLd2fz7k-J8teE3xGScU-qNvBn50Tyosn2YwIWuaCi19PsxkmguclwfVJ9iKEW4wxF1XxPDshtWC8EnyW_aE36HKFLnq1scMGuQZduxDdCF5FuwW0Aj15D0NEl9aYDtBCeTRvXQchgoquV-Ej-qG6Ce7fgrfOWK267g6tXFQRDLragu_UOO71r5VPM-jQ0g4Q0M7GFi2GVg06gcnLDSH6SUfrBvTZNs0U0i3_CXbT7qWOm77MnjWqC_DqcJ5m378sbubf8uXV14v5-TLXjJYxrxgWWJP1usa0wQIMW5eiYYYXBTek5MYQVa-h0Iw0xihSUF0prBpWYEZMWdPT7NOD7jitezA6JZF-IEdve-XvpFNW_j8ZbCs3bisrzAmtRRJ4dxDw7veUUpO9DRq6Tg3gpiDLUhCG6d7p_QOovQvBQ_NoQrDc9yz3Pcv7nhP85t-1juih2AS8PQAqpDoanyK24ZErCGElF_TItSninfUgQ58aSrJE7nY7imUhWUHpX8Fewvk</recordid><startdate>20090201</startdate><enddate>20090201</enddate><creator>Lehmann, P</creator><creator>Saliou, G</creator><creator>Brochart, C</creator><creator>Page, C</creator><creator>Deschepper, B</creator><creator>Vallee, J.N</creator><creator>Deramond, H</creator><general>Am Soc Neuroradiology</general><general>American Society of Neuroradiology</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>5PM</scope></search><sort><creationdate>20090201</creationdate><title>3T MR Imaging of Postoperative Recurrent Middle Ear Cholesteatomas: Value of Periodically Rotated Overlapping Parallel Lines with Enhanced Reconstruction Diffusion-Weighted MR Imaging</title><author>Lehmann, P ; Saliou, G ; Brochart, C ; Page, C ; Deschepper, B ; Vallee, J.N ; Deramond, H</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c436t-74090c1bb803f09ed4b69f4d5225d165dd1a8be2c41fdda123c7a0af42041d683</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Adolescent</topic><topic>Adult</topic><topic>Aged</topic><topic>Aged, 80 and over</topic><topic>Biological and medical sciences</topic><topic>Cerebrospinal fluid. Spinal cord. Spinal roots. Spinal nerves</topic><topic>Child</topic><topic>Cholesteatoma, Middle Ear - pathology</topic><topic>Cholesteatoma, Middle Ear - surgery</topic><topic>Diffusion Magnetic Resonance Imaging - methods</topic><topic>Diffusion Magnetic Resonance Imaging - standards</topic><topic>Diffusion Magnetic Resonance Imaging - statistics &amp; numerical data</topic><topic>Female</topic><topic>Head &amp; Neck</topic><topic>Humans</topic><topic>Investigative techniques, diagnostic techniques (general aspects)</topic><topic>Magnetic Resonance Imaging</topic><topic>Male</topic><topic>Medical sciences</topic><topic>Middle Aged</topic><topic>Nervous system</topic><topic>Neurosurgery</topic><topic>Observer Variation</topic><topic>Postoperative Complications - pathology</topic><topic>Radiodiagnosis. Nmr imagery. Nmr spectrometry</topic><topic>Recurrence</topic><topic>Reproducibility of Results</topic><topic>Sensitivity and Specificity</topic><topic>Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases</topic><topic>Young Adult</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lehmann, P</creatorcontrib><creatorcontrib>Saliou, G</creatorcontrib><creatorcontrib>Brochart, C</creatorcontrib><creatorcontrib>Page, C</creatorcontrib><creatorcontrib>Deschepper, B</creatorcontrib><creatorcontrib>Vallee, J.N</creatorcontrib><creatorcontrib>Deramond, H</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>American journal of neuroradiology : AJNR</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lehmann, P</au><au>Saliou, G</au><au>Brochart, C</au><au>Page, C</au><au>Deschepper, B</au><au>Vallee, J.N</au><au>Deramond, H</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>3T MR Imaging of Postoperative Recurrent Middle Ear Cholesteatomas: Value of Periodically Rotated Overlapping Parallel Lines with Enhanced Reconstruction Diffusion-Weighted MR Imaging</atitle><jtitle>American journal of neuroradiology : AJNR</jtitle><addtitle>AJNR Am J Neuroradiol</addtitle><date>2009-02-01</date><risdate>2009</risdate><volume>30</volume><issue>2</issue><spage>423</spage><epage>427</epage><pages>423-427</pages><issn>0195-6108</issn><eissn>1936-959X</eissn><coden>AAJNDL</coden><abstract>MR diagnostic of postoperative recurrent cholesteatomas is difficult. Our purpose was to compare multishot fast spin-echo periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) diffusion-weighted MR imaging (DWI) with array spatial sensitivity encoding technique (ASSET) single-shot echo-planar DWI and late postgadolinium T1-weighted MR imaging for the detection of postoperative recurrent middle ear cholesteatomas with a 3T imaging unit. Thirty-five patients with suggested postoperative recurrent middle ear cholesteatoma underwent 3T MR imaging with PROPELLER DWI, ASSET echo-planar DWI, and late postgadolinium T1-weighted MR imaging. Three radiologists (2 seniors, 1 fellow) analyzed unlabeled images for visualization of recurrence. Interobserver and intraobserver agreement was assessed by using the Cohen kappa statistic test. Sensitivity, specificity, and predictive value were assessed for the 3 observers. Nineteen recurrent cholesteatomas were diagnosed. PROPELLER interobserver agreement was very good (1, 0.89, 0.89) among the 3 observers. Intraobserver agreement between PROPELLER and T1-weighted imaging was very good to moderate (0.88, 0.57, 0.58). PROPELLER DWI provided less interobserver variability than other sequences, and the best sensitivity, specificity, and predictive value. On a 3T imaging unit, multishot fast spin-echo PROPELLER DWI allows an easier detection of postoperative recurrent middle ear cholesteatoma than T1-weighted imaging by reducing artifacts and by its better contrast. DWI with PROPELLER is diagnostically robust and accurate.</abstract><cop>Oak Brook, IL</cop><pub>Am Soc Neuroradiology</pub><pmid>18945795</pmid><doi>10.3174/ajnr.A1352</doi><tpages>5</tpages><oa>free_for_read</oa></addata></record>
fulltext fulltext
identifier ISSN: 0195-6108
ispartof American journal of neuroradiology : AJNR, 2009-02, Vol.30 (2), p.423-427
issn 0195-6108
1936-959X
language eng
recordid cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_7051389
source MEDLINE; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; PubMed Central
subjects Adolescent
Adult
Aged
Aged, 80 and over
Biological and medical sciences
Cerebrospinal fluid. Spinal cord. Spinal roots. Spinal nerves
Child
Cholesteatoma, Middle Ear - pathology
Cholesteatoma, Middle Ear - surgery
Diffusion Magnetic Resonance Imaging - methods
Diffusion Magnetic Resonance Imaging - standards
Diffusion Magnetic Resonance Imaging - statistics & numerical data
Female
Head & Neck
Humans
Investigative techniques, diagnostic techniques (general aspects)
Magnetic Resonance Imaging
Male
Medical sciences
Middle Aged
Nervous system
Neurosurgery
Observer Variation
Postoperative Complications - pathology
Radiodiagnosis. Nmr imagery. Nmr spectrometry
Recurrence
Reproducibility of Results
Sensitivity and Specificity
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
Young Adult
title 3T MR Imaging of Postoperative Recurrent Middle Ear Cholesteatomas: Value of Periodically Rotated Overlapping Parallel Lines with Enhanced Reconstruction Diffusion-Weighted MR Imaging
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-09T02%3A58%3A01IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_pubme&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=3T%20MR%20Imaging%20of%20Postoperative%20Recurrent%20Middle%20Ear%20Cholesteatomas:%20Value%20of%20Periodically%20Rotated%20Overlapping%20Parallel%20Lines%20with%20Enhanced%20Reconstruction%20Diffusion-Weighted%20MR%20Imaging&rft.jtitle=American%20journal%20of%20neuroradiology%20:%20AJNR&rft.au=Lehmann,%20P&rft.date=2009-02-01&rft.volume=30&rft.issue=2&rft.spage=423&rft.epage=427&rft.pages=423-427&rft.issn=0195-6108&rft.eissn=1936-959X&rft.coden=AAJNDL&rft_id=info:doi/10.3174/ajnr.A1352&rft_dat=%3Cproquest_pubme%3E66914038%3C/proquest_pubme%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=66914038&rft_id=info:pmid/18945795&rfr_iscdi=true