Objective To evaluate the clinical application of two dimensions reconstruction(TDR) and multiple planes reconstruction(MPR) technique with multiple slices spiral CT in diagnosis for peripheral pulmonary carcinoma(PPC).Methods 17 cases of peripheral pulmonary carcinoma were examined with the multiple slices spiral CT scan and MPR.Results The imaging of TDR revealed the internal structure ,burr sign and petaline sign of PPC and the surrounding vessels of focus. It also showed the spatial structure between focus and pleural , mediastine. But the area and the features of the imaging of TDR were limited. The MPR could reveal the spatial structure between focus and pleural , mediastine in many aspects .It also revealed the features of pulmonary carcinoma and the spatial structure between focus and surrounding tissue.Conclusion It is valuable for diagnosis of peripheral pulmonary carcinoma that application of MPR based on the imaging of two dimensions reconstruction.

Objective To assess the value of the clinical application of two dimensions reconstruction and surface shaded display (SSD) with multiple slices spiral CT in diagnosis of peripheral pulmonary carcinoma .Methods Peripheral pulmonary carcinomas in 35 cases were scanned by multiple slices spiral CT. The source images of CT were reconstructed by two dimensions reconstruction and surface shaded display (SSD) techniques.Results The images of two dimensions reconstruction could show the internal structure of lesions,lobulated sign burr sign,the vessels surrounding the focus,and the relation between focus and pleural as well as mediastina,but the relation of tumor and the organs surrounding the tumor could be showed not stereoscopically and directly.The images of SSD could not only reveal the relation between focus and surrounding organs in different dirctions but also revealed the features of pulmonary carcinoma stereoscopically and directly.Conclusion It is valuable for diagnosis of peripheral pulmonary carcinoma that application of SSD based on the images of two dimensions reconstruction.