For example, in the case of hematogenous tuberculosis, the imaging changes tend to be mainly diffuse nodular changes, with pulmonary nodules about 2 mm in diameter. The size of other types of tuberculosis lesions is uncertain because it depends on the degree of infection, the duration of infection, and the type of tuberculosis, but the larger the tuberculosis lesion, the more lung tissue it invades, and the longer the treatment period may be, so early and effective treatment is very important. Therefore, early and effective treatment is very important.