Briefly describe the steps and precautions of X-ray photography.

(1) Read the application form, check the patient's name, gender, age, and specify the location and purpose of the examination.

(2) Determine the projection position, select the film with appropriate size, and arrange the photo marks such as X-ray film number, date, left and right, and order.

(3) Make preparations before projection, and take off clothes that affect the projection position; Abdominal photography should also clean the intestines.

(4) Set the projection position, and the patient's limbs should be placed smoothly and comfortably; Select the appropriate focal length and aim at the center line.

(5) According to the limb thickness, the patient's age and physique, select the appropriate projection conditions.

(6) Reasonable selection of line filter or other line filtering equipment according to the projection position.

(7) When projecting the chest and abdomen, the patient should be trained to breathe and hold her breath.

(8) Start the machine, adjust the knob on the console, and check the instructions of the pointer. In the process of exposure, we should pay close attention to the work of the machine instrument pointer in order to find the machine fault in time.

(9) For complicated projection, when the X-ray film is developed and meets the diagnostic requirements, let the patient leave; If there are any mistakes, they should be supplemented in time.

(10) Fill in the photographic records and various technical conditions and sign them.