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目的:研究18F-FDG显像在结直肠癌术后不同部位转移复发中的诊断价值。方法:采用18F-FDG双探头符合线路显像,同机图像融合。结果:18F-PET/CT诊断结直肠癌术后吻合口复发的敏感度为100%,阴性预测值为100%,明显高于CT的61.5%和84.1%,18F-FDG PET/CT诊断结直肠癌术后周围淋巴结及远处转移的敏感度为97.9%,特异性为85.7%,准确性为94.1%,阳性预测值为93.9%,阴性预测值为94.7%。明显高于强化CT的66.0%、47.6%、60.3%、73.8%和38.5%(P<0.05)。结论:18F-FDG显像能明显提高结直肠癌转移复发的检出率,在不同部位转移复发的诊断中较常规影像学检查更有价值。
Objective: To study the diagnostic value of 18F-FDG imaging in the metastasis and recurrence of different parts of colorectal cancer after operation. Methods: The 18F-FDG dual-head coincidence line imaging, the same machine image fusion. Results: The sensitivity and specificity of 18F-PET / CT in the diagnosis of colorectal cancer recurrence were 100% and 100%, respectively, which were significantly higher than 61.5% and 84.1% of CT, respectively. The 18F-FDG PET / CT diagnosis of colorectal The sensitivity of peripheral lymph nodes and distant metastasis was 97.9%, the specificity was 85.7%, the accuracy was 94.1%, the positive predictive value was 93.9% and the negative predictive value was 94.7%. Was significantly higher than that of CT (66.0%, 47.6%, 60.3%, 73.8% and 38.5%, respectively) (P <0.05). Conclusion: 18F-FDG imaging can significantly improve the detection rate of metastasis and recurrence of colorectal cancer. It is more valuable than conventional imaging in the diagnosis of metastasis and recurrence of different sites.