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目的：探讨９９ｍＴｃ－甲氧基异丁基异腈（ＭＩＢＩ）肺阳性显像对肺癌诊断的临床价值。材料与方法：对２４例肺肿瘤患者（原发性肺癌 ２１例，肺良性病变 ３例）行９９ｍＴｃ－ ＭＩＢＩ肺阳性显像，以早期和城晚期病变处异常核素浓聚为阳性表现。结果：２１例原发性肺癌中１８例呈阳性改变，３例呈阴性改变；３例肺良性病变均呈阴性改变。９９ｍＴｃ－ＭＩＢＩ肺阳性显像对肺癌诊断的灵敏性为８５．７％（１８／２１），特异性为１００％（３／３）。结论：９９ｍＴｃ－ＭＩＢＩ肺阳性显像简便无创，对肺癌的诊断正确率较高，具有重要的临床意义。
Objective: To investigate the clinical value of 99mTc-methoxyisobutylisonitrile (MIBI) lung imaging in the diagnosis of lung cancer. Materials and Methods: Twenty-four patients with lung cancer (21 cases of primary lung cancer and 3 cases of benign lung disease) underwent lung imaging with 99mTc-MIBI. The positive findings of abnormal radionuclide accumulation were observed in early and late stages of the disease. Results: In 21 cases of primary lung cancer, 18 cases were positive, 3 cases were negative; 3 cases of benign lung disease were negative. The sensitivity of 99m Tc-MIBI lung imaging in diagnosing lung cancer was 85.7% (18/21) and 100% (3/3). Conclusion: 99mTc-MIBI lung imaging is simple and noninvasive, and has a high diagnostic accuracy for lung cancer. It has important clinical significance.