Improvement of the Diagnostic Accuracy of MRA with Subtraction Technique in Cerebral Vasospasm
ABSTRACT PURPOSE Vasospasm has been considered the most severe acute complication after subarachnoid hemorrhage (SAH). MRA is not considered ideal for detecting cerebral vasospasm because of background including the hemorrhage. The aim of this study is to evaluate the efficacy of Subtraction MRA (SM...
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| Veröffentlicht in: | Journal of neuroimaging 2014-11, Vol.24 (6), p.548-553 |
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| creator | Hamaguchi, Akiyoshi Fujima, Noriyuki Yoshida, Daisuke Hamaguchi, Naoko Kodera, Shuichi |
| description | ABSTRACT
PURPOSE
Vasospasm has been considered the most severe acute complication after subarachnoid hemorrhage (SAH). MRA is not considered ideal for detecting cerebral vasospasm because of background including the hemorrhage. The aim of this study is to evaluate the efficacy of Subtraction MRA (SMRA) by comparing it to that of conventional MRA (CMRA) for diagnosis of cerebral vasospasm.
METHODS
Arteries were assigned to one of three categories based on the degree of MRA diagnostic quality of vasospasm (quality score): 0, bad … 2, good. Furthermore each artery was assigned to one of four categories based on the degree of vasospasm severity (SV score): 0, no vasospasm … 3, severe. The value of the difference between DSA‐SV score and MRA‐SV score was defined as the DIF score. CMRA and SMRA were compared for each arterial region with regard to quality score and DIF score.
RESULTS
The average CMRA and SMRA quality score were 1.46 and 1.79; the difference was statistically significant. The average CMRA and SMRA DIF score were 1.08 and .60; the difference was statistically significant.
CONCLUSIONS
Diagnosis of cerebral vasospasm is more accurate by SMRA than by CMRA. The advantages are its noninvasive nature and its ability to detect cerebral vasospasm. |
| doi_str_mv | 10.1111/jon.12147 |
| format | Article |
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PURPOSE
Vasospasm has been considered the most severe acute complication after subarachnoid hemorrhage (SAH). MRA is not considered ideal for detecting cerebral vasospasm because of background including the hemorrhage. The aim of this study is to evaluate the efficacy of Subtraction MRA (SMRA) by comparing it to that of conventional MRA (CMRA) for diagnosis of cerebral vasospasm.
METHODS
Arteries were assigned to one of three categories based on the degree of MRA diagnostic quality of vasospasm (quality score): 0, bad … 2, good. Furthermore each artery was assigned to one of four categories based on the degree of vasospasm severity (SV score): 0, no vasospasm … 3, severe. The value of the difference between DSA‐SV score and MRA‐SV score was defined as the DIF score. CMRA and SMRA were compared for each arterial region with regard to quality score and DIF score.
RESULTS
The average CMRA and SMRA quality score were 1.46 and 1.79; the difference was statistically significant. The average CMRA and SMRA DIF score were 1.08 and .60; the difference was statistically significant.
CONCLUSIONS
Diagnosis of cerebral vasospasm is more accurate by SMRA than by CMRA. The advantages are its noninvasive nature and its ability to detect cerebral vasospasm.</description><identifier>ISSN: 1051-2284</identifier><identifier>EISSN: 1552-6569</identifier><identifier>DOI: 10.1111/jon.12147</identifier><identifier>PMID: 25040831</identifier><language>eng</language><publisher>United States: Blackwell Publishing Ltd</publisher><subject>Accuracy ; Adult ; Aged ; Aged, 80 and over ; Algorithms ; Arteries ; Cerebral Arteries - pathology ; cerebral vasospasm ; Diagnosis ; Diagnostic systems ; Female ; Hemorrhage ; Humans ; Image Enhancement - methods ; Image Interpretation, Computer-Assisted - methods ; Imaging, Three-Dimensional - methods ; Magnetic Resonance Angiography - methods ; Male ; Middle Aged ; MRA ; Neuroimaging ; Observer Variation ; Reproducibility of Results ; Sensitivity and Specificity ; Statistical analysis ; Statistical significance ; Subarachnoid hemorrhage ; Subtraction ; Subtraction Technique ; Vasoconstriction ; Vasospasm, Intracranial - pathology</subject><ispartof>Journal of neuroimaging, 2014-11, Vol.24 (6), p.548-553</ispartof><rights>Copyright © 2014 by the American Society of Neuroimaging</rights><rights>Copyright © 2014 by the American Society of Neuroimaging.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4527-211737ad3aeaf52b54ccd950b1aee1c4eed98a342e41b521df5f0b5357d46cbd3</citedby><cites>FETCH-LOGICAL-c4527-211737ad3aeaf52b54ccd950b1aee1c4eed98a342e41b521df5f0b5357d46cbd3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1111%2Fjon.12147$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2Fjon.12147$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27903,27904,45553,45554</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/25040831$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Hamaguchi, Akiyoshi</creatorcontrib><creatorcontrib>Fujima, Noriyuki</creatorcontrib><creatorcontrib>Yoshida, Daisuke</creatorcontrib><creatorcontrib>Hamaguchi, Naoko</creatorcontrib><creatorcontrib>Kodera, Shuichi</creatorcontrib><title>Improvement of the Diagnostic Accuracy of MRA with Subtraction Technique in Cerebral Vasospasm</title><title>Journal of neuroimaging</title><addtitle>J Neuroimaging</addtitle><description>ABSTRACT
PURPOSE
Vasospasm has been considered the most severe acute complication after subarachnoid hemorrhage (SAH). MRA is not considered ideal for detecting cerebral vasospasm because of background including the hemorrhage. The aim of this study is to evaluate the efficacy of Subtraction MRA (SMRA) by comparing it to that of conventional MRA (CMRA) for diagnosis of cerebral vasospasm.
METHODS
Arteries were assigned to one of three categories based on the degree of MRA diagnostic quality of vasospasm (quality score): 0, bad … 2, good. Furthermore each artery was assigned to one of four categories based on the degree of vasospasm severity (SV score): 0, no vasospasm … 3, severe. The value of the difference between DSA‐SV score and MRA‐SV score was defined as the DIF score. CMRA and SMRA were compared for each arterial region with regard to quality score and DIF score.
RESULTS
The average CMRA and SMRA quality score were 1.46 and 1.79; the difference was statistically significant. The average CMRA and SMRA DIF score were 1.08 and .60; the difference was statistically significant.
CONCLUSIONS
Diagnosis of cerebral vasospasm is more accurate by SMRA than by CMRA. The advantages are its noninvasive nature and its ability to detect cerebral vasospasm.</description><subject>Accuracy</subject><subject>Adult</subject><subject>Aged</subject><subject>Aged, 80 and over</subject><subject>Algorithms</subject><subject>Arteries</subject><subject>Cerebral Arteries - pathology</subject><subject>cerebral vasospasm</subject><subject>Diagnosis</subject><subject>Diagnostic systems</subject><subject>Female</subject><subject>Hemorrhage</subject><subject>Humans</subject><subject>Image Enhancement - methods</subject><subject>Image Interpretation, Computer-Assisted - methods</subject><subject>Imaging, Three-Dimensional - methods</subject><subject>Magnetic Resonance Angiography - methods</subject><subject>Male</subject><subject>Middle Aged</subject><subject>MRA</subject><subject>Neuroimaging</subject><subject>Observer Variation</subject><subject>Reproducibility of Results</subject><subject>Sensitivity and Specificity</subject><subject>Statistical analysis</subject><subject>Statistical significance</subject><subject>Subarachnoid hemorrhage</subject><subject>Subtraction</subject><subject>Subtraction Technique</subject><subject>Vasoconstriction</subject><subject>Vasospasm, Intracranial - pathology</subject><issn>1051-2284</issn><issn>1552-6569</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkU9v1DAQxSMEoqVw4AsgS1zgkNbjf0mOywKldGmlUuCG5TgT1tskXuyEst8eL9v2gATCl7E8v_fkmZdlT4EeQjpHKz8cAgNR3Mv2QUqWK6mq--lOJeSMlWIvexTjitLEMP4w22OSClpy2M--nvTr4H9gj8NIfEvGJZLXznwbfBydJTNrp2DsZtv6cDEj125cko9TPabH0fmBXKJdDu77hMQNZI4B62A68tlEH9cm9o-zB63pIj65qQfZp7dvLufv8sX58cl8tsitkKzIGUDBC9Nwg6aVrJbC2qaStAaDCFYgNlVpuGAooJYMmla2tJZcFo1Qtm74QfZi55uGSZ-Jo-5dtNh1ZkA_RQ2KMZW2UcJ_oImSnBdb9Pkf6MpPYUiDaKhKqVgBFf0npUAJLlUpEvVyR9ngYwzY6nVwvQkbDVRvU0yqQf9OMbHPbhynusfmjryNLQFHO-Dadbj5u5N-f352a5nvFC6O-PNOYcKVVmn1Un85O9anvDx9BWyhL_gvZ4uzbA</recordid><startdate>201411</startdate><enddate>201411</enddate><creator>Hamaguchi, Akiyoshi</creator><creator>Fujima, Noriyuki</creator><creator>Yoshida, Daisuke</creator><creator>Hamaguchi, Naoko</creator><creator>Kodera, Shuichi</creator><general>Blackwell Publishing Ltd</general><general>Wiley Subscription Services, Inc</general><scope>BSCLL</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>7QO</scope><scope>7QP</scope><scope>7TK</scope><scope>8FD</scope><scope>FR3</scope><scope>K9.</scope><scope>P64</scope><scope>7X8</scope></search><sort><creationdate>201411</creationdate><title>Improvement of the Diagnostic Accuracy of MRA with Subtraction Technique in Cerebral Vasospasm</title><author>Hamaguchi, Akiyoshi ; Fujima, Noriyuki ; Yoshida, Daisuke ; Hamaguchi, Naoko ; Kodera, Shuichi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4527-211737ad3aeaf52b54ccd950b1aee1c4eed98a342e41b521df5f0b5357d46cbd3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Accuracy</topic><topic>Adult</topic><topic>Aged</topic><topic>Aged, 80 and over</topic><topic>Algorithms</topic><topic>Arteries</topic><topic>Cerebral Arteries - pathology</topic><topic>cerebral vasospasm</topic><topic>Diagnosis</topic><topic>Diagnostic systems</topic><topic>Female</topic><topic>Hemorrhage</topic><topic>Humans</topic><topic>Image Enhancement - methods</topic><topic>Image Interpretation, Computer-Assisted - methods</topic><topic>Imaging, Three-Dimensional - methods</topic><topic>Magnetic Resonance Angiography - methods</topic><topic>Male</topic><topic>Middle Aged</topic><topic>MRA</topic><topic>Neuroimaging</topic><topic>Observer Variation</topic><topic>Reproducibility of Results</topic><topic>Sensitivity and Specificity</topic><topic>Statistical analysis</topic><topic>Statistical significance</topic><topic>Subarachnoid hemorrhage</topic><topic>Subtraction</topic><topic>Subtraction Technique</topic><topic>Vasoconstriction</topic><topic>Vasospasm, Intracranial - pathology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hamaguchi, Akiyoshi</creatorcontrib><creatorcontrib>Fujima, Noriyuki</creatorcontrib><creatorcontrib>Yoshida, Daisuke</creatorcontrib><creatorcontrib>Hamaguchi, Naoko</creatorcontrib><creatorcontrib>Kodera, Shuichi</creatorcontrib><collection>Istex</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Calcium & Calcified Tissue Abstracts</collection><collection>Neurosciences Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of neuroimaging</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hamaguchi, Akiyoshi</au><au>Fujima, Noriyuki</au><au>Yoshida, Daisuke</au><au>Hamaguchi, Naoko</au><au>Kodera, Shuichi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Improvement of the Diagnostic Accuracy of MRA with Subtraction Technique in Cerebral Vasospasm</atitle><jtitle>Journal of neuroimaging</jtitle><addtitle>J Neuroimaging</addtitle><date>2014-11</date><risdate>2014</risdate><volume>24</volume><issue>6</issue><spage>548</spage><epage>553</epage><pages>548-553</pages><issn>1051-2284</issn><eissn>1552-6569</eissn><abstract>ABSTRACT
PURPOSE
Vasospasm has been considered the most severe acute complication after subarachnoid hemorrhage (SAH). MRA is not considered ideal for detecting cerebral vasospasm because of background including the hemorrhage. The aim of this study is to evaluate the efficacy of Subtraction MRA (SMRA) by comparing it to that of conventional MRA (CMRA) for diagnosis of cerebral vasospasm.
METHODS
Arteries were assigned to one of three categories based on the degree of MRA diagnostic quality of vasospasm (quality score): 0, bad … 2, good. Furthermore each artery was assigned to one of four categories based on the degree of vasospasm severity (SV score): 0, no vasospasm … 3, severe. The value of the difference between DSA‐SV score and MRA‐SV score was defined as the DIF score. CMRA and SMRA were compared for each arterial region with regard to quality score and DIF score.
RESULTS
The average CMRA and SMRA quality score were 1.46 and 1.79; the difference was statistically significant. The average CMRA and SMRA DIF score were 1.08 and .60; the difference was statistically significant.
CONCLUSIONS
Diagnosis of cerebral vasospasm is more accurate by SMRA than by CMRA. The advantages are its noninvasive nature and its ability to detect cerebral vasospasm.</abstract><cop>United States</cop><pub>Blackwell Publishing Ltd</pub><pmid>25040831</pmid><doi>10.1111/jon.12147</doi><tpages>6</tpages></addata></record> |
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| ispartof | Journal of neuroimaging, 2014-11, Vol.24 (6), p.548-553 |
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| source | Wiley Online Library - AutoHoldings Journals; MEDLINE |
| subjects | Accuracy Adult Aged Aged, 80 and over Algorithms Arteries Cerebral Arteries - pathology cerebral vasospasm Diagnosis Diagnostic systems Female Hemorrhage Humans Image Enhancement - methods Image Interpretation, Computer-Assisted - methods Imaging, Three-Dimensional - methods Magnetic Resonance Angiography - methods Male Middle Aged MRA Neuroimaging Observer Variation Reproducibility of Results Sensitivity and Specificity Statistical analysis Statistical significance Subarachnoid hemorrhage Subtraction Subtraction Technique Vasoconstriction Vasospasm, Intracranial - pathology |
| title | Improvement of the Diagnostic Accuracy of MRA with Subtraction Technique in Cerebral Vasospasm |
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