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X-RAY DISCOVERY

Total questions: 50

Worksheet time: 8mins

Name
Class
Date
1.

Roentgen won the First Nobel Prize in Physics in

a)

1901

b)

1902

c)

1910

2.

The plate coated with __________________ glowed when Roentgen was experimenting on the cathode-ray tube

a)

fluorescence

b)

barium platinocyanide

c)

cesium iodide

3.

The "X" in X-light is for

a)

No

b)

Strong

c)

Unknown

4.

Large, partially evacuated glass tube

a)

cathode-ray tube

b)

coolidge tube

c)

x-ray tube

5.

Conducted with an x-ray tube located under the examination table

a)

Radiography

b)

Fluoroscopy

c)

Computed Tomography

6.

Uses rotating x-ray source and detector array

a)

Digital Radiography

b)

Computed Tomography

c)

Fluoroscopy

7.

X-ray voltages are measured in

a)

kVp

b)

mEv

c)

kV

8.

milli stands for

a)

1/100

b)

1/1000

c)

1/10000

9.

Long exposure time results in

a)

Image blur

b)

Image noise

c)

Image cut

10.

Intensifying screen

a)

Thomas Edison

b)

Charles Leonard

c)

Michael Pupin

11.

Substitute for glass plate

a)

Cellulose Triacetate

b)

Cellulose Dinucleotide

c)

Cellulose Nitrate

12.

Fluoroscope was developed in year

a)

1898

b)

1895

c)

1899

13.

First x-ray fatality of the U.S

a)

Clarence Dally

b)

Charles Dally

c)

Carl Dally

14.

Dally died in

a)

1903

b)

1905

c)

1904

15.

H.C. Snook introduced the interrupterless transformer in

a)

1906

b)

1907

c)

1908

16.

The interrupterless transformer is also called

a)

Snook Transformer

b)

Autotransformer

c)

Optimus Prime

17.

Charles Leonard

a)

Double emulsion film

b)

Intensifying screen

c)

Fluoroscopy

18.

Boston Dentist that used diaphragm and aluminum filter

a)

Michael Faraday

b)

William Rogers

c)

William Rollins

19.

Roentgen published the first medical x-ray image in

a)

1895

b)

1896

c)

1901

20.

Year when W. Coolidge unveiled his hot cathode-ray tube to the medical community

a)

1911

b)

1912

c)

1913

21.

In which portion of pregnancy is the embryo/fetus most radiosensitive?

a)

1st Trimester

b)

2nd Trimester

c)

3rd Trimester

22.

The following are the guidelines that determine when should we use gonadal shield, except for?

a)

When the patient is of reproductive age

b)

When the gonads are within 10 cm of the collimated primary beam

c)

When clinical objectives permit

23.

How does Filtration affects radiation quality

a)

Decrease

b)

No Change

c)

Increase

24.

How does Filtration affects radiation intensity?

a)

No Change

b)

Decrease

c)

Increase

25.

The total filtration of a general-purpose x-ray is approximately?

a)

2.5 mm Al

b)

1.5 mm Al

c)

2.0 mm Al

26.

Device that is used to restrict x-ray beam size and shape

a)

Collimator

b)

Collimation

c)

Filtration

27.

Most effective type of shield for anterior and lateral male gonadal protection during fluoroscopic and radiographic examination

a)

Contact

b)

Shaped (Contour)

c)

Shadow

28.

The x-ray tube glass envelope and its insulating oil function as what kind of filtration

a)

Total

b)

Inherent

c)

Added

29.

Primary purpose of filtration of the useful x-ray beam

a)

To reduce patient skin dose

b)

To reduce low-energy x-rays

c)

To reduce part of the body to be imaged

30.

Minimum lead requirement or lead aprons, according to the NCRP

a)

1.0 mm Pb equivalent

b)

0.25 mm Pb equivalent

c)

0.50 mm Pb equivalent

31.

Filters used in radiographic x-ray tubes generally are composed of

a)

Lead

b)

Aluminum

c)

Tin

32.

ALARA

a)

As Low As Reasonably Approachable

b)

As Low As Reasonably Achieved

c)

As Low As Reasonably Achievable

33.

The prefix of 1012

a)

Tera-

b)

Giga-

c)

Mega-

34.

The prefix of 10-1

a)

deci-

b)

milli-

c)

centi-

35.

Unit of radiation exposure or intensity

a)

Absorbed Dose

b)

Sievert

c)

Air Kerma

36.

1 Sv is equals to how many rem

a)

10

b)

100

c)

1000

37.

1 Ci is equivalent to

a)

3.6 x 1010 Bq

b)

3.7 x 1010 Bq

c)

3.8 x 1010 Bq

38.

Transfer of heat through a material or by touching

a)

Conduction

b)

Convection

c)

Radiation

39.

Mechanical transfer of “hot” molecules in a gas or liquid from one place to another

a)

Radiation

b)

Conduction

c)

Convection

40.

Transfer of heat energy through space

a)

Radiation

b)

Convection

c)

Conduction

41.

SI unit of acceleration

a)

kg-m/s

b)

m/s

c)

m/s2

42.

Gravity (g) value on Moon

a)

1.6 m/s2

b)

6.3 m/s2

c)

9.8 m/s2

43.

A body will remain at rest or will continue to move with constant velocity in a straight line unless acted on by an external force

a)

Force

b)

Inertia

c)

Action/Reaction

44.

The prefix of 10-15

a)

pico-

b)

femto-

c)

atto-

45.

SI unit of force?

a)

W

b)

J

c)

N

46.

Least familiar form of energy

a)

Electromagnetic Energy

b)

Ultraviolet Energy

c)

Nuclear Energy

47.

Force exerted on the body under the influence of gravity

a)

Mass

b)

Weight

c)

Power

48.

Removal of electron from an atom

a)

Electrification

b)

Ionization

c)

Photodisintegration

49.

NCRP means

a)

Natural Community of Radiation Protection

b)

National Council on Radiation Protection

c)

National Commission on Radiation Protection

50.

Ability to do work

a)

Power

b)

Force

c)

Energy

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