Deck 2: Introduction to Radiographic Equipment

Question 1

The principal source of scatter radiation is the:

A) x-ray tube.
B) collimator.
C) patient.
D) control booth.

Answer 1

patient.

Question 2

An invisible line in the center of the x-ray beam and perpendicular to the long axis of the x-ray tube is called the:

A) radiation field.
B) primary x-ray beam.
C) x-ray tube.
D) central ray.

Answer 2

central ray.

Question 3

The varying intensity of radiation that exits on the opposite side of the patient and reaches the IR is called __________ radiation.

A) scatter
B) fog
C) remnant
D) primary

Answer 3

remnant

Question 4

An IR that has been exposed to a body part but has not yet been processed has an unseen image called the:

A) latent image.
B) visible image.
C) remnant radiation.
D) radiation field.

Question 5

The radiation that exits the x-ray tube and travels in-air to the patient is called:

A) primary.
B) remnant.
C) scatter.
D) latent.

Question 6

Where is the image originally obtained and stored in computed radiography (CR)?

A) On a film
B) In a phosphor material
C) On a laser disk
D) In a microprocessor

Question 7

A tilting table will allow the head end to be lowered at least 15 degrees into the _____ position.

A) Trendelenburg
B) Sims
C) Fowler
D) supine

Question 8

The absorption of x-rays by matter is called:

A) scatter.
B) attenuation.
C) fog.
D) remnant radiation.

Question 9

The image receptor (IR)usually consists of the:

A) x-ray tube and the tube stand.
B) cassette and phosphor imaging plate.
C) control console and the transformer.
D) tube locks and the detent.

Question 10

The principal purpose of doing a "safety check" before making an exposure is to:

A) ensure a quality radiographic image.
B) prevent radiation hazard to yourself.
C) protect the patient from unnecessary exposure.
D) prevent accidental exposure of co-workers.

Question 11

A mechanism that tends to stop a moving part in a specific location is called a:

A) collimator.
B) control console.
C) transformer.
D) detent.

Question 12

The boxlike device attached under the tube housing that allows the limited operator to vary the size of the radiation field is called a:

A) collimator.
B) transformer.
C) detent.
D) tube port.

Question 13

Computed radiography (CR)eliminates the need for:

A) proper positioning.
B) proper collimation.
C) cassettes.
D) darkrooms.

Question 14

A device to protect the IR from being fogged by scatter radiation is called a:

A) collimator.
B) detent.
C) grid or Bucky.
D) cassette.

Question 15

Computed radiography (CR)is sometimes called a(n)_______ system.

A) "filmless"
B) "cassetteless"
C) "imageless"
D) "radiationless"

Question 16

The portion of the x-ray room that is protected from scatter radiation and is safe during exposures is called the:

A) transformer.
B) grid cabinet.
C) control booth.
D) tube stand.

Question 17

Tissues with greater mass,such as bone,will absorb ______ radiation,as compared with less dense tissues,such as fat.

A) more
B) less
C) equal amounts of
D) no

Question 18

Which of the following are common computed radiography sizes used for general examinations?
1) 5 × 5 in.
2) 10 × 12 in.
3) 14 × 17 in.

A) 1 and 2 only
B) 1 and 3 only
C) 2 and 3 only
D) 1, 2, and 3

Question 19

Which of the following statements regarding scatter radiation is true?

A) Scatter radiation is another term for remnant radiation.
B) Scatter radiation is created within the tube with the primary beam.
C) Scatter radiation has less energy than the primary beam.
D) Scatter radiation travels in one direction and is easy to control.

Question 20

X-rays that leave the x-ray tube exit via the:

A) tube housing.
B) tube port.
C) patient.
D) image receptor system.

Question 21

After an x-ray is taken and the image is stored in the computed radiography plate,it has to be processed in the:

A) darkroom.
B) PC computer.
C) image reader device.
D) microprocessor.

Question 22

The most frequent adverse incident that can happen to a patient in the radiology department is:

A) nausea.
B) falling.
C) back pain.
D) pinching fingers in the Bucky.

Question 23

Unwanted image exposure that is caused by scatter radiation is called:

A) primary radiation.
B) remnant radiation.
C) attenuation.
D) scatter radiation fog.

Question 24

The primary radiation that enters the patient and then leaves it,traveling in all directions is called:

A) primary.
B) scattered.
C) latent.
D) remnant.