radbio Flashcards

1
Q

study of the effect of ionizing radiation on living organisms (physics & biology)

A

radiobiology

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2
Q

special type of radiation that includes x-rays

A

ionizing radiation

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3
Q

Any type of radiation that is capable of removing an orbital electron from atom with which it interacts

A

ionizing radiation

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4
Q

different types of ionizing radiation

A

alpha particle
beta
neutron
gamma
xray

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4
Q

removal of electron from atom

A

ionization

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5
Q

particulate form of ionizing radiation that consists of two protons and two neutrons

A

alpha particle

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6
Q

fast moving particles with negative electrical charge that are emitted from an atom’s nucleus during radioactive decay

A

beta

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7
Q

usually emitted as a result of spontaneous or induced nuclear fission

A

neutron

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7
Q

emission of an high-energy wave from nucleus of atom

A

gamma

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8
Q

emission of a high-energy wave from electron cloud of atom

A

xray

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8
Q

All of their energy is absorbed inside the body, potentially causing damage to the cells

A

alpha

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9
Q

travel farther in air than alpha particles, but can be stopped by a layer of clothing or by thin layer of substance

A

beta

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10
Q

able to travel hundreds or even thousands of meters in air, they are however able to be effectively stopped if blocked by hydrogen-rich material

A

neutron

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11
Q

unlike alpha or beta, does not consist of any particles, instead consisting of photon of energy being emitted from an unstable nucleus

A

gamma

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12
Q

Generally caused by energy changes in an electron such as moving from higher energy level to a lower one, causing the excess energy to be released

A

xray

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13
Q

2 sources of ionizing radiation

A
  1. natural environmental radiation
  2. man-made radiation
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14
Q

largest source of natural radiation

A

radon

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15
Q

largest source of man made radiation

A

diagnostic x-ray

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16
Q

annual dose of natural radiation

A

3 mSv

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17
Q

annual dose of man-made radiation

A

3.2 mSv

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18
Q

Radioactive gas that is produced by natural radioactive decay of uranium, which is present in trace quantities in Earth

A

radon

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19
Q

7 regions of electromagnetic spectrum

A

radiowave/radiofrequency
microwave
infrared
visible light
ultraviolet radiation
x-rays
gamma rays

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20
Q

longest wavelength with low energy

A

radiowave/radiofrequency

20
Q

wavelength of radiowave

A

between 1 mm & 100 km

21
frequency of radiowave
300 GHz to kHz
22
short wavelength , higher radiofrequency
microwave
23
radiant heat
infrared
24
Radioactive gas that is produced by natural radioactive decay of uranium, which is present in trace quantities in Earth
infrared
25
cause of may peculiar but familiar phenomena, such as rainbow or apparent bending of straw in glass water
refraction
25
located between visible light and ionizing radiation; responsible with molecular interactions
ultraviolet radiation
26
shortest wavelength above all
gamma rays
27
2 mode of human exposure to radiation
internal external
28
when ionizing radiation is located inside organism/human body
internal
29
located outside the body, can be from environment
external
30
2 radiation effect
deterministic effect stochastic effect
31
deterministic effect is also called as
non-stochastic effect or early effect
32
ARS
acute radiation syndrome
33
destruction of blood forming cells (hematopoietic cells)
hematologic syndrom
33
fist symptom of gastrointestinal syndrome
nausea, loss of appetite, electrolyte imbalance (COMMON IN RT)
34
central nervous system syndrome
dizziness, confusion double vision, seizure, loss of consciousness
35
local tissue damage
skin (erythema) gonads (infertility) Exterminates cytogenetic dame
36
fatigue, shortness of breathing, pale skin
hematologic depression
37
stochastic effect
late effect
38
effects of fetal irradiation (5) death of fetus before born
prenatal death
39
death of new born within first 25/28? days of life
neonatal death
40
cancer diseases that diagnose in children
childhood malignancy
40
born defects; structural or functional abnormalities present at birth
congenital malformation
40
children ca result various factors including nutritional deficiency, chronic illness, genetic condition, environmental influence
diminished growth and development
41
unit for exposure
roentgen (R)
42
SI unit of roentgen
coulomb/kg of air
42
SI unit of rad
gray
43
unit for radioactivity
curie
43
fundamental quantity for describing the effects of radiation in tissue/organ sa people
rad
43
SI unit for rem
sievert
44
sources of medical radiation exposure
1. diagnostic xray 2. dental radiography 3. cardiovascular interventional radiology 4. nuclear medicing 5. radiation oncolog
45