Supine, legs extended, arms at sides 

midsagittal plane aligned and centered to centerline 

ensure no rotation (ASISs equal distance from tabletop)

Center of IR to level of iliac crests, ensuring that upper margin of symphysis pubis is included on lower IR margin 

CR perpendicular  to center IR ( level of iliac crest)

102-113 cm 

To abdomen or IR borders 

expose at end of expiration

size : 35 x 43 cm 

lengthwise 

grid 

kVp : 70 - 80 

mAs : 60