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计算机体层扫描(CT)对诊断肺癌起一定作用。CT可以发现被纵隔或胸壁遮蔽的病变、隐匿性病灶以及协助寻找痰细胞学检查为阳性,而传统X线检查为阴性的肺癌病例。一、肺部球形病灶CT扫描的目的1.原发恶性肿瘤作根治外科手术前,了解有无转移性病灶,2.示为孤立性球形病灶者:确定CT值,排除其它肺部病变,对已有转移灶病例,发现隐匿牲病变。二、纵隔及肺门附近病变CT扫描的意义1.估计部份被纵隔遮蔽的病变;2.测定病变衰减系数以
Computer tomography (CT) plays a role in the diagnosis of lung cancer. CT can find lesions hidden by the mediastinum or chest wall, occult lesions, and lung cancer cases that are positive for assisting in the search for sputum cytology, but are negative for traditional X-ray examination. First, the purpose of a spherical lesion on the lung 1. The primary malignant tumor before radical surgery, to understand whether there are metastatic lesions, 2. Demonstrated as a solitary spherical lesions: determine the CT value, exclude other lung lesions, There have been cases of metastases and occult lesions have been found. Second, the significance of CT scan near the mediastinal and hilar lesions 1. To estimate the part of the lesion covered by the mediastinum; 2. To determine the lesion attenuation coefficient