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タイトル: Comparison of regional myocardial Technetium-99m-MIBI uptake between ECG-gated and ungated SPECT imaging
著者: Onoguchi, Masahisa link image link image
Maruno, Hirotaka
Fujinaga, Tsuyoshi
Komiyama, Nobuyuki
Takayama, Teruhiko
Murata, Hajime
小野口, 昌久
髙山, 輝彦
発行日: 1997年 9月
出版社(者): Society of Nuclear Medicine
雑誌名: Journal of Nuclear Medicine Technology
ISSN: 0091-4916
巻: 25
号: 3
開始ページ: 181
終了ページ: 186
キーワード: Electrocardiogram-gated SPECT imaging
Regional myocardial uptake
抄録: Technetium-99m-MlBI uptake was compared between ECG-gated and ungated SPECT images in 10 normal subjects and 10 patients with coronary artery disease to investigate the effects of wall motion on regional myocardial uptake. Methods: Left ventricular ejection fraction (LVEF) and wall motion were evaluated using the first-pass data acquired immediately after injection of 1110 MBq 99mTc-MIBI. A transaxial ungated image was reconstructed with cumulative data during a cardiac cycle. For transaxial gated images, data during a cardiac cycle were divided into eight frames and the first seven frames were used. The lateral/septal ratios for ungated and gated images were obtained using the counts in the ROIs drawn in the lateral and the septal walls. Results: In 10 normal subjects, the lateral/septal ratio for gated increased during end-systole. The mean of the lateral/septal ratio was significantly lower for ungated than for gated (1.025 vs. 1.077, p < 0.05). In patients with septal wall asynergy and a normokinetic lateral wall, the mean of the lateral/septal ratios was significantly lower for ungated than for gated (1.267 vs. 1.325, p < 0.01). Conclusion: Ungated SPECT acquisition may underestimate regional myocardial uptake when myocardial wall motion is good, therefore, ECG-gated data should be acquired for accurate assessment of regional myocardial uptake of 99mTc-MIBI.
URI: http://hdl.handle.net/2297/7451
資料種別: Journal Article
版表示: publisher
出現コレクション:1. 査読済論文(医学・保健)

このアイテムを引用あるいはリンクする場合は次の識別子を使用してください。 http://hdl.handle.net/2297/7451



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