Identification and further differentiation of subendocardial and transmural myocardial infarction by fast strain-encoded (SENC) magnetic resonance imaging at 3.0 Tesla
スポンサーリンク
概要
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Objectives: To investigate whether subendocardial and transmural myocardial infarction can be identified and differentiated using the peak circumferential and longitudinal strains measured by fast strain-encoded (SENC). Methods: Nineteen patients with ischemic heart diseases underwent imaging with fast SENC and late gadolinium enhancement (LGE) MRI at 3T. Fast SENC measurements were performed in three short-axis slices (basal, mid-ventricular and apical levels) and one long-axis view (four-chamber) to assess peak longitudinal and circumferential systolic strains. Results: All patients showed myocardial infarction with an average of 7 positive LGE segments. A total of 304 segments for longitudinal strains (LS) and 114 segments for circumferential strains (CS) could be analysed. Positive LGE segments showed lower peak CS and LS compared with the no-LGE segments (P < 0.0001 for both). Segments with subendocardial infarction showed reduced CS and LS compared with the no-LGE segments (P < 0.0001 for both). There was a significant difference in CS between subendocardial and transmural infarct segments (P = 0.03), but no significant difference in LS between them (P = 0.64). Conclusions: Fast SENC can identify old myocardial infarction and differentiate subendocardial from transmural infarction.
著者
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Hirano Satoshi
北海道大学 医学研究科腫瘍外科学分野
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Ooka Tomonori
Department Of Cardiovascular Surgery Hokkaido University Hospital
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Sugiura Hiroshi
Department Of Surgical Oncology Division Of Cancer Medicine Hokkaido University Graduate School Of M
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HIRANO SATOSHI
Department of Surgical Oncology, Hokkaido University Graduate School of Medicine
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Shirato Hiroki
Keiyukai Sapporo Hospital Sapporo Jpn
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OKUAKI Tomoyuki
Medical Satellite Yaesu Clinic
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Tha Khin
Department Of Radiobiology And Medical Engineering Hokkaido University Graduate School Of Medicine
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Oyama Noriko
Department Of Diagnostic And Interventional Radiology Hokkaido University Hospital
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Terae Satoshi
Department Of Diagnostic And Interventional Radiology Hokkaido University Hospital
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Haba Shin
Department Of Gastroenterology Hokkaido University Graduate School Of Medicine
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Hirano Satoshi
Surgical Oncology Hokkaido University Graduate School Of Medicine
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