RAD Quiz 18

A black film indicates accidental exposure to white light.

• True

• False

A herringbone or tire track pattern appears on the image if the film packet was placed in the oral cavity reversed.

• True

• False

Assembling an image receptor holder with external aiming device incorrectly may lead to conecut error.

• True

• False

Electronic noise is the digital equivalent of film fog.

• True

• False

The image receptor should be placed with the long dimension horizontal for exposure of anterior periapical radiographs.

• True

• False

Misuse of a cotton roll to stabilize the image receptor may result in root tips being cut off from the image.

• True

• False

Which of the following identifies the cause and corrective action for an image with overlapping of the proximal contacts in which the overlap appears more severe in the posterior region than the anterior region?

• Distomesial projection of the central ray caused the error. Shift the tube toward the anterior to correct this error.

• Mesiodistal projection of the central ray caused the error. Shift the tube toward the posterior to correct this error.

Failing to record the apical region of the teeth on a periapical radiograph most likely results from an error made in which of the following steps?

• Horizontal angulation

• Vertical angulation