Radiography Techniques Quiz

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Questions and Answers

What should be the tube positioning if an image receptor is placed in the Bucky for femur imaging?

  • In the center lock (correct)
  • Off-center
  • At the edge of the Bucky
  • Near the cathode

Why might a grid not be required for femur imaging in some patients?

  • They have thin thighs
  • They are elderly
  • They have thick knees
  • They have small femurs (correct)

What is the purpose of using anode heel effect in femur imaging?

  • To compensate for varying tissue thickness (correct)
  • To reduce artifact formation
  • To improve image contrast
  • To enhance resolution at the knee end

Which area should the cathode be positioned at for femur imaging?

<p>Hip area (B)</p> Signup and view all the answers

What must be included in the standard projections (AP LATERAL) for femur imaging on the initial examination?

<p>Both joints (D)</p> Signup and view all the answers

When imaging the proximal femur and hip, how should the limb be positioned to prevent foreshortening of the femoral neck?

<p>Internally rotated 15°-20° (A)</p> Signup and view all the answers

Where should the bottom of the image receptor (IR) be placed for a femur imaging procedure?

<p>2 inches below the knee joint (C)</p> Signup and view all the answers

Why is it important to include the entire prosthesis and 1.5 inches below it in femur imaging?

<p>To detect fractures below the prosthesis due to excessive weight (C)</p> Signup and view all the answers

How should a patient lie for a mediolateral lateral projection of the entire femur when non-traumatic imaging is required?

<p>On their unaffected side (C)</p> Signup and view all the answers

What should be done if the entire femur does not fit on one image receptor (IR) during imaging?

<p>Keep the unaffected leg behind and roll the pelvis posteriorly (B)</p> Signup and view all the answers

How can you prevent superimposition of femoral condyles during a lateral distal femur projection?

<p>Use a horizontal beam with a grid (A)</p> Signup and view all the answers

When performing a lateral proximal femur imaging, why should the unaffected thigh not overlap the proximal hip joint?

<p>'To ensure proper alignment of the femoral shaft (A)</p> Signup and view all the answers

What should be done to place the femoral neck parallel to the image receptor for a true AP of the proximal femur?

<p>Rotate the femur internally 15° to 20° (B)</p> Signup and view all the answers

What is the angle of the longitudinal plane of the femur from the vertical?

<p>10° (A)</p> Signup and view all the answers

What is the angle of the head and neck in relationship to the shaft of the femur?

<p>15° to 20° (B)</p> Signup and view all the answers

What field size is required for imaging the femur?

<p>Two 14 x 17 and may also require two 10 x 12 (C)</p> Signup and view all the answers

What technique should be used for imaging the femoral shaft or proximal femur?

<p>AP view (D)</p> Signup and view all the answers

What is the purpose of using the anode heel effect in femur imaging?

<p>To increase the penetration of the x-ray beam (C)</p> Signup and view all the answers

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