Quiz 6 (RADS 220)

Abdomen procedures kVp

80-85

Exposure time for abdomen procedures

1/2 second or less to block any visceral peristalsis (motion)

Focal Spot used for Abdomen Procedures

Large Focal Spot

Should you do AP or PA for abdomen procedure?

PA whenever possible because it produces less scatter and reduces dose to ovaries

Abdomen procedure may also be called

KUB, Supine abdomen, AP abdomen

KUB

kidneys, ureters, bladder

Light size for Abdomen Procedures

14 x 17

SID for all abdomen projections

40 in

Supine Abdomen (KUB) position

MSP centered to the midline, arms at sides, legs uncrossed,

CR for Supine Abdomen (KUB)

Center to top of iliac crests and midline, directed perpendicular to midpoint of IR

Tall patients may require

2 radiographs ;'(14x17 & 10 x12)

Structures shown for Supine Abdomen (KUB)

-size and shape of liver, spleen, and kidneys

-any calcifications or tumor masses within abdominal cavity

Evaluation Criteria for Supine Abdomen

-includes symphysis

-upper margin of kidneys

-spine in center

-no rotation

-lateral collimation should be visible

-soft tissue gray tones

AP Upright/ Erect Abdomen includes the

diaphragm

AP Upright/ Erect Abdomen is used to check for

-air fluid levels

-movement of abdominal organs

-obstruction

-drainage of ureters in IVU examinations

CR for AP Uright/ Erect Abdomen

perpendicular to IR at a transverse level of 2 in above the iliac crest or high enough to include diaphragm

SS for AP upright/ erect abdomen

show size and shape of liver, spleen, kidneys, abdominal masses, air fluid levels, accumulation of gas or free intra abdominal air

EC for AP uright/erect abdomen

no rotation, vertebral column aligned to center of the radiograph, should visualize lateral collimation, R or L marker at bottom,

-diaphragms included as well as costophrenic angles and lateral margins of abdomen

2-way abdomen series

AP supine and AP upright

-"flat & erect abdomen"

Supine Abdomen must include

symphysis pubis