Comparison of the imaging performance of time-of-flight MRA and ultrashort echo time MRA in flow diverters: A phantom study
Flow diverters (FD) are innovative treatments for wide-neck intracranial aneurysms. After-treatment verification of embolization and parent vessel patency is crucial. While evaluation using time-of-flight magnetic resonance angiography (TOF-MRA) is useful, it suffers from signal loss within the FD d...
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| Veröffentlicht in: | Interventional neuroradiology 2024-09, p.15910199241285471 |
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| creator | Akatsu, Toshiya Wada, Akihiko Suzuki, Michimasa Fukuchi, Haruyuki Ikenouchi, Yutaka Takano, Nao Yagisawa, Fumihiro Teranishi, Kosuke Ishii, Akira Kondo, Akihide Aoki, Shigeki |
| description | Flow diverters (FD) are innovative treatments for wide-neck intracranial aneurysms. After-treatment verification of embolization and parent vessel patency is crucial. While evaluation using time-of-flight magnetic resonance angiography (TOF-MRA) is useful, it suffers from signal loss within the FD due to susceptibility effects. This study evaluates the usefulness of ultrashort echo time MRA (UTE-MRA) for after-FD assessment compared to TOF-MRA.
Vascular phantom experiments were conducted using FDs (FRED
, Pipeline
, Surpass Streamline
). TOF-MRA and UTE-MRA were performed under steady (10, 30, 50 cm/s) and pulsatile (17-61 cm/s, mean 34 cm/s) flow conditions using a 3 T MRI system. As evaluation metrics, relative in-FD signal (RIS) was calculated by comparing the signal intensity inside the FD to that without the FD to assess signal retention, and FD luminal to background signal ratio (FD-LBR) was calculated by comparing the signal intensity inside the FD to that of the surrounding background to evaluate vessel visibility.
UTE-MRA showed higher FD-LBR values than TOF-MRA for all FDs (
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| doi_str_mv | 10.1177/15910199241285471 |
| format | Article |
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Vascular phantom experiments were conducted using FDs (FRED
, Pipeline
, Surpass Streamline
). TOF-MRA and UTE-MRA were performed under steady (10, 30, 50 cm/s) and pulsatile (17-61 cm/s, mean 34 cm/s) flow conditions using a 3 T MRI system. As evaluation metrics, relative in-FD signal (RIS) was calculated by comparing the signal intensity inside the FD to that without the FD to assess signal retention, and FD luminal to background signal ratio (FD-LBR) was calculated by comparing the signal intensity inside the FD to that of the surrounding background to evaluate vessel visibility.
UTE-MRA showed higher FD-LBR values than TOF-MRA for all FDs (
< 0.01). For RIS, UTE-MRA was significantly higher for FRED
(
< 0.01), but different for other FDs except at 50 cm/s. FRED
exhibited the highest RIS and FD-LBR values under all conditions, followed by Pipeline
and Surpass Streamline
. Flow velocity changes resulted in minimal variations in RIS and FD-LBR values.
UTE-MRA provides superior image quality for after-FD assessment, particularly in terms of FD-LBR, compared to TOF-MRA. Differences in FD materials and structures affect image quality. These findings suggest UTE-MRA's clinical utility in follow-up after-FD assessment.</description><identifier>ISSN: 1591-0199</identifier><identifier>ISSN: 2385-2011</identifier><identifier>EISSN: 2385-2011</identifier><identifier>DOI: 10.1177/15910199241285471</identifier><identifier>PMID: 39311039</identifier><language>eng</language><publisher>United States: SAGE Publications</publisher><subject>Original</subject><ispartof>Interventional neuroradiology, 2024-09, p.15910199241285471</ispartof><rights>The Author(s) 2024 2024 SAGE Publications</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c239t-9256ea455e78cd4e29d7ede91c8d4fd1e599e531a7d8a840777e34048c9af3df3</cites><orcidid>0000-0001-7173-6443 ; 0000-0001-6442-7650</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,881,27901,27902</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/39311039$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Akatsu, Toshiya</creatorcontrib><creatorcontrib>Wada, Akihiko</creatorcontrib><creatorcontrib>Suzuki, Michimasa</creatorcontrib><creatorcontrib>Fukuchi, Haruyuki</creatorcontrib><creatorcontrib>Ikenouchi, Yutaka</creatorcontrib><creatorcontrib>Takano, Nao</creatorcontrib><creatorcontrib>Yagisawa, Fumihiro</creatorcontrib><creatorcontrib>Teranishi, Kosuke</creatorcontrib><creatorcontrib>Ishii, Akira</creatorcontrib><creatorcontrib>Kondo, Akihide</creatorcontrib><creatorcontrib>Aoki, Shigeki</creatorcontrib><title>Comparison of the imaging performance of time-of-flight MRA and ultrashort echo time MRA in flow diverters: A phantom study</title><title>Interventional neuroradiology</title><addtitle>Interv Neuroradiol</addtitle><description>Flow diverters (FD) are innovative treatments for wide-neck intracranial aneurysms. After-treatment verification of embolization and parent vessel patency is crucial. While evaluation using time-of-flight magnetic resonance angiography (TOF-MRA) is useful, it suffers from signal loss within the FD due to susceptibility effects. This study evaluates the usefulness of ultrashort echo time MRA (UTE-MRA) for after-FD assessment compared to TOF-MRA.
Vascular phantom experiments were conducted using FDs (FRED
, Pipeline
, Surpass Streamline
). TOF-MRA and UTE-MRA were performed under steady (10, 30, 50 cm/s) and pulsatile (17-61 cm/s, mean 34 cm/s) flow conditions using a 3 T MRI system. As evaluation metrics, relative in-FD signal (RIS) was calculated by comparing the signal intensity inside the FD to that without the FD to assess signal retention, and FD luminal to background signal ratio (FD-LBR) was calculated by comparing the signal intensity inside the FD to that of the surrounding background to evaluate vessel visibility.
UTE-MRA showed higher FD-LBR values than TOF-MRA for all FDs (
< 0.01). For RIS, UTE-MRA was significantly higher for FRED
(
< 0.01), but different for other FDs except at 50 cm/s. FRED
exhibited the highest RIS and FD-LBR values under all conditions, followed by Pipeline
and Surpass Streamline
. Flow velocity changes resulted in minimal variations in RIS and FD-LBR values.
UTE-MRA provides superior image quality for after-FD assessment, particularly in terms of FD-LBR, compared to TOF-MRA. Differences in FD materials and structures affect image quality. These findings suggest UTE-MRA's clinical utility in follow-up after-FD assessment.</description><subject>Original</subject><issn>1591-0199</issn><issn>2385-2011</issn><issn>2385-2011</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNplUU1v1DAQtRCIbgs_gAvykUuKJ47XNhe0WvElFSEhOFvGHm-MEjvYSVHFnye7LRWI0xzex7yZR8gzYJcAUr4EoYGB1m0HrRKdhAdk03IlmpYBPCSbI94cCWfkvNbvjG0F1_CYnHHNARjXG_Jrn8fJllhzojnQuUcaR3uI6UAnLCGX0SaHJyiO2OTQhCEe-pl-_LyjNnm6DHOxtc9lpuj6fKKdwJhoGPJP6uM1lhlLfUV3dOptmvNI67z4myfkUbBDxad384J8ffvmy_59c_Xp3Yf97qpxLddzo1uxRdsJgVI532GrvUSPGpzyXfCAQmsUHKz0yqqOSSmRd6xTTtvAfeAX5PWt77R8G9E7TGvkwUxlvbTcmGyj-RdJsTeHfG0AhNBKbleHF3cOJf9YsM5mjNXhMNiEeamGA1PrZ7XiKxVuqa7kWguG-z3AzLE1819rq-b53wHvFX9q4r8BWcSUOQ</recordid><startdate>20240923</startdate><enddate>20240923</enddate><creator>Akatsu, Toshiya</creator><creator>Wada, Akihiko</creator><creator>Suzuki, Michimasa</creator><creator>Fukuchi, Haruyuki</creator><creator>Ikenouchi, Yutaka</creator><creator>Takano, Nao</creator><creator>Yagisawa, Fumihiro</creator><creator>Teranishi, Kosuke</creator><creator>Ishii, Akira</creator><creator>Kondo, Akihide</creator><creator>Aoki, Shigeki</creator><general>SAGE Publications</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>5PM</scope><orcidid>https://orcid.org/0000-0001-7173-6443</orcidid><orcidid>https://orcid.org/0000-0001-6442-7650</orcidid></search><sort><creationdate>20240923</creationdate><title>Comparison of the imaging performance of time-of-flight MRA and ultrashort echo time MRA in flow diverters: A phantom study</title><author>Akatsu, Toshiya ; Wada, Akihiko ; Suzuki, Michimasa ; Fukuchi, Haruyuki ; Ikenouchi, Yutaka ; Takano, Nao ; Yagisawa, Fumihiro ; Teranishi, Kosuke ; Ishii, Akira ; Kondo, Akihide ; Aoki, Shigeki</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c239t-9256ea455e78cd4e29d7ede91c8d4fd1e599e531a7d8a840777e34048c9af3df3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Original</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Akatsu, Toshiya</creatorcontrib><creatorcontrib>Wada, Akihiko</creatorcontrib><creatorcontrib>Suzuki, Michimasa</creatorcontrib><creatorcontrib>Fukuchi, Haruyuki</creatorcontrib><creatorcontrib>Ikenouchi, Yutaka</creatorcontrib><creatorcontrib>Takano, Nao</creatorcontrib><creatorcontrib>Yagisawa, Fumihiro</creatorcontrib><creatorcontrib>Teranishi, Kosuke</creatorcontrib><creatorcontrib>Ishii, Akira</creatorcontrib><creatorcontrib>Kondo, Akihide</creatorcontrib><creatorcontrib>Aoki, Shigeki</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Interventional neuroradiology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Akatsu, Toshiya</au><au>Wada, Akihiko</au><au>Suzuki, Michimasa</au><au>Fukuchi, Haruyuki</au><au>Ikenouchi, Yutaka</au><au>Takano, Nao</au><au>Yagisawa, Fumihiro</au><au>Teranishi, Kosuke</au><au>Ishii, Akira</au><au>Kondo, Akihide</au><au>Aoki, Shigeki</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Comparison of the imaging performance of time-of-flight MRA and ultrashort echo time MRA in flow diverters: A phantom study</atitle><jtitle>Interventional neuroradiology</jtitle><addtitle>Interv Neuroradiol</addtitle><date>2024-09-23</date><risdate>2024</risdate><spage>15910199241285471</spage><pages>15910199241285471-</pages><issn>1591-0199</issn><issn>2385-2011</issn><eissn>2385-2011</eissn><abstract>Flow diverters (FD) are innovative treatments for wide-neck intracranial aneurysms. After-treatment verification of embolization and parent vessel patency is crucial. While evaluation using time-of-flight magnetic resonance angiography (TOF-MRA) is useful, it suffers from signal loss within the FD due to susceptibility effects. This study evaluates the usefulness of ultrashort echo time MRA (UTE-MRA) for after-FD assessment compared to TOF-MRA.
Vascular phantom experiments were conducted using FDs (FRED
, Pipeline
, Surpass Streamline
). TOF-MRA and UTE-MRA were performed under steady (10, 30, 50 cm/s) and pulsatile (17-61 cm/s, mean 34 cm/s) flow conditions using a 3 T MRI system. As evaluation metrics, relative in-FD signal (RIS) was calculated by comparing the signal intensity inside the FD to that without the FD to assess signal retention, and FD luminal to background signal ratio (FD-LBR) was calculated by comparing the signal intensity inside the FD to that of the surrounding background to evaluate vessel visibility.
UTE-MRA showed higher FD-LBR values than TOF-MRA for all FDs (
< 0.01). For RIS, UTE-MRA was significantly higher for FRED
(
< 0.01), but different for other FDs except at 50 cm/s. FRED
exhibited the highest RIS and FD-LBR values under all conditions, followed by Pipeline
and Surpass Streamline
. Flow velocity changes resulted in minimal variations in RIS and FD-LBR values.
UTE-MRA provides superior image quality for after-FD assessment, particularly in terms of FD-LBR, compared to TOF-MRA. Differences in FD materials and structures affect image quality. These findings suggest UTE-MRA's clinical utility in follow-up after-FD assessment.</abstract><cop>United States</cop><pub>SAGE Publications</pub><pmid>39311039</pmid><doi>10.1177/15910199241285471</doi><orcidid>https://orcid.org/0000-0001-7173-6443</orcidid><orcidid>https://orcid.org/0000-0001-6442-7650</orcidid></addata></record> |
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| source | SAGE Complete |
| subjects | Original |
| title | Comparison of the imaging performance of time-of-flight MRA and ultrashort echo time MRA in flow diverters: A phantom study |
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