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目的:分析肺癌的MRI信号特点,以探讨MRI在肺癌诊断中的价值。方法:回顾性分析30例肺癌MRI表现,以同层椎体为背景,按高、中、低三种等级将30例肺癌统计T2WI、T1WI信号强度变化。结果:中央型19例,在T2WI上呈高信号8例,等信号11例,信号均匀11例,信号不均匀8例;在T1WI上呈略高信号7例,等信号11例,低信号1例,信号均匀15例,不均匀4例。周围型11例,在T2WI上呈略高信号6例,等信号5例,信号均匀6例,信号不均匀5例;在T1WI上略高信号3例,等信号8例,信号均匀7例,信号不均匀4例。增强7例均显示明显强化,肿块与纵隔淋巴结呈一致性强化,肿块呈慢强化,阻塞性肺炎呈快速强化,坏死和纤维组织强化不明显。结论:肺癌的MRI平扫信号在T2WI上以稍高信号至等信号为主,在T1WI上以等信号至稍低信号为主,T2WI能区别实质性肿块与坏死、纤维组织和阻塞性病变,MRI扫描对肺癌制定治疗方案具有重要价值。
Objective: To analyze the characteristics of MRI signal in lung cancer to explore the value of MRI in the diagnosis of lung cancer. Methods: The MRI findings of 30 lung cancer patients were retrospectively analyzed. The changes of signal intensity of T2WI and T1WI in 30 cases of lung cancer were analyzed with the same level of vertebral bodies. Results: The central type in 19 cases, high signal on T2WI in 8 cases, equal signal in 11 cases, uniform signal in 11 cases, uneven signal in 8 cases; slightly higher signal on T1WI in 7 cases, equal signal in 11 cases, low signal 1 For example, the signal was uniform in 15 cases, non-uniform in 4 cases. 11 cases of peripheral type showed slightly higher signal on T2WI in 6 cases, 5 cases of equal signal, 6 cases of uniform signal and 5 cases of non-uniform signal. In T1WI, there were 3 cases of slightly high signal, 8 cases of equal signal and 7 cases of even signal, Inhomogeneous signal in 4 cases. Enhanced 7 cases showed significantly enhanced lumps and mediastinal lymph nodes showed consistent enhancement, slow mass enhancement, obstructive pneumonia was rapidly enhanced, necrosis and fibrous tissue enhancement is not obvious. Conclusion: MRI plain scan signal of T2WI is mainly from slightly higher signal to equal signal on T1WI, and isobaric signal is slightly lower on T1WI. T2WI can distinguish the main tumor from necrosis, fibrous tissue and obstructive lesion, MRI scan for the development of treatment of lung cancer programs of great value.