Rad 1 5/20 test

Question 1

Cells that are MOST sensitive to ionizing radiation are rapidly dividing cells. These cells include:

Answer 1

Growth, gonadal, neoplastic and metabolically active cells.

Question 2

Other cells that are affected by ionizing radiation are:

Answer 2

Bone, lymphatics, dermis and blood forming cells.

Question 3

Damage done to the body that shows later in life is called?

Answer 3

Somatic damage

Question 4

Signs of somatic damage include?

Answer 4

Cancer, cataracts, aplastic anemia and sterility

Question 5

Damage or injury that occurs to the genes of the individual is called?

Answer 5

Genetic damage

Question 6

1 Gy=?

Answer 6

100 rad (radiation absorbed dose)

Question 7

Safe operating procedures include?

Answer 7

Technique charts, positioning aids, PPE, dosimeter, emergency plan, quality control

Question 8

Single exposure to what is lethal in humans?

Answer 8

300 rad or 3 Gy

Question 9

What does MPD stand for?

Answer 9

Maximum Permissible Dose

Question 10

What does ALARA stand for?

Answer 10

As Low As Reasonably Achievable

Question 11

What is the name of the committee/ council that sets standards for radiation safety?

Answer 11

NCRP

Question 12

What is the quantity of energy given off to matter?

Answer 12

Absorbed dose

Question 13

What is the unit for absorbed dose?

Answer 13

Gy (gray)

Question 14

What is the quantity of radiation per unit of mass taking into consideration the biologic effect on specific tissue types?

Answer 14

Dose equivalent

Question 15

What is the unit for dose equivalent?

Answer 15

Sv

Question 16

What were Sv’s previously called?

Answer 16

Rem (Roengten equivalent man)

Question 17

What is the MPD per year for non-occupational individuals?

Answer 17

0.005Sv every year

Question 18

What is the MPD per year for occupational individuals?

Answer 18

0.05Sv every year

Question 19

Personal radiation moniotoring device that should be worn at all times is called?

Answer 19

Dosimeter

Question 20

What type of dosimeter is most common?

Answer 20

Film badge

Question 21

What do Thermoluminescent Dosimeters contain?

Answer 21

Calcium fluoride and lithium fluoride

Question 22

When TLD’s are heated they emit?

Answer 22

Light that is proportional to radiation exposure/ absorbed dose

Question 23

Secondary radiation is also known as?

Answer 23

Scatter

Question 24

What is the thickness of lead found in radiology PPE?

Answer 24

0.5mm

Question 25

What is used to reduce the amount of scatter radiation?

Answer 25

Collimator

Question 26

What 3 things are required when taking radiographs?

Answer 26

Decreased exposure time, increased distance from patient, and increased shielding

Question 27

How should aprons be hung when not in use?

Answer 27

Hung vertical over a rounded surface.

Question 28

How should gloves be stored when not in use?

Answer 28

Should be hung on vertical holders

Question 29

How often is the PPE inspected manually?

Answer 29

At least quarterly

Question 30

How often is PPE inspected radiographically

Answer 30

Anually

Question 31

What color are the cracks on PPE when radiographed?

Answer 31

Black

Question 32

Which trimester of pregnancy is at most risk?

Answer 32

First

Question 33

What generations do genetic damage most often effect?

Answer 33

2nd or 3rd

Question 34

What are some symtoms of radiation poisoning?

Answer 34

GI, flu-like symptoms

Question 35

How can you decrease patient exposure?

Answer 35

Avoid retakes, use collimation and use gonad shield

Question 36

1Sv=?

Answer 36

100Rem

Question 37

How often are film badges sent in for evaluation?

Answer 37

Monthly

Question 38

Where should dosimeters be kept at all times during radiography?

Answer 38

Collar level

Question 39

What will increase as the kVp increases?

Answer 39

Scatter

Question 40

What does Absorbed Dose mean?

Answer 40

The quantity of energy imparted by ionizing radiations to matter.

Question 41

What does Dose Equivalent mean?

Answer 41

The quantity obtained by multiplying the absorbed dose in tissue by the quality factor.

Question 42

What does Dosimeter mean?

Answer 42

A device used to measure radiation exposure to personnel.

Question 43

What does dosimetry mean?

Answer 43

Various methods used to measure radiation exposure to personnel.

Question 44

What is a Film Badge?

Answer 44

A method of dosimetry consisting of a plastic holder with a radiation-sensitive film in a lightproof package.

Question 45

What is Fluoroscopy?

Answer 45

A special radiographic diagnostic method in which a "live view" of the internal anatomy is possible.

Question 46

What is Genetic Damage?

Answer 46

Effects of radiation that occur to the genes of reproductive cells.

Question 47

What is Gray(Gy)?

Answer 47

The unit of absorbed dose imparted by ionizing radiations to matter (1 gray equals 100 rad).

Question 48

What does Hemopoietic mean?

Answer 48

Anatomic areas where red blood cells are produced.

Question 49

What does Leukopoietic mean?

Answer 49

Anatomic areas where white blood cells are produced.

Question 50

What does MPD mean?

Answer 50

The maximum dose of radiation a person may receive in a given time period.

Question 51

What is a Pocket Ionization Chamber?

Answer 51

A method of dosimetry consisting of a charged ion chamber and electrometer which can be read immediately to determine amount of exposure.

Question 52

What is a Primary beam?

Answer 52

The path that the x-rays follow as they leave the tube.

Question 53

What is Secondary Radiation?

Answer 53

Commonly called "scatter radiation", it is caused by interaction of the primary beam with objects in its path.

Question 54

What is a Sievert (Sv)?

Answer 54

The dose of radiation equivalent to the absorbed dose in tissue (1Sv equals 100 rem)

Question 55

What is Somatic Damage?

Answer 55

Damage to the body induced by radiation that becomes manifest within the lifetime of the recipient.

Question 56

What is a Thermoluminescent Dosimeter (TLD)?

Answer 56

A method of dosmetry consisting of a chamber containing special compounds that become electrically altered by ionizing radiation.