For an AP projection of the hip with accurate positioning,
1)the ASISs are positioned at equal distances from the IR.
2)the patient's legs are externally rotated until the epicondyles are at a 45-degree angle with the imaging table.
3)gonadal shielding should not be used.
4)the central ray is centered 1.5 inches (4 cm) distal to the midpoint between the ASIS and symphysis pubis to center the hip joint in the field.
A) 1 and 4 only
B) 2 and 3 only
C) 1, 3, and 4 only

Question

Quizplus · Accepted Answer

ASISs should be positioned equally to ensure the hip joint is properly aligned with the IR. The legs should be externally rotated to 45 degrees to open up the femoral neck and joint space. Gonadal shielding is important for patient safety in this exam, but it should still be used, just not directly over the hip joint or obstructing any anatomy. Centering 1.5 inches distal to the midpoint between the ASIS and symphysis pubis is the standard for centering the hip joint in the field.

For an AP Projection of the Hip with Accurate Positioning