"centring point"
"collimation"
"orientation portrait"
"detector size24 cm x 30 cm"
"exposure"
"SID100 cm"
"gridyes (this can vary departmentally)"
"orientation portrait"
"SID100 cm"
"patients who are supine for this view may become dizzy after a few minutes due to an increased intracranial pressure 4; the erect method may prevent this"