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目的 研究胸部计算机放射摄影 (CR)术在肺癌诊断中的价值。方法 经手术病理证实的肺癌 5 6例 ,其中中央型肺癌3 4例 ,周围型肺癌 2 2例。 4种胸部CR图像 :平片CR( plainCR)、宽幅高频响应CR(wideCR )、高频响应CR(HE -CR )、低频响应CR (LE -CR) ;2种胸部CR体层摄影 :平片CR体层摄影 (plainCR -TOMO)、高频CR体层摄影 (HE -CR -TOMO) ;分别与传统胸片及传统体层摄影在正常结构及异常阴影的显示进行对比。结果 ①正常结构的观测 :除wideCR、HE -CR对右下肺动脉的显示不如常规X线 (CXR)外 ,其余项目的各种CR图像均不同程度地优于CXR。体层摄影 :所有观测项目 ,CR体层摄影均优于CXR体层摄影。②异常阴影的观测 :中央型肺癌 ,PlainCR与LE -CR对所有观测项目的显示均优于CXR ;wideCR对受累支气管的显示优于CXR ,而对肿块内部密度分布及周围血管影的显示与CXR相同 ,对肺门肿块边缘的显示不如CXR。HE -CR所有观测项目均不如CXR。周围型肺癌 ,plainCR、LE -CR对肿块边缘特征及空洞的显示优于CXR ,而对密度分布的显示与CXR相同 ;wideCR对肿块边缘特征的显示不如CXR ;HE -CR对所有观测项目的显示均不如CXR。体层摄影 :PlainCR -TOMO及HE-CR -TOMO均优于CXR体层摄影。结论 通过对胸部正常结构及异常阴影的CR与C
Objective To study the value of chest computer radiography (CR) in the diagnosis of lung cancer. Methods Fifty-six patients with lung cancer confirmed by surgery and pathology were identified, including 34 cases of central lung cancer and 22 cases of peripheral lung cancer. Four types of chest CR images were plainCR, wideCR, HE-CR, and low-frequency CR (LE-CR); two types of chest CT: PlainCR-TOMO and HE-CR-TOMO were compared with those of traditional chest radiography and conventional tomography in normal structures and abnormal shadows respectively. Results ① Observation of normal structure: In addition to wideCR, HE-CR showed lower right pulmonary artery than conventional X-ray (CXR). All other CR images were superior to CXR in varying degrees. Tomography: All observations, CR tomography were better than CXR tomography. ② abnormal shadow observation: central lung cancer, PlainCR and LE -CR for all the observations show better than CXR; wideCR bronchial involvement of the better than CXR, and the mass density distribution and the surrounding blood vessels showed CXR The same, the hilar mass showed less edge CXR. All observations of HE-CR are not as good as CXR. Surrounding lung cancer, plainCR, LE -CR on the mass edge features and voids showed better than the CXR, and the density distribution of the same display and CXR; wideCR on the edge of the mass display CXR; HE-CR for all observations of the project Not as good as CXR. Tomography: PlainCR-TOMO and HE-CR-TOMO are superior to CXR tomography. Conclusion Through the normal structure of the chest and abnormal shadow of CR and C