CHAPTER 1 Flashcards
what is ALARA?
As low as reasonable achievable
what is medical radiation used for in science?
to create images of the human body
some energies create ____ in human tissue.
Ionization
As wavelength decreases, frequency is …?
frequency increases
As energy increases frequency…?
increases as well
wavelength and frequency is …?
irreversible proportioned
Energy and frequency is …?
opposite proportioned
what is the scientific notation for speed of light?
3x10^8
sound exposes…?
medical sonography
Heat exposes …?
thermography
Electromagnetic exposes…?
• x-rays
• radio waves
magnetic exposes…?
Magnetic Resonance Imaging (MRI)
Nuclear exposes …?
Gamma Radiation
Electrical exposes …?
• Electrocardiography
• Radio waves
Nuclear causes what?
Ionization
what is Ionization?
The application or removal of an electron from an atom
X-rays absorb differently in …?
Less dense and more dense organs
Each organ has different ___ ___ which absorbs x-rays differently
Atomic Number
Bones have the highest ___ which makes the x-ray more visible
Atomic Number
MRI doesn’t do what?
doesn’t create Ionizations
Sonography doesn’t do what?
Does not create ionization
What can contrast do?
Enhance the image to see organs better
MRI is loud so what is provided to patients?
Ear protection (ear plugs)
When claustrophobic occurs what is a solution option?
Oral Sedative
