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Prediction of Hemorrhagic Transformation in Acute Ischemic Stroke: Role of Diffusion-Weighted Imaging and Early Parenchymal Enhancement
DC Field | Value | Language |
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dc.contributor.author | 김응엽 | - |
dc.date.accessioned | 2017-05-04T07:25:41Z | - |
dc.date.available | 2017-05-04T07:25:41Z | - |
dc.date.issued | 2005 | - |
dc.identifier.issn | 0195-6108 | - |
dc.identifier.uri | https://ir.ymlib.yonsei.ac.kr/handle/22282913/147275 | - |
dc.description.abstract | BACKGROUND AND PURPOSE: MR imaging may help in predicting hemorrhagic transformation (HT) in acute ischemic stroke. Our purpose was to determine whether the lesion volumes on diffusion-weighted (DW) imaging, apparent diffusion coefficient (ADC) values, and early parenchymal enhancement are predictive of HT and to investigate the mechanism of the enhancement. METHODS: We retrospectively examined 55 patients with acute ischemic stroke who underwent gadolinium-enhanced MR imaging within 6 hours of symptom onset and follow-up CT or MR imaging within 72 hours. Intravenous thrombolysis was performed in 15 patients. DW imaging lesion volumes and ADC values were compared between patients with and those without HT. ADCs and perfusion parameters were compared between lesions with and those without parenchymal enhancement. RESULTS: Nineteen (34.5%) patients had HT (14 with hemorrhagic infarction, five with parenchymal hematoma). Patients with HT had decreased mean ADCs and large lesion volumes on DW imaging, but differences were not significant (P > .05). HT occurred in five patients (100%) with parenchymal enhancement, which corresponded to the site of HT. In enhancing lesions, the ADC ratio (0.76 +/- 0.06) was slightly higher and the delay in time to peak (0.10 +/- 2.79) was less than respective values in the rest of the ischemic lesion (0.66 +/- 0.06 and 8.79 +/- 4.86, respectively; P = .068). CONCLUSION: Early parenchymal enhancement is highly specific for HT and may be associated with early reperfusion and damage to the blood-brain barrier in ischemic tissue. DW imaging lesion volumes and ADC values had no strong relationship with HT. | - |
dc.description.statementOfResponsibility | open | - |
dc.format | application/pdf | - |
dc.language | English | - |
dc.publisher | American Society of Neuroradiology | - |
dc.relation.isPartOf | AMERICAN JOURNAL OF NEURORADIOLOGY | - |
dc.rights | CC BY-NC-ND 2.0 KR | - |
dc.rights | https://creativecommons.org/licenses/by-nc-nd/2.0/kr/ | - |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/2.0/kr/ | - |
dc.subject.MESH | Aged | - |
dc.subject.MESH | Aged, 80 and over | - |
dc.subject.MESH | Brain Ischemia/complications* | - |
dc.subject.MESH | Brain Ischemia/diagnosis* | - |
dc.subject.MESH | Cerebral Hemorrhage/etiology* | - |
dc.subject.MESH | Diffusion Magnetic Resonance Imaging* | - |
dc.subject.MESH | Female | - |
dc.subject.MESH | Humans | - |
dc.subject.MESH | Image Enhancement | - |
dc.subject.MESH | Male | - |
dc.subject.MESH | Middle Aged | - |
dc.subject.MESH | Predictive Value of Tests | - |
dc.subject.MESH | Retrospective Studies | - |
dc.subject.MESH | Stroke/complications* | - |
dc.subject.MESH | Stroke/diagnosis* | - |
dc.title | Prediction of Hemorrhagic Transformation in Acute Ischemic Stroke: Role of Diffusion-Weighted Imaging and Early Parenchymal Enhancement | - |
dc.type | Article | - |
dc.publisher.location | United States | - |
dc.contributor.college | College of Medicine (의과대학) | - |
dc.contributor.department | Dept. of Radiology (영상의학교실) | - |
dc.contributor.googleauthor | Eung Yeop Kim | - |
dc.contributor.googleauthor | Dong Gyu Na | - |
dc.contributor.googleauthor | Sam Soo Kim | - |
dc.contributor.googleauthor | Kwang Ho Lee | - |
dc.contributor.googleauthor | Jae Wook Ryoo | - |
dc.contributor.googleauthor | Ho Kyun Kim | - |
dc.identifier.doi | OAK-2005-02319 | - |
dc.contributor.localId | A00832 | - |
dc.relation.journalcode | J00095 | - |
dc.identifier.eissn | 1936-959X | - |
dc.identifier.pmid | 15891158 | - |
dc.subject.keyword | 15891158 | - |
dc.contributor.alternativeName | Kim, Eung Yeop | - |
dc.citation.volume | 26 | - |
dc.citation.number | 5 | - |
dc.citation.startPage | 1050 | - |
dc.citation.endPage | 1055 | - |
dc.identifier.bibliographicCitation | AMERICAN JOURNAL OF NEURORADIOLOGY, Vol.26(5) : 1050-1055, 2005 | - |
dc.date.modified | 2017-05-04 | - |
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