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目的探讨64层CT多向调整多平面重组(MPR)对周围型肺癌征象的检出。方法收集病理证实的周围型肺癌45例,64层CT胸部各向同性扫描后行肿瘤靶重建及多向调整MPR重组,并与横断薄层重建图像对比分析。结果(1)MPR对CT支气管征、血管集束征、深分叶征、叶间胸膜凹陷征及破坏征的检出率高于薄层横断面重建图像;对细短毛刺征、叶间裂以外胸膜凹陷征的检出与横断薄层重建图像无差别。(2)MPR对空泡征和CT支气管征的判别有优势。(3)MPR对3种及以上CT征象的显示率高于横断薄层重建图像。结论64层CT多向调整MPR有利于提高周围型肺癌征象的检出。
Objective To explore the detection of signs of peripheral lung cancer by 64-slice CT multiplanar adjustment multiplanar reconstruction (MPR). Methods Forty-five patients with pathologically confirmed peripheral lung cancer were collected. Sixty-four CT images of the thorax were retrospectively analyzed. Tumor target reconstruction and multi-directional MPR reconstruction were performed and compared with those of transthoracic thin-section reconstruction. Results (1) The detection rate of MPR on CT bronchus, clustering of blood vessels, deep lobulation, pleural indentation and destruction of CT was higher than that of thin layer cross-sectional reconstruction. The detection of pleural indentation is no different from the transverse thin-layer reconstruction. (2) There is an advantage of MPR in distinguishing between vacuole sign and CT bronchial sign. (3) The display rate of CT signs of three kinds or more of MPR is higher than that of transected TLC images. Conclusion 64-slice CT multi-directional adjustment of MPR is beneficial to improve the detection of peripheral lung cancer signs.