Apnea Index (#/hour)

N2%

Which Image uses a 10° caudal angle?

For the RPO and LPO positions for the sacroiliac joints:

Which image requires the CR to be angled 5° to 8° caudally? Image G                      Image H

Which Image represents the positioning for the oblique lumbar spine?

A radiograph of an AP axial L5-S1 projection reveals that the joint space is not open. The following factors were used on this female patient: 80 kV, 40-inch (102-cm) SID, grid, 35° caudad angle, and CR centered to the ASIS. Which of the following factors needs to be modified to produce a more diagnostic image?

A radiograph of a left posterior oblique (LPO) projection of the lumber spine reveals that the downside pedicle is projected too far posterior on the vertebral body. What specific positioning error is present on this radiograph?

A patient enters the ED with a cervical spine injury as a result of a fall. The initial horizontal beam lateral projection reveals no subluxation or fracture.  The ED physician is concerned about a whiplash injury.  Which of the following routines would be most helpful in diagnosing this type of injury?

With reference to the patient, where should the top border of the IR or collimated field be positioned for the AP projection of the thoracic vertebrae?