ABSTRACT
Positioning for antero-posterior supine projection of the abdomen. https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315382210/8ca82e7c-bd07-4171-b4f5-ebaded57b5b3/content/fig2_1a.jpg" xmlns:xlink="https://www.w3.org/1999/xlink"/>
The patient lies supine on the imaging table with the median sagittal plane at right angles and coincident with the midline of the table.
The pelvis is adjusted so that the anterior superior iliac spines are equidistant from the table top.
If a computed radiography (CR) cassette is selected, it is placed longitudinally in the cassette tray (if patient habitus allows) and positioned so that the region below the symphysis pubis is included on the lower margin of the image.
The centre of the image receptor will be approximately at the level of a point located 1 cm below the line joining the iliac crests. This will ensure that the region inferior to the symphysis pubis is included on the image.
