5. Radiographic Procedures

Lower Extremity — Quiz

Test your understanding of lower extremity with 5 practice questions.

Practice Questions

Question 1

Why is internal rotation of the femur by 15–20° recommended in an AP hip projection?

Question 2

In a trauma axiolateral (Danelius–Miller) hip projection, how should the image receptor and central ray be positioned?

Question 3

If a radiograph uses a source-to-image distance (SID) of 100 cm and an object-to-image distance (OID) of 20 cm, what is the magnification factor?

Question 4

In an AP weight-bearing knee projection, a patient’s thigh thickness measures 18 cm. Which central ray angle is recommended?

Question 5

For an AP mortise ankle projection, how should the foot be rotated and where is the central ray centered?