Mammograms are more commonly used in breast examinations and are basically carried out in most hospitals at a cost of between 200 and 300 yuan. Some people are advised to do MRI after the mammogram. It is not recommended to wear underwear before doing the mammogram to avoid interfering with the imaging results. Routine mammograms require four photos with different orientations to show a more complete picture, which are bilateral axial, bilateral lateral and oblique. It is necessary to use a breast splint to hold the breast during the examination operation, in order to better expose most of the breast tissue. A suitable examination period is needed, and it is better to go for examination 2-3 days after menstruation.