DI Quiz I

Question 1

The Physicist that discovered X-rays and won the Nobel prize for his work.

Answer 1

Wilhelm Conrad Roentgen

Question 2

X-rays are ___% man-made and ___% produced in nature.

Answer 2

1. 18%

2. 82%

Question 3

X-rays are used in…

Answer 3

1. Security
2. Medical Imaging
3. Quality Assurance

Question 4

X-rays are a type of ________ Radiation and are a product of _____ interactions.

Answer 4

1. Electromagnetic

2. Electron

Question 5

What is the most dangerous aspect of an X-ray?

Answer 5

Ionization that is invisible and cannot be felt.

Question 6

The amount of energy is _____ proportional to the wavelength.

Answer 6

Inversely

Question 7

The basic unit of an X-ray.

Answer 7

Electron Volt (eV)

Question 8

Electromagnetic radiation that is > than ___ eV can produce ionization in living cells.

Answer 8

15 eV

Question 9

Ionization of DNA may lead to …

Answer 9

1. Increased rate of mutation
2. Increased Rate of abortion or fetal abnormalities
3. Increased Susceptibility of disease
4. Increased Risk of cancer
5. Increased Risk of cataracts

Question 10

The primary objective of Radiation Safety is to…

Answer 10

obtain maximum diagnostic information with the minimum exposure of the patient, radiology personnel and the general public.

Question 11

What does ALARA stand for?

Answer 11

As Low As Reasonably Achievable

Question 12

Roentgen

Answer 12

Unit of exposure

Question 13

Rad/Gray

Answer 13

Unit of absorbed dose

Question 14

Rem/Sievert

Answer 14

Unit of dose equivalent

1Rem = 1000mRem

Question 15

Average amount of mRem a person receives in 1 year.

Answer 15

360 mRem

Question 16

True or False: Lead protective gear protects you from both the primary and secondary beams.

Answer 16

False: lead only protects you from scatter radiation

Question 17

Electrons are produced in the ______ and the X-ray is produced from the _____.

Answer 17

1. Cathode (-)

2. Anode (+)

Question 18

Electron current is measured in ____.

Answer 18

Milliamperes (mA)

Question 19

The filament is commonly made of _____.

Answer 19

Tungsten

Question 20

The Anode is commonly made of ____.

Answer 20

Tungsten

Question 21

The energy of the x-rays produced at the anode is a function of how ____ the electrons strike.

Answer 21

Fast

Question 22

X-rays form by …

Answer 22

Colliding electrons with target atoms.

Question 23

Bremsstrahlung

Answer 23

Radiative interactions are the main source of diagnostic x-rays
Slowing or breaking of the electron as it passes by the atom allows it to release energy in the form of x-rays