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孤立性肺结节(SPN)是胸部影像学常见征象,是指肺实质内直径≤30 mm、单发的、圆形或类圆形、完全被肺实质包围的致密影,边界清晰或不清晰,病灶内多数无钙化、空洞,不伴肺不张、卫星病灶或肺门、纵隔淋巴结肿大[1]。SPN可见于不同性质的病变,是多种良、恶性疾病的共同表现,而其中最为常见者是肺癌[2]。既往SPN的CT灌注研究,大部分只是动态增强扫描,或者是部分容积灌注扫描,并非真正的容积灌注。本研究利用炫速双源CT对
Solitary pulmonary nodules (SPNs) are common signs of thoracic imaging and refer to the dense inner shadow of the lung parenchyma ≤30 mm in diameter, solitary, round or oval, completely surrounded by the lung parenchyma with clear or unclear boundaries , The majority of lesions without calcification, empty, not associated with atelectasis, satellite lesions or hilar, mediastinal lymph nodes [1]. SPN can be seen in different types of lesions, is a common manifestation of a variety of benign and malignant diseases, of which the most common is lung cancer [2]. Previous CT perfusion studies of SPN, most of them only dynamic enhanced scan, or partial volume perfusion scan, not a real volume perfusion. This study uses Hyun-speed dual-source CT pairs