Bright and dark vessels on stroke imaging: different sides of the same coin?
Purpose: Prominent hypointense cerebral vessels on susceptibility-weighted imaging (SWI) and the hyperintense vessel sign (HVS) on fluid-attenuated inversion recovery (FLAIR) imaging are considered as markers of compromised tissue perfusion in cerebral ischemia. In this study, we aimed to identify t...
| Publicado en: | Diagnostic & Interventional Radiology Vol. 22; no. 3; pp. 284 - 291 |
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| Autores principales: | , , , , |
| Formato: | diagnostic images research tables/charts Journal Article |
| Publicado: |
Galenos Yayinevi Tic. LTD. STI
May/Jun2016
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=115157376&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 115157376 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 13053825 39NM jtl: Diagnostic & Interventional Radiology issn: 13053825 maglogo: N pubinfo: dt: May/Jun2016 vid: 22 iid: 3 pid: 28155 pub: Galenos Yayinevi Tic. LTD. STI artinfo: ui: 115157376 115157376 NLM27015319 115157376 10.5152/dir.2015.15271 NLM27015319 PMC4859747 115157376 ppf: 284 ppct: 7 formats: fmt: @attributes: type: P tig: atl: Bright and dark vessels on stroke imaging: different sides of the same coin? aug: au: Vural, Atay Gocmen, Rahsan Oguz, Kader Karli Topcuoglu, Mehmet Akif Arsava, Ethem Murat affil: Department of Neurology, Hacettepe University School of Medicine, Ankara, Turkey sug: subj: Cerebral Ischemia Stroke Infarction Retrospective Design Magnetic Resonance Imaging Methods Aged Aged, 80 and Over Male Infarction Pathology Middle Age Prognosis Female Human Aged: 65+ years Aged, 80 & over Middle Aged: 45-64 years Male Female ab: Purpose: Prominent hypointense cerebral vessels on susceptibility-weighted imaging (SWI) and the hyperintense vessel sign (HVS) on fluid-attenuated inversion recovery (FLAIR) imaging are considered as markers of compromised tissue perfusion in cerebral ischemia. In this study, we aimed to identify the correlation between HVS on FLAIR and hypointense vessels on SWI, and to determine whether these imaging features provide independent prognostic information in patients with ischemic stroke.Methods: We retrospectively analyzed consecutive ischemic stroke patients with proximal middle cerebral artery (MCA) occlusion who underwent SWI and FLAIR within 24 h of symptom onset. The presence of hypointense vessels on SWI and hyperintense vessels on FLAIR in >4 of 10 slices encompassing the MCA territory were considered to represent prominent hypoperfusion.Results: Among 50 patients, 62% had a prominent HVS on FLAIR and 68% had prominent hypointense vessels on SWI. There was a moderate but significant correlation between the number of slices with HVS on FLAIR and prominent hypointense vessels on SWI (r=0.425, P = 0.002). In multivariate analyses, the prominence of hypointense vessels on SWI, but not HVS on FLAIR, was significantly associated with a higher discharge NIHSS score (P = 0.027), mRS score (P = 0.021), and lesion growth (P = 0.050).Conclusion: The significant, albeit moderate, correlation between markers of compromised tissue perfusion on FLAIR and SWI suggests that these imaging features reflect different but interrelated aspects of cerebral hemodynamics during ischemic stroke. Our findings highlight that while HVS on FLAIR denotes the presence of leptomeningeal collaterals, hypointense vessels on SWI signify the sufficiency of cerebral blood flow at the tissue level and are therefore more critical in terms of prognosis. pubtype: Academic Journal doctype: diagnostic images research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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