^<99m>Tc-MIBI と ^<201>TlCl の心筋灌流分布の比較

概要

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A newly-developed ^<99m>Tc-MIBI was studied regarding its detectability and assessment of myocardial blood flow maldistribution in comparison with ^<201>TlCl in 9 patients with an ischemic heart disease and one patient with III°AV block. Using the polar mapping display generated from the exercise or resting SPECT image data, visual estimation of traces distribution (normal (N), reduced-uptake (R) and defect (D)) were done segmentally. In 10 cases (120 segments), the coincidence of the estimation (N, R and D) between ^<99m>Tc-MIBI and ^<201>TlCl images was 92.5%. Moreover, mean and cumulative counts in ^<99m>Tc-MIBI images were highly comparable in each segment with those in ^<201>TlCl images, although 1 out of 10 cases showed significantly lower values of the segrental mean and cumulative counts in ^<99m>Tc-MIBI images than in the ^<201>TlCl images. In conclusion, ^<201>TlCl and ^<99m>Tc-MIBI yielded comparable data in both the visual and quantitative evaluation in 9 of the 10 cases, suggesting that ^<99m>Tc-MIBI allows to assess regional myocardial blood flow distribution almost equally to ^<201>TlCl.
社団法人日本放射線技術学会の論文
1992-11-01