Radiography Exam Radiography 5

Question 1

Which type of grid is most effective at removing off-angle scatter?

Accepted Answer

Crossed grid

Answer

A crossed grid (two parallel grids at 90° to each other) removes scatter in all directions and is the most effective type, though it requires precise patient/tube alignment.

Question 2

Which projection of the lumbar spine best demonstrates the zygapophyseal (facet) joints on the side CLOSEST to the image receptor?

Accepted Answer

Oblique projection toward the IR side

Answer

In lumbar spine obliques, the facet joints closest to the IR (downside) are demonstrated on the RPO/LPO projection toward that side.

Question 3

A radiographer notices that a patient's blood pressure is 90/60 mmHg and the patient is diaphoretic. What is the BEST initial action?

Accepted Answer

Notify the radiologist or supervising physician immediately

Answer

Hypotension (90/60) with diaphoresis may indicate shock or a serious medical event; the radiographer must immediately notify the supervising physician.

Question 4

Which anatomical landmark is used to center the CR for a PA projection of the hand?

Accepted Answer

Third MCP joint

Answer

For a PA hand projection, the central ray is directed to the third metacarpophalangeal (MCP) joint to center the image of all five digits.

Question 5

Which type of contrast agent is used to evaluate the large intestine for suspected polyps?

Accepted Answer

Barium sulfate double-contrast enema

Answer

A double-contrast barium enema uses barium sulfate to coat the mucosal surface and air to distend the colon, providing optimal visualization of small polyps.

Radiography Exam Practice Test

Radiography Exam Practice Test

Radiography Exam Radiography 5