RPROCH ENDTERM

Question 1

A type of x-ray tube that is located under the examining table

Answer 1

Fluoroscopic x-ray tube

Question 2

Type of x-ray tube that is attached to overhead movable crane and it permits easy positioning of tube & aiming the x-ray beam

Answer 2

Radiographic x-ray tube

Question 3

A component of fluoroscope that selects the mA & kvp of the machine

Answer 3

x-ray generator

Question 4

A component of fluoroscope that converts electric energy provided by generator

Answer 4

x-ray tube

Question 5

A component of fluoroscope that converts incident x-rays to minified visible light image of high intensity

Answer 5

Image intensifier

Question 6

A component of fluoroscope that converges image

Answer 6

Focusing lens

Question 7

A component of fluoroscope that records image

Answer 7

Video camera

Question 8

A component of Fluoroscope that captures real time image & displays

Answer 8

Charged-coupled device (CCD)

Question 9

Converts x-ray beam to visible light image

Answer 9

Image intensifier tube

Question 10

Approx. length of II tube and its potential difference

Answer 10

20 cm
25,000v

Question 11

An element of II tube that converts x-ray to visible light photons

Answer 11

Input phosphor

Question 12

It is made up of Cesium

Answer 12

Input phosphor

Question 13

Why is cesium used in input phospor

Answer 13

increases spatial resolution

Question 14

An element of II tube that converts light to electrons; emits electrons when illuminated by input phosphor

Answer 14

Photocathode

Question 15

Photocathode is composed of _ & _ compounds

Answer 15

Cesium & Antimony

Question 16

An element of II tube that has a series of lenses containing positive charges and maintains proper focus & kinetic energy of photoelectrons; minifies electrons

Answer 16

Electrostatic focusing lens

Question 17

An element of II tube that attracts & accelerates electrons towards output screen and is donut shaped

Answer 17

Accelerating anode

Question 18

The accelerating anode has _ potential difference

Answer 18

25,000 v

Question 19

An element of II tube that is the site where accelerated electrons interact & produce light

Answer 19

Output Phosphor

Question 20

Output Phosphor is made up of_

Answer 20

ZCS

Zinc Cadmium Sulfide

Question 21

The process that reduces the contrast of II tube ; internal scatter radiation in form of x-rays, electron, and light

Answer 21

Veiling glare

Question 22

Veiling glare is also known as

Answer 22

Scattering light

Question 23

It is the reduction or fall-off in brightness; unequal collection of light in the center of image

Answer 23

Vignetting

Question 24

Produces different magnification in images and provides flexibility in all fluoroscopic examinations

Answer 24

Multifield image intensification

Question 25

Trifield tube common sizes

Answer 25

12 17 25

Question 26

Magnification mode results in _ _ & _

Answer 26

better spatial resolution, contrast, & higher patient radiation dose

Question 27

Type of radiation that is not harmful and not capable of ionizing medium

Answer 27

Non-ionizing radiation

Question 28

Type of radiation that is harmful and capable of ionizing

Answer 28

Ionizing Radiation

Question 29

3 Ionizing radiation

Answer 29

X- ray Gamma Ray Alpha Radiation

Question 30

4 Non-ionizing radiation

Answer 30

Radiofrequency Infrared Ultraviolet light Visible light

Question 31

Type of ionizing radiation that travels in a space possessing either mass or charge; emitted by radioactive substance

Answer 31

Particulate Radiation

Question 32

What energy does particulate radiation possesses

Answer 32

Kinetic energy

Question 33

Type of ionizing radiation that travels in waveform and at the speed of light; it has no mass & no charge accompanied by electrical & magnetic field

Answer 33

Electromagnetic Radiation

Question 34

What energy does Electromagnetic Radiation possess

Answer 34

Potential energy

Question 35

Particulate Radiation includes:

Answer 35

Alpha Beta Neutrons other nuclear fragments

Question 36

Electromagnetic Radiation includes:

Answer 36

X-ray Gamma rays

Question 37

What wavelength, frequency, & and energy does Radiofrequency Infrared Light Visible Light Ultraviolet Light have

Answer 37

Longer wavelength low frequency low energy

Question 38

What wavelength, frequency, energy does x-ray & gamma ray have

Answer 38

Shorter wavelength high frequency high energy

Question 39

A radiation that occupies the smallest portion of EMR spectrum and the only portion that can be sensed

Answer 39

Visible light

Question 40

It is produced when fast moving electrons interact with high atomic material

Answer 40

X-ray

Question 41

Emitted during isometric transition in radioactive nuclides

Answer 41

Gamma Ray

Question 42

A source of ionizing radiation with 18% radiation acquired by humans

Answer 42

Man-made or Artificial

Question 43

source of ionizing radiation with 82% acquired and their respective percent

Answer 43

Natural or Background External 60% Internal 22%

Question 44

Ionizing of air by x-ray or gamma ray ; divides number of ions formed (State old name & new name)

Answer 44

Exposure (X) Old name: Roentgen New name: Coulomb/kilogram

Question 45

Unit referring to the dose required by patients (Old name & new name)

Answer 45

Absorbed Dose (D) Old name: rad New name: gray

Question 46

Unit used that refers to the dose received by radiation workers. (Old & new name)

Answer 46

Equivalent Dose (H) Old name: rem New: Sievert

Question 47

Time rate of decay of radioactive material (Old & New name)

Answer 47

Activity (A) Old name: Curie New name: Becquerel