结论：MSCT灌注成像有助于周围型肺癌的诊断及与良性肿瘤的鉴别诊断，其病理基础与肿瘤微血管密度有关。

Conclusion: it is helpful to diagnose the peripheral lung cancer with MSCT perfusion imaging and to differentiate it from pulmonary benign masses, its basis was MVD pathologically.

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目的评价颌面部恶性肿瘤CT表现与微血管密度(MVD)及增殖细胞核抗原(pcna)表达的关系。

Objective To evaluate the relationship between ct features and microvessel density (MVD) and proliferating cell nuclear antigen (PCNA) in cases of malignant maxillofacial tumors.

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肿瘤组织中微血管密度值高于正常肾脏组织，与肿瘤的病理分期及组织学分级呈正相关。

The MVD value in tumor tissues was much higher than in normal kidney tissues and was positively related to the tumor stage and grade.

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