Radiography Exam ARRT Radiography 2

Question 1

Which radiographic projection best demonstrates the carpal tunnel?

Accepted Answer

Tangential (inferosuperior) projection

Answer

The tangential (inferosuperior) carpal canal projection profiles the carpal tunnel and its contents.

Question 2

Scattered radiation reaching the image receptor is primarily reduced by using a:

Accepted Answer

Radiographic grid

Answer

A radiographic grid absorbs scattered photons before they reach the image receptor, improving image contrast.

Question 3

Which ionizing radiation interaction with matter is responsible for most scattered radiation in diagnostic imaging?

Accepted Answer

Compton scattering

Answer

Compton scattering is the predominant interaction in diagnostic energy ranges and produces most clinically relevant scatter.

Question 4

A patient's arm is externally rotated 45° for an AP oblique projection of the elbow. Which structure is best demonstrated?

Accepted Answer

Radial head and capitulum

Answer

The AP oblique elbow with external rotation (lateral oblique) profiles the radial head free of superimposition with the ulna.

Question 5

Which of the following is the recommended lead apron thickness for gonadal shielding in radiography?

Accepted Answer

0.50 mm Pb equivalent

Answer

A minimum of 0.50 mm lead equivalent is recommended for protective aprons used in diagnostic radiography.

Radiography Exam Practice Test