Nil by mouth for 4-6 hours before the examination. Patient to remain ambulant as long as possible to reduce air swallowing. Adaptations to patient preparation will be required for certain groups of patients e.g. children, diabetics and patients with other predisposing medical conditions, in line with current department practice. The patient lies supine on the table midline aligned to the midline of the table. The vertical central ray is centered in the midline at the level of L3 at the lower costal margin, It may be necessary to alter the centering position to ensure the upper margin of the renal outlines are visible and the symphysis pubis.
Exposure is made on suspended expiration.
The vertical central ray is centered in the midline at the level of the midpoint of the upper and lower borders of the renal outlines. Exposure is made on suspended expiration. Exposure is made on suspended expiration. Supplementary films to determine position of any opacities. Inspiration film of renal areas for suspected calculi.