In vivo hemodynamic analysis of intracranial aneurysms obtained by magnetic resonance fluid dynamics (MRFD) based on time-resolved three-dimensional phase-contrast MRI
Introduction Hemodynamics is thought to play a very important role in the initiation, growth, and rupture of intracranial aneurysms. The purpose of our study was to perform in vivo hemodynamic analysis of unruptured intracranial aneurysms of magnetic resonance fluid dynamics using time-resolved thre...
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| Veröffentlicht in: | Neuroradiology 2010-10, Vol.52 (10), p.921-928 |
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| creator | Isoda, Haruo Ohkura, Yasuhide Kosugi, Takashi Hirano, Masaya Takeda, Hiroyasu Hiramatsu, Hisaya Yamashita, Shuhei Takehara, Yasuo Alley, Marcus T. Bammer, Roland Pelc, Norbert J. Namba, Hiroki Sakahara, Harumi |
| description | Introduction
Hemodynamics is thought to play a very important role in the initiation, growth, and rupture of intracranial aneurysms. The purpose of our study was to perform in vivo hemodynamic analysis of unruptured intracranial aneurysms of magnetic resonance fluid dynamics using time-resolved three-dimensional phase-contrast MRI (4D-Flow) at 1.5 T and to analyze relationships between hemodynamics and wall shear stress (WSS) and oscillatory shear index (OSI).
Methods
This study included nine subjects with 14 unruptured aneurysms. 4D-Flow was performed by a 1.5-T magnetic resonance scanner with a head coil. We calculated in vivo streamlines, WSS, and OSI of intracranial aneurysms based on 4D-Flow with our software. We evaluated the number of spiral flows in the aneurysms and compared the differences in WSS or OSI between the vessel and aneurysm and between whole aneurysm and the apex of the spiral flow.
Results
3D streamlines, WSS, and OSI distribution maps in arbitrary direction during the cardiac phase were obtained for all intracranial aneurysms. Twelve aneurysms had one spiral flow each, and two aneurysms had two spiral flows each. The WSS was lower and the OSI was higher in the aneurysm compared to the vessel. The apex of the spiral flow had a lower WSS and higher OSI relative to the whole aneurysm.
Conclusion
Each intracranial aneurysm in this study had at least one spiral flow. The WSS was lower and OSI was higher at the apex of the spiral flow than the whole aneurysmal wall. |
| doi_str_mv | 10.1007/s00234-009-0635-3 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_954579290</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>755159272</sourcerecordid><originalsourceid>FETCH-LOGICAL-c498t-7709d2e754b8c9d8a6ccba5985ea714b47d5b897a9b288469c7aa4238de7fa9b3</originalsourceid><addsrcrecordid>eNqFkV-L1DAUxYso7rj6AXyRIIj6EL35N0keZXV1YBdh0eeSpulOljYdc9uBfiK_phlmdEEQnwL3_M65uZyqes7gHQPQ7xGAC0kBLIW1UFQ8qFZMCk6Z5fCwWhXZUGElnFVPEO8AQGihH1dnHIBxKdiq-rlJZB_3I9mGYWyX5IboiUuuXzAiGTsS05Sdzy5F1xchzHnBoSjN5GIKLWkWMrjbFKbiywHH5JIPpOvn2JJTHpI31zeXH9-SxmFxjIlMcQj0QPf7Mpi2OQTallnCWAJ6stsWkvrxsBsncn2zeVo96lyP4dnpPa--X376dvGFXn39vLn4cEW9tGaiWoNtedBKNsbb1ri1941T1qjgNJON1K1qjNXONtwYubZeOye5MG3QXRmK8-r1MXeXxx9zwKkeIvrQ9-X0ccbaKqm05Rb-S2qlmLJc80K-_Iu8G-dc7sTaMCWBaa0KxI6QzyNiDl29y3FweakZ1Ie262PbdWm7PrRdi-J5cQqemyG0fxy_6y3AqxPg0Lu-KzX6iPecEMBBHIL4kcMipduQ73_47-2_AIzdw-w</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>815401775</pqid></control><display><type>article</type><title>In vivo hemodynamic analysis of intracranial aneurysms obtained by magnetic resonance fluid dynamics (MRFD) based on time-resolved three-dimensional phase-contrast MRI</title><source>MEDLINE</source><source>SpringerLink</source><creator>Isoda, Haruo ; Ohkura, Yasuhide ; Kosugi, Takashi ; Hirano, Masaya ; Takeda, Hiroyasu ; Hiramatsu, Hisaya ; Yamashita, Shuhei ; Takehara, Yasuo ; Alley, Marcus T. ; Bammer, Roland ; Pelc, Norbert J. ; Namba, Hiroki ; Sakahara, Harumi</creator><creatorcontrib>Isoda, Haruo ; Ohkura, Yasuhide ; Kosugi, Takashi ; Hirano, Masaya ; Takeda, Hiroyasu ; Hiramatsu, Hisaya ; Yamashita, Shuhei ; Takehara, Yasuo ; Alley, Marcus T. ; Bammer, Roland ; Pelc, Norbert J. ; Namba, Hiroki ; Sakahara, Harumi</creatorcontrib><description>Introduction
Hemodynamics is thought to play a very important role in the initiation, growth, and rupture of intracranial aneurysms. The purpose of our study was to perform in vivo hemodynamic analysis of unruptured intracranial aneurysms of magnetic resonance fluid dynamics using time-resolved three-dimensional phase-contrast MRI (4D-Flow) at 1.5 T and to analyze relationships between hemodynamics and wall shear stress (WSS) and oscillatory shear index (OSI).
Methods
This study included nine subjects with 14 unruptured aneurysms. 4D-Flow was performed by a 1.5-T magnetic resonance scanner with a head coil. We calculated in vivo streamlines, WSS, and OSI of intracranial aneurysms based on 4D-Flow with our software. We evaluated the number of spiral flows in the aneurysms and compared the differences in WSS or OSI between the vessel and aneurysm and between whole aneurysm and the apex of the spiral flow.
Results
3D streamlines, WSS, and OSI distribution maps in arbitrary direction during the cardiac phase were obtained for all intracranial aneurysms. Twelve aneurysms had one spiral flow each, and two aneurysms had two spiral flows each. The WSS was lower and the OSI was higher in the aneurysm compared to the vessel. The apex of the spiral flow had a lower WSS and higher OSI relative to the whole aneurysm.
Conclusion
Each intracranial aneurysm in this study had at least one spiral flow. The WSS was lower and OSI was higher at the apex of the spiral flow than the whole aneurysmal wall.</description><identifier>ISSN: 0028-3940</identifier><identifier>EISSN: 1432-1920</identifier><identifier>DOI: 10.1007/s00234-009-0635-3</identifier><identifier>PMID: 20012431</identifier><identifier>CODEN: NRDYAB</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer-Verlag</publisher><subject>Aged ; Aneurysms ; Biological and medical sciences ; Blood Flow Velocity ; Cerebrovascular Circulation ; Computer Simulation ; Female ; Humans ; Image Interpretation, Computer-Assisted - methods ; Imaging ; Imaging, Three-Dimensional - methods ; Interventional Neuroradiology ; Intracranial Aneurysm - diagnosis ; Intracranial Aneurysm - physiopathology ; Investigative techniques, diagnostic techniques (general aspects) ; Magnetic Resonance Angiography - methods ; Magnetic Resonance Imaging, Cine - methods ; Male ; Medical sciences ; Medicine ; Medicine & Public Health ; Middle Aged ; Models, Cardiovascular ; Nervous system ; Nervous system involvement in other diseases. Miscellaneous ; Neurology ; Neuroradiology ; Neurosciences ; Neurosurgery ; NMR ; Nuclear magnetic resonance ; Radiodiagnosis. Nmr imagery. Nmr spectrometry ; Radiology ; Reproducibility of Results ; Sensitivity and Specificity</subject><ispartof>Neuroradiology, 2010-10, Vol.52 (10), p.921-928</ispartof><rights>Springer-Verlag 2009</rights><rights>2015 INIST-CNRS</rights><rights>Springer-Verlag 2010</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c498t-7709d2e754b8c9d8a6ccba5985ea714b47d5b897a9b288469c7aa4238de7fa9b3</citedby><cites>FETCH-LOGICAL-c498t-7709d2e754b8c9d8a6ccba5985ea714b47d5b897a9b288469c7aa4238de7fa9b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00234-009-0635-3$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00234-009-0635-3$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=23302033$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/20012431$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Isoda, Haruo</creatorcontrib><creatorcontrib>Ohkura, Yasuhide</creatorcontrib><creatorcontrib>Kosugi, Takashi</creatorcontrib><creatorcontrib>Hirano, Masaya</creatorcontrib><creatorcontrib>Takeda, Hiroyasu</creatorcontrib><creatorcontrib>Hiramatsu, Hisaya</creatorcontrib><creatorcontrib>Yamashita, Shuhei</creatorcontrib><creatorcontrib>Takehara, Yasuo</creatorcontrib><creatorcontrib>Alley, Marcus T.</creatorcontrib><creatorcontrib>Bammer, Roland</creatorcontrib><creatorcontrib>Pelc, Norbert J.</creatorcontrib><creatorcontrib>Namba, Hiroki</creatorcontrib><creatorcontrib>Sakahara, Harumi</creatorcontrib><title>In vivo hemodynamic analysis of intracranial aneurysms obtained by magnetic resonance fluid dynamics (MRFD) based on time-resolved three-dimensional phase-contrast MRI</title><title>Neuroradiology</title><addtitle>Neuroradiology</addtitle><addtitle>Neuroradiology</addtitle><description>Introduction
Hemodynamics is thought to play a very important role in the initiation, growth, and rupture of intracranial aneurysms. The purpose of our study was to perform in vivo hemodynamic analysis of unruptured intracranial aneurysms of magnetic resonance fluid dynamics using time-resolved three-dimensional phase-contrast MRI (4D-Flow) at 1.5 T and to analyze relationships between hemodynamics and wall shear stress (WSS) and oscillatory shear index (OSI).
Methods
This study included nine subjects with 14 unruptured aneurysms. 4D-Flow was performed by a 1.5-T magnetic resonance scanner with a head coil. We calculated in vivo streamlines, WSS, and OSI of intracranial aneurysms based on 4D-Flow with our software. We evaluated the number of spiral flows in the aneurysms and compared the differences in WSS or OSI between the vessel and aneurysm and between whole aneurysm and the apex of the spiral flow.
Results
3D streamlines, WSS, and OSI distribution maps in arbitrary direction during the cardiac phase were obtained for all intracranial aneurysms. Twelve aneurysms had one spiral flow each, and two aneurysms had two spiral flows each. The WSS was lower and the OSI was higher in the aneurysm compared to the vessel. The apex of the spiral flow had a lower WSS and higher OSI relative to the whole aneurysm.
Conclusion
Each intracranial aneurysm in this study had at least one spiral flow. The WSS was lower and OSI was higher at the apex of the spiral flow than the whole aneurysmal wall.</description><subject>Aged</subject><subject>Aneurysms</subject><subject>Biological and medical sciences</subject><subject>Blood Flow Velocity</subject><subject>Cerebrovascular Circulation</subject><subject>Computer Simulation</subject><subject>Female</subject><subject>Humans</subject><subject>Image Interpretation, Computer-Assisted - methods</subject><subject>Imaging</subject><subject>Imaging, Three-Dimensional - methods</subject><subject>Interventional Neuroradiology</subject><subject>Intracranial Aneurysm - diagnosis</subject><subject>Intracranial Aneurysm - physiopathology</subject><subject>Investigative techniques, diagnostic techniques (general aspects)</subject><subject>Magnetic Resonance Angiography - methods</subject><subject>Magnetic Resonance Imaging, Cine - methods</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Medicine</subject><subject>Medicine & Public Health</subject><subject>Middle Aged</subject><subject>Models, Cardiovascular</subject><subject>Nervous system</subject><subject>Nervous system involvement in other diseases. Miscellaneous</subject><subject>Neurology</subject><subject>Neuroradiology</subject><subject>Neurosciences</subject><subject>Neurosurgery</subject><subject>NMR</subject><subject>Nuclear magnetic resonance</subject><subject>Radiodiagnosis. Nmr imagery. Nmr spectrometry</subject><subject>Radiology</subject><subject>Reproducibility of Results</subject><subject>Sensitivity and Specificity</subject><issn>0028-3940</issn><issn>1432-1920</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>8G5</sourceid><sourceid>BENPR</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNqFkV-L1DAUxYso7rj6AXyRIIj6EL35N0keZXV1YBdh0eeSpulOljYdc9uBfiK_phlmdEEQnwL3_M65uZyqes7gHQPQ7xGAC0kBLIW1UFQ8qFZMCk6Z5fCwWhXZUGElnFVPEO8AQGihH1dnHIBxKdiq-rlJZB_3I9mGYWyX5IboiUuuXzAiGTsS05Sdzy5F1xchzHnBoSjN5GIKLWkWMrjbFKbiywHH5JIPpOvn2JJTHpI31zeXH9-SxmFxjIlMcQj0QPf7Mpi2OQTallnCWAJ6stsWkvrxsBsncn2zeVo96lyP4dnpPa--X376dvGFXn39vLn4cEW9tGaiWoNtedBKNsbb1ri1941T1qjgNJON1K1qjNXONtwYubZeOye5MG3QXRmK8-r1MXeXxx9zwKkeIvrQ9-X0ccbaKqm05Rb-S2qlmLJc80K-_Iu8G-dc7sTaMCWBaa0KxI6QzyNiDl29y3FweakZ1Ie262PbdWm7PrRdi-J5cQqemyG0fxy_6y3AqxPg0Lu-KzX6iPecEMBBHIL4kcMipduQ73_47-2_AIzdw-w</recordid><startdate>20101001</startdate><enddate>20101001</enddate><creator>Isoda, Haruo</creator><creator>Ohkura, Yasuhide</creator><creator>Kosugi, Takashi</creator><creator>Hirano, Masaya</creator><creator>Takeda, Hiroyasu</creator><creator>Hiramatsu, Hisaya</creator><creator>Yamashita, Shuhei</creator><creator>Takehara, Yasuo</creator><creator>Alley, Marcus T.</creator><creator>Bammer, Roland</creator><creator>Pelc, Norbert J.</creator><creator>Namba, Hiroki</creator><creator>Sakahara, Harumi</creator><general>Springer-Verlag</general><general>Springer</general><general>Springer Nature B.V</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>3V.</scope><scope>7QO</scope><scope>7RV</scope><scope>7TK</scope><scope>7U7</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8AO</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>8G5</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>KB0</scope><scope>LK8</scope><scope>M0S</scope><scope>M1P</scope><scope>M2O</scope><scope>M7P</scope><scope>MBDVC</scope><scope>NAPCQ</scope><scope>P5Z</scope><scope>P62</scope><scope>P64</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>Q9U</scope><scope>7X8</scope></search><sort><creationdate>20101001</creationdate><title>In vivo hemodynamic analysis of intracranial aneurysms obtained by magnetic resonance fluid dynamics (MRFD) based on time-resolved three-dimensional phase-contrast MRI</title><author>Isoda, Haruo ; Ohkura, Yasuhide ; Kosugi, Takashi ; Hirano, Masaya ; Takeda, Hiroyasu ; Hiramatsu, Hisaya ; Yamashita, Shuhei ; Takehara, Yasuo ; Alley, Marcus T. ; Bammer, Roland ; Pelc, Norbert J. ; Namba, Hiroki ; Sakahara, Harumi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c498t-7709d2e754b8c9d8a6ccba5985ea714b47d5b897a9b288469c7aa4238de7fa9b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Aged</topic><topic>Aneurysms</topic><topic>Biological and medical sciences</topic><topic>Blood Flow Velocity</topic><topic>Cerebrovascular Circulation</topic><topic>Computer Simulation</topic><topic>Female</topic><topic>Humans</topic><topic>Image Interpretation, Computer-Assisted - methods</topic><topic>Imaging</topic><topic>Imaging, Three-Dimensional - methods</topic><topic>Interventional Neuroradiology</topic><topic>Intracranial Aneurysm - diagnosis</topic><topic>Intracranial Aneurysm - physiopathology</topic><topic>Investigative techniques, diagnostic techniques (general aspects)</topic><topic>Magnetic Resonance Angiography - methods</topic><topic>Magnetic Resonance Imaging, Cine - methods</topic><topic>Male</topic><topic>Medical sciences</topic><topic>Medicine</topic><topic>Medicine & Public Health</topic><topic>Middle Aged</topic><topic>Models, Cardiovascular</topic><topic>Nervous system</topic><topic>Nervous system involvement in other diseases. Miscellaneous</topic><topic>Neurology</topic><topic>Neuroradiology</topic><topic>Neurosciences</topic><topic>Neurosurgery</topic><topic>NMR</topic><topic>Nuclear magnetic resonance</topic><topic>Radiodiagnosis. Nmr imagery. Nmr spectrometry</topic><topic>Radiology</topic><topic>Reproducibility of Results</topic><topic>Sensitivity and Specificity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Isoda, Haruo</creatorcontrib><creatorcontrib>Ohkura, Yasuhide</creatorcontrib><creatorcontrib>Kosugi, Takashi</creatorcontrib><creatorcontrib>Hirano, Masaya</creatorcontrib><creatorcontrib>Takeda, Hiroyasu</creatorcontrib><creatorcontrib>Hiramatsu, Hisaya</creatorcontrib><creatorcontrib>Yamashita, Shuhei</creatorcontrib><creatorcontrib>Takehara, Yasuo</creatorcontrib><creatorcontrib>Alley, Marcus T.</creatorcontrib><creatorcontrib>Bammer, Roland</creatorcontrib><creatorcontrib>Pelc, Norbert J.</creatorcontrib><creatorcontrib>Namba, Hiroki</creatorcontrib><creatorcontrib>Sakahara, Harumi</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>ProQuest Central (Corporate)</collection><collection>Biotechnology Research Abstracts</collection><collection>ProQuest Nursing and Allied Health Journals</collection><collection>Neurosciences Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Medical Database (Alumni Edition)</collection><collection>ProQuest Pharma Collection</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Research Library (Alumni Edition)</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest Central</collection><collection>Advanced Technologies & Aerospace Database (1962 - 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Academic</collection><jtitle>Neuroradiology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Isoda, Haruo</au><au>Ohkura, Yasuhide</au><au>Kosugi, Takashi</au><au>Hirano, Masaya</au><au>Takeda, Hiroyasu</au><au>Hiramatsu, Hisaya</au><au>Yamashita, Shuhei</au><au>Takehara, Yasuo</au><au>Alley, Marcus T.</au><au>Bammer, Roland</au><au>Pelc, Norbert J.</au><au>Namba, Hiroki</au><au>Sakahara, Harumi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>In vivo hemodynamic analysis of intracranial aneurysms obtained by magnetic resonance fluid dynamics (MRFD) based on time-resolved three-dimensional phase-contrast MRI</atitle><jtitle>Neuroradiology</jtitle><stitle>Neuroradiology</stitle><addtitle>Neuroradiology</addtitle><date>2010-10-01</date><risdate>2010</risdate><volume>52</volume><issue>10</issue><spage>921</spage><epage>928</epage><pages>921-928</pages><issn>0028-3940</issn><eissn>1432-1920</eissn><coden>NRDYAB</coden><abstract>Introduction
Hemodynamics is thought to play a very important role in the initiation, growth, and rupture of intracranial aneurysms. The purpose of our study was to perform in vivo hemodynamic analysis of unruptured intracranial aneurysms of magnetic resonance fluid dynamics using time-resolved three-dimensional phase-contrast MRI (4D-Flow) at 1.5 T and to analyze relationships between hemodynamics and wall shear stress (WSS) and oscillatory shear index (OSI).
Methods
This study included nine subjects with 14 unruptured aneurysms. 4D-Flow was performed by a 1.5-T magnetic resonance scanner with a head coil. We calculated in vivo streamlines, WSS, and OSI of intracranial aneurysms based on 4D-Flow with our software. We evaluated the number of spiral flows in the aneurysms and compared the differences in WSS or OSI between the vessel and aneurysm and between whole aneurysm and the apex of the spiral flow.
Results
3D streamlines, WSS, and OSI distribution maps in arbitrary direction during the cardiac phase were obtained for all intracranial aneurysms. Twelve aneurysms had one spiral flow each, and two aneurysms had two spiral flows each. The WSS was lower and the OSI was higher in the aneurysm compared to the vessel. The apex of the spiral flow had a lower WSS and higher OSI relative to the whole aneurysm.
Conclusion
Each intracranial aneurysm in this study had at least one spiral flow. The WSS was lower and OSI was higher at the apex of the spiral flow than the whole aneurysmal wall.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer-Verlag</pub><pmid>20012431</pmid><doi>10.1007/s00234-009-0635-3</doi><tpages>8</tpages></addata></record> |
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| subjects | Aged Aneurysms Biological and medical sciences Blood Flow Velocity Cerebrovascular Circulation Computer Simulation Female Humans Image Interpretation, Computer-Assisted - methods Imaging Imaging, Three-Dimensional - methods Interventional Neuroradiology Intracranial Aneurysm - diagnosis Intracranial Aneurysm - physiopathology Investigative techniques, diagnostic techniques (general aspects) Magnetic Resonance Angiography - methods Magnetic Resonance Imaging, Cine - methods Male Medical sciences Medicine Medicine & Public Health Middle Aged Models, Cardiovascular Nervous system Nervous system involvement in other diseases. Miscellaneous Neurology Neuroradiology Neurosciences Neurosurgery NMR Nuclear magnetic resonance Radiodiagnosis. Nmr imagery. Nmr spectrometry Radiology Reproducibility of Results Sensitivity and Specificity |
| title | In vivo hemodynamic analysis of intracranial aneurysms obtained by magnetic resonance fluid dynamics (MRFD) based on time-resolved three-dimensional phase-contrast MRI |
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