Centering Points and Collimation for Abdomen Lab Testing

AP Supine Abdomen

At level of iliac crest and MSP, 14” x 17” lw

AP Upright Abdomen

2” above iliac crest and MSP; 14” x 17” lw

RAO Esophagus

Position IR at top of lips, center the tube to the IR, and then move 2” lateral from MSP on the elevated side; 12” x 17” lw

RAO Stomach

Last palpable rib, midway between MSP and lateral border of left side of the body; 10” x 12” lw

LPO Stomach

1” above last palpable rib, midway between MSP and lateral border on left side of body; 10” x 12” lw

AP 30 Minute (Small Bowel)

2” above iliac crests at MSP; 14” x 17” lw

AP Axial (Recto-Sigmoid Area)

35º cephalad angle at MSP and 2” below ASIS; 10” x 12” lw

RPO Colon

2” lateral to MSP on elevated side at level of iliac crest; 14” x 17” lw

Lateral Rectum

MCP at level of ASIS; 10” x 12” lw

AP KUB

MSP and iliac crest; 14” x 17”

AP Nephrogram

MSP and last palpable rib; 11” x 14” CW

RPO KUB

Iliac crests, 2” lateral to MSP on elevated side; 14” x 17” lw

AP Cystogram (Bladder)

MSP and 2” below ASIS; 10” x 12” CW

AP Axial Cystogram (Bladder)

10º caudal, 2” below ASIS at MSP; 10” x 12” lw

RPO Cystogram (Bladder)

2” below ASIS, 2” lateral to MSP on elevated side; 10” x 12” lw