| Japanese |
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| Title | 201Tl心筋Emission CTの梗塞診断の有用性 : Frankベクトル心電図との対比検討 |
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| Subtitle | 《原著》 |
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| Authors | 山本秀平*, 松島英夫*, 外畑巌*, 河合直樹*, 岡田充弘*, 木田秀夫**, 笠原文雄** |
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| Organization | *名古屋大学医学部第一内科, **常滑市民病院放射線科 |
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| Journal | 核医学 |
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| Volume | 23 |
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| Number | 11 |
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| Page | 1565-1571 |
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| Year/Month | 1986/11 |
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| Article | 原著 |
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| Publisher | 日本核医学会 |
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| Abstract | 「要旨」: 陳旧心筋梗塞症患者64名, 標準12誘導心電図異常を有する非梗塞患者41名, 計105名を対象として201Tl心筋断層像 (ECT) , Frankベクトル心電図 (VCG) の梗塞診断能を対比検討した. 梗塞患者は梗塞部位数により単発梗塞群 (48例) , 多発梗塞群 (16例) に分類した. ECT, VCGともに単発梗塞の診断能は良好であった. 多発梗塞群では, ECTは左室各部とも診断能が良好であったが, VCGは前壁中隔, 前壁, 側壁に比し下壁, 後壁の感度が低かった. 非梗塞群では25例が梗塞診断基準を満足し (VCG偽陽性率61%) , 2例のみがECT梗塞診断基準を満足した (ECT偽陽性率5%) . 非梗塞群では高率に解剖学的心臓軸異常が診断された. 多発梗塞群でのVCG診断感度の低下は相反する複数個の梗塞ベクトルのcancellation効果に起因すると考えられ, 前壁梗塞に合併した後壁梗塞VCGの感度がとくに低かった. 非梗塞群におけるVCG偽陽性は心臓位置異常に起因する可能性が示唆された. |
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| Practice | 臨床医学：一般 |
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| Keywords | Myocardial infarction, Thallium-201, Myocardial emission computed tomography, Vectorcardiography. |
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| English |
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| Title | Diagnostic Reliability of 201Tl Myocardial Emission Computed Tomography and Frank Vectorcardiography for Evaluation of Myocardial infarct Sites |
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| Subtitle | Original Articles |
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| Authors | Shuhei YAMAMOTO*, Hideo MATSUSHITA*, Iwao SOTOBATA*, Naoki KAWAI*, Mitsuhiro OKADA*, Hideo KIDA**, Fumio KASAHARA** |
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| Authors(kana) | |
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| Organization | *First Department of Internal Medicine, Nagoya University School of Medicine, **Department of Radiology, Tokoname Municipal Hospital |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 23 |
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| Number | 11 |
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| Page | 1565-1571 |
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| Year/Month | 1986/11 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary] : Diagnostic reliability of 201Tl emission computed tomography (ECT) and vectorcardiography (VCG) for evaluation of myocardial infarction (MI) was studied comparatively in 64 patients with prior myocardial infarction (group I) and 41 non-infarction patients with electrocardiographic abnormalities simulating infarction (group II) . The left ventricular wall was divided into anterior, septal, lateral, inferior, and posterior segments in the left ventriculogram. Based on the number of its akinetic segments, group I was divided into two subgroups, solitary infarct group (1-a ; n=48) and multiple infarct group (I-b ; n=16) . In group I-a, both ECT and VCG showed a good diagnostic accuracy for every LV segment. In group I-b, ECT showed high sensitivity for all LV segments, whereas VCG showed lower one for the posterior and inferior than for the septal, anterior and lateral segments. In group II, 25 patients satisfied VCG criteria for myocardial infarctions, whereas only two met ECT criteria for myocardial infarction. The latter revealed malrotation of cardiac axis in 13 cases (32%) . Low sensitivity of VCG for multiple infarcts may be best explained by cancellation effects of multiple, reciprocal infarction vectors. Either cardiac malrotation and/or malposition may cause VCG findings simulating myocardial infarction. |
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| Practice | Clinical medicine |
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| Keywords | Myocardial infarction, Thallium201, Myocardial emission computed tomography, Vectorcardiography. |
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