Cited 97 times in
Nontumorous hepatic arterial-portal venous shunts: MR imaging findings
DC Field | Value | Language |
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dc.contributor.author | 유정식 | - |
dc.date.accessioned | 2019-11-11T05:24:16Z | - |
dc.date.available | 2019-11-11T05:24:16Z | - |
dc.date.issued | 2000 | - |
dc.identifier.issn | 0033-8419 | - |
dc.identifier.uri | https://ir.ymlib.yonsei.ac.kr/handle/22282913/171851 | - |
dc.description.abstract | To determine the magnetic resonance (MR) imaging findings of small nontumorous hepatic arterial-portal venous (arterioportal) shunts in the liver. MR images in 25 patients with 38 small nontumorous arterioportal shunts verified with surgery or follow-up imaging were included in this study. The causes of arterioportal shunts were iatrogenic causes in 11 patients and/or cirrhotic changes in the remaining patients. Nonenhanced T1- and T2-weighted images and multiphase contrast material-enhanced dynamic images were retrospectively reviewed and compared with conventional hepatic arteriograms to determine the MR characteristics related to the focal hemodynamic changes. On arterial-dominant-phase dynamic MR images, 29 (76%) of the 38 arteriographically suggested nontumorous arterioportal shunts displayed abnormal findings distinguished against the surrounding hepatic parenchyma, including wedge-shaped (n = 14), nodular (n = 9), or irregularly outlined (n = 6) areas of focal contrast enhancement. The signal intensity on nonenhanced T1- and T2-weighted images of the corresponding areas appeared unremarkable except for three wedge-shaped high-signal-intensity areas (three [8%] of 38) on T2-weighted images accompanied by prolonged contrast enhancement. Most (24 [83%] of 29) areas of abnormal signal intensity were located at the periphery of the liver parenchyma. A small nontumorous arterioportal shunt should be considered one of the causes of focal parenchymal hyperperfusion abnormalities on contrast-enhanced dynamic MR images of the liver in the absence of abnormal signal intensity on static MR images. MEDLINE PURPOSE: To determine the magnetic resonance (MR) imaging findings of small nontumorous hepatic arterial-portal venous (arterioportal) shunts in the liver. MATERIALS AND METHODS: MR images in 25 patients with 38 small nontumorous arterioportal shunts verified with surgery or follow-up imaging were included in this study. The causes of arterioportal shunts were iatrogenic causes in 11 patients and/or cirrhotic changes in the remaining patients. Nonenhanced T1- and T2-weighted images and multiphase contrast material-enhanced dynamic images were retrospectively reviewed and compared with conventional hepatic arteriograms to determine the MR characteristics related to the focal hemodynamic changes. RESULTS: On arterial-dominant-phase dynamic MR images, 29 (76%) of the 38 arteriographically suggested nontumorous arterioportal shunts displayed abnormal findings distinguished against the surrounding hepatic parenchyma, including wedge-shaped (n = 14), nodular (n = 9), or irregularly outlined (n = 6) areas of focal contrast enhancement. The signal intensity on nonenhanced T1- and T2-weighted images of the corresponding areas appeared unremarkable except for three wedge-shaped high-signal-intensity areas (three [8%] of 38) on T2-weighted images accompanied by prolonged contrast enhancement. Most (24 [83%] of 29) areas of abnormal signal intensity were located at the periphery of the liver parenchyma. CONCLUSION: A small nontumorous arterioportal shunt should be considered one of the causes of focal parenchymal hyperperfusion abnormalities on contrast-enhanced dynamic MR images of the liver in the absence of abnormal signal intensity on static MR images. | - |
dc.description.statementOfResponsibility | restriction | - |
dc.language | English | - |
dc.publisher | Radiological Society of North America | - |
dc.relation.isPartOf | Radiology | - |
dc.rights | CC BY-NC-ND 2.0 KR | - |
dc.subject.MESH | Adult | - |
dc.subject.MESH | Aged | - |
dc.subject.MESH | Aged, 80 and over | - |
dc.subject.MESH | Arteriovenous Malformations/diagnosis* | - |
dc.subject.MESH | Female | - |
dc.subject.MESH | Hepatic Artery/abnormalities* | - |
dc.subject.MESH | Humans | - |
dc.subject.MESH | Magnetic Resonance Angiography | - |
dc.subject.MESH | Magnetic Resonance Imaging/methods* | - |
dc.subject.MESH | Male | - |
dc.subject.MESH | Middle Aged | - |
dc.subject.MESH | Portal Vein/abnormalities* | - |
dc.subject.MESH | Retrospective Studies | - |
dc.title | Nontumorous hepatic arterial-portal venous shunts: MR imaging findings | - |
dc.type | Article | - |
dc.contributor.college | College of Medicine (의과대학) | - |
dc.contributor.department | Dept. of Radiology (영상의학교실) | - |
dc.contributor.googleauthor | Jeong-Sik Yu | - |
dc.contributor.googleauthor | Ki Whang Kim | - |
dc.contributor.googleauthor | Mi-Gyoung Jeong | - |
dc.contributor.googleauthor | Jong Tae Lee | - |
dc.contributor.googleauthor | Hyung Sik Yoo | - |
dc.identifier.doi | 10.1148/radiology.217.3.r00dc13750 | - |
dc.contributor.localId | A02500 | - |
dc.relation.journalcode | J02596 | - |
dc.identifier.eissn | 1527-1315 | - |
dc.identifier.pmid | 11110939 | - |
dc.identifier.url | https://pubs.rsna.org/doi/10.1148/radiology.217.3.r00dc13750 | - |
dc.contributor.alternativeName | Yu, Jeong Sik | - |
dc.contributor.affiliatedAuthor | 유정식 | - |
dc.citation.volume | 217 | - |
dc.citation.number | 3 | - |
dc.citation.startPage | 750 | - |
dc.citation.endPage | 756 | - |
dc.identifier.bibliographicCitation | Radiology, Vol.217(3) : 750-756, 2000 | - |
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