- Abnormal masses, air fluid levels, and accumulations of intraperitoneal air under diaphragm are demonstrated.
- Perform erect radiograph first if patient comes to department ambulatory or in wheelchair in an erect position.
- IR size - 35 x 43cm (14 x 17 inches), lengthwise
- Moving or stationary grid (use erect markers)
- 70 to 80 kV range
- Include erect marker on IR.
- Used gonadal shield on males. An adjustable freestanding mobile shield can be used as for chests.
|AP abdomen Erect|
- Upright, legs slightly spread, back against table or grid device (see note below for weak or unsteady patients)
- Arms at sides away from body
- Midsagittal plane of the body centered to midline of the table or erect Bucky
- Do not rotate pelvis or shoulders.
- Adjust height of IR so the center is approximately 2 inches (5cm ) above iliac crest (to include diaphragm), which for the average patient will place the top of the IR approximately at the level of the axilla.
- CR horizontal, to center of IR
- Minimum SID of 40inches (100cm)
- Collimate closely on all four sides; do NOT cut off upper abdomen.
- Exposure should be made at end of expiration.
- Patient should be upright a minimum of 5 minutes, but 10 to 20 minutes is desirable, if possible, before exposure for visualizing small amounts of intraperitoneal air. If a patient is too weak to maintain an erect position, a lateral decubitus should be taken. For hypersthenic patients, two crosswise IRs may be required to include the entire abdomen.