Final

Question 1

Where does radiation exposure come from?

Answer 1

scatter radiation

x-ray tube head ?

Question 2

X-ray are a form of

Answer 2

electromagnetic radiation

Question 3

What is the majority of energy produced in the x-ray tube

Answer 3

heat

Question 4

The anode consists of a

Answer 4

tungsten target

Question 5

The cathode provides

Answer 5

electrons

Question 6

Rotating anodes cause an increase intensity of the x-ray beam on the cathode side. This is called

Answer 6

heel effect

Question 7

electron

Answer 7

particle that is negatively charged and travels around the center of an atom

Question 8

frequency

Answer 8

number of cycles of the wave that pass a stationary point per second

Question 9

wavelength

Answer 9

distance between 2 consecutive corresponding points on a wave

Question 9

Why is it important that x-rays are created in a vacuum

Answer 9

prevent dust particles from interfering in production

Question 10

What does milliamperage (mA) control

Answer 10

Number of electrons boiled off
degree of blackness
number of x-ray produced

Question 11

What does kilovoltage peak control

Answer 11

penetrating power
degree of contrast
shades of gray

Question 12

Select all the tissues that are particularly susceptible to radiation damage

Answer 12

Skin
Blood

Question 13

The best place to wear your dosimeter badge is under you lead apron during radiograph procedures

Answer 13

False

Question 14

What is the MPD for occupationally exposed people

Answer 14

5 REM

Question 15

What is not part of proper protective apparel

Answer 15

lab coat

Question 16

An overexposed film will be to light

Answer 16

False

Question 17

Which is not a physical property of x-rays

Answer 17

x-ray travel in a wave

Question 18

The purpose of a grid is to

Answer 18

absorb scatter and non-image forming x-rays

Question 19

Order the density of the following tissues from the least dense (1) to the most dense (5)

Answer 19

1. Air
2. Fat
3. Water/muscle
4. Bone
5. Metal

Question 20

As the focal film distance decreases, the intensity of the x-ray increases. This rule is called

Answer 20

inverse square law

Question 21

The grid is located between the x-ray tube and the patient

Answer 21

False

Question 22

Which is a contraindication of using barium for GI studies

Answer 22

suspected perforation of GI tract

Question 23

To produce good quality radiographs of the thorax and abdomen, you need ___ contrast

Answer 23

low

Question 24

bisecting

Answer 24

beam is projected at a right angle to an imaginary line that cuts in half the angle formed by the place of the film and the long axis of the tooth

Question 25

parallel

Answer 25

beam is projected at a right angle to the film and long axis of the tooth

Question 26

Which way should the tube head be directed. if excessive elongation occurs with dental x-rays

Answer 26

more toward the sensor

Question 27

What is the goal for dental imaging

Answer 27

get a complete image of the root

Question 28

Anechoic

Answer 28

no echo are returned to the transducer resulting in a black image

Question 29

Hyperechoic

Answer 29

echoes produced are brighter than the surrounding tissue

Question 30

Hypoechoic

Answer 30

a few echoes are detected and the area is low level gray compared with adjacent tissues

Question 31

What causes acoustic shadowing? Interaction of sound waves with ...

Answer 31

Bone

Question 32

Technetium 99m used in nuclear scintigraphy has a long half life, therefore animals are usually released after 5-6 days post administration of drug.

Answer 32

false

Question 33

Ultrasound examinations of the equine primarily below the carpus/tarsus

Answer 33

False

Question 34

Depth

Answer 34

allows you to put the patient area of interest in the biggest part of the image

Question 35

Gain

Answer 35

affects the brightness of the image

Question 36

Time-gain compensation

Answer 36

allows you to change gain in the near, far or entire image

Question 37

which rang of frequencies are used for most small animal ultrasound procedures

Answer 37

2-15 mHz

Question 38

Comet tail

Answer 38

sound waves interacting with metal objects

Question 39

Distance enhancement

Answer 39

sound beam travels through a fluid-filled structure

Question 40

Reverberation

Answer 40

repeated back and forth reflection of sound waves between two highly reflective surfaces

Question 41

Which type of image receptor captures the distribution of the radioactivity of a radiopharmaceutical injection with gamma-ray camera

Answer 41

nuclear scintigraphy

Question 42

What special imaging unit is used to identify and irradiate abnormal thyroid tissues in cats

Answer 42

nuclear medicine

Question 43

Which is the most common indication form nuclear bone scan

Answer 43

lameness that cannot be localized

Question 44

Fluoroscopy produces an continuous image

Answer 44

True

Question 45

Select all the uses of fluoroscopy units

Answer 45

swallowing heart vascular studies

Question 46

Which of the following materials does not require special handling following injection of Technetium-99

Answer 46

Hair

Question 47

Any anesthesia machine can be used with performing an MRI

Answer 47

Falsse

Question 48

A high frequency probe produces better resolution and detail images than a low frequency probe

Answer 48

True