대한핵의학회지 (1967년~2009년)
대한핵의학회지 1993;27(2)210~8
원저 : 우측 관상동맥 폐쇄 환자에서 관상동맥내 Thallium - 201 주사를 이용한 측부 혈행의 의의 ( Functional Significance of Angiographic Collaterals in Patients with Totally Occluded Right Coronary Artery : Intracoronary Thallium - 201 Scintigraphy )
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Author 이도연(Do Yun Lee),이종두(Jong Doo Lee),조승연(Seung Yun Cho),심원흠(Won Heum Shim),하종원(Jong Won Ha),김한수(Han Soo Kim),권혁문(Hyuk Moon Kwon),장양수(Yang Soo Jang),정남식(Nam Sik Chung),김성순(Sung Soon Kim),박창윤(Chang Yun Park),김용수(Young Soo Kim),
Affiliation
Abstract

To compare the myocardial viability in patients suffering from total occlusion of the right coronary artery (RCA) with the angiographic collaterals, intracoronary injection of Thallium-201 (T1-201) was done to 14 coronary artery disease (CAD) patients (pts) with total occlusion of RCA and into four normal subjects for control. All 14 CAD pts had Grade 2 or 3 collateral circulations. There were 14 male and 4 females, and their ages ranged from 31 to 70 years. In nine pts, T1-201 was injected into left main coronary artery (LCA) (300∼350 μCi) to evaluate the myocardial viability of RCA territory through collateral circulations. The remaining five pts received T1-201 into RCA (200-250 μCi) because two had intraarterial bridging collaterals and three had previous successful PTCA. Planar & SPECT myocardial perfusion images were obtained 30 minutes, and four to five hours after T1- 201 reinjection. Intravenous T1-201 reinjection (six pts) or Tc-99m-MIBI (two pts) were also performed in eight CAD pts. Intracoronary myocardial perfusion images were compared with intravenous T1-201(IV T1-201) images, EGG, and ventriculography. Intracoronary TI-201 images proved to be superior to that of IV T1-201 due to better myocardial to background uptake ratio and more effective in the detection of viable tissue. We also found that perfusion defects were smaller on intracoronary T1-201 images than those on the IV T1- 201. All of the 14 CAD pts had either mostly viable myocardium (seven pts) or large area of T1-201 perfusion (seven pts) in RCA territory, however ventriculographic wall motion and ECG did not correlate well with intracoronary myocardial perfusion images. In conclusion, total RCA occlusion patients with well developed collateral circulation had large area of viable myocardial in the corresponding territory.

Keyword Myocardial viability, Intracoronary Tl-201 Scan, Collateral circuiation, Tl-201 Scintigraphy, Coronary arterial obstrctive disease
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