Flashcards in CH.2 Deck (35):
____ refers to kinetic energy that passes from one location to another and can have many manifestations.
The electromagnetic spectrum can be divided into two parts:
The following radiations are classified and ionizing radiations:
2. Gamma rays
3. Ultraviolet (High-energy)
The following radiations are classified and non-ionizing radiations:
1. Visible light
2. Infrared rays
4. Radio waves
5. Ultraviolet (Low-energy)
basis of interactions of x-rays with human tissues
insufficient kinetic energy to eject an electron from an atom
high enough frequency to transfer sufficient energy to some orbital electrons to remove them from their atom
Another term for weighting factors?
X-rays/Beta particles/Gamma photons have a weighting factor of:
Alpha particles have a weighting factor of:
The number of protons in the nucleus of an atom constitutes its ____
atomic number aka "Z" number
The ___ ___ identifies an element and determines its placement in the periodic table of elements.
radiation quantity used for radiation protection purposes when a person receives exposure from various types of ionizing radiation
manufactured quantity that takes into account the dose for all types of ionizing radiation to various irritated organ or tissues in the human body
what is the most damaging radiation to tissues:
alpha (more damaging as a source of internal radiation);
(harmless as an external source of radiation)
this particle has more penetration but causes less damage along the way
This form of radiation can travel through space in
the form of a wave but can interact with matter as
a particle of energy
The amount of energy transferred to electrons by
ionizing radiation is the basis of the concept of:
ejecting electrons from the atoms composing the tissues results in molecular change this is called:
leading to abnormal cell function or even entire loss of cell function is called:
What kind of changes can cellular damage cause?
genetic or somatic changes such as:
Total annual dose for natural types of radiation?
Total annual dose for medical imaging?
Total annual EqD from all sources?
results from negligible exposure to ionizing radiation this is called:
What are the two sources of ionizing radiation?
Natural and manmade
How much radiation can air travel give to us?
EqD rate of 0.005 to 0.01 mSv/hour
Name the 4 types of particulate radiation?
1. Alpha particles
2. Beta particles
Ionizing radiation is what causes:
Which body part when imaged has the highest fetal dose and lowest entrance skin exposure?
Lumbar spine (AP)
Occupation and nonoccupational dose limits are expressed as?
EfD (effective dose)
____ cancer continues to be the main adverse health effect of the 1986 Chernobyl nuclear power plant accident