Ortho- and lateral chest film is a kind of chest radiography, which is to image the lesions in the lungs in both orthostatic and lateral positions, mainly because the X-ray image it is a kind of overlapping image, for example, the orthostatic X-ray image has both anterior, central and posterior tissue structures, so it is easier to miss the diagnosis. In order to three-dimensional positioning and avoid different tissues obscuring each other, it is usually necessary to take photographs from two orientations perpendicular to each other, that is, orthostatic and lateral, so patients undergoing a chest examination usually have to take photographs of both positions, and if there is a problem, further CT examination is also needed. The chest of the orthostatic and lateral film, it is less radiation, the operation is relatively simple, convenient, and the price is relatively low, usually within 100 yuan.