Comparison of lung thin layer ct and 3D reconstruction, 3D reconstruction will be more accurate. 1. Lung thin layer CT: It means that the thickness and spacing of the thin layer is less than five millimeters. Thin-layer CT of the lungs can check for small nodules in the lungs. Small nodules in the lungs often require a thin-layer CT scan of the lungs, which can be easily missed by a thick-layer CT or chest X-ray, and even sometimes require an enhanced CT examination. 2. 3D reconstruction: It is based on the data of plain scanning and various coronal, sagittal and horizontal positions, which are re-synthesized with a later computer. After integrating the acquired coronal, sagittal and horizontal data to restore a three-dimensional image of the organ, it is possible to visualize where there is a lesion, and by adding color according to the amount of blood flow, it looks more intuitive. Therefore, when comparing lung thin layer ct and 3D reconstruction, 3D reconstruction will be more accurate. 3D reconstruction of a lesion allows for optimal lesion exposure as well as the best diagnostic view, identifying lesions missed by thin-layer CT and allowing for more accurate lesion localization. Lung 3D reconstruction can supplement the shortcomings of thin-layer CT examination, which is conducive to further diagnosis and treatment of the disease. Any discomfort or other symptoms in the lungs that continue to be unrelieved should be promptly diagnosed in the hospital, and standardized treatment should be carried out under the guidance of the doctor.