Block 1 Review Flashcards
Non ionizing radiation doesnt….
Have enough energy to move electrons, example: microwave
Example of written directive versus not.
Written- therapies
Not- tc99m tests
4 types of ionizing radiation
Alpha
Beta
Gamma
X rays
33 energy
Natural vs man made radiation
Natural- radon, potassium
Man made- TV, smoke detector
Characteristic xray
Emitted from heavy elements when their electrons make transitions from a higher energy level to a lower one
Bremsstrahlung x-rays
Emitted when an accelerated electron is decelerated when they are fired at a metal target
Four federal agencies
NRC, FDA, DOT, EPA
TJC The joint commission is over,
Standards for safety
Dose rate formula
D2= D1 (d1^2/d2^2)
NRC
Title 10 cfr
Powerplants and medical facilities
10 CFR 20
Dose limits
DOT
Regulates packaging and transport of hazardous material
49 car parts 171-178
Remember TDS
Time distance shielding
FDA
Regulates design and production of radiation emitting devices
Title 21 cfr
Leak tests are done every
6 months
49 cfr is
Transportation
EPA
Disposal of radioactivity
Title 40 cfr
FDA
Manufacturing and approval of drugs, etc
Rad area labeling:
Dose rate >5rem 1 hr radiation area
Dose rate >100rem 1 hr high Rad area
Dose rate >500rem 1 hr very high Rad area
Area where concentrations could exceed DAC, derived air concentration something
Three types of licenses
General
Specific license of limited scope
Specific license of broad scope
10 cfr 19
General worker training
10 cfr 35
Licensing byproduct
10 cfr 32
Licensing distribution
Our measurements are in
J, and eV
Examples of different licenses
General- smoke detector
Broad- medical- ABC
Limited- under license
Unrestricted area
2mrem/hr
Written directives contain
Date and signature
Patient name
Radiopharm
Dosage
Route of admin
TEDE
TODE
DDE
SDE
LDE
Total effective dose equivalent
Total organ dose equivalent
Deep dose equivalent
Shallow dose equivalent
Lens eye dose equivalent
Type of electromagnetic radiation that is created when the nucleus de-excites as opposed to the atom de-exciting
Gamma rays
Radiation emission that competed with gamma ray emissions for an excited nucleus
Conversion electron emission
Occupational dose limits
TEDE <5REM
TODE <50REM
LED <15REM
SDE <50 REM
DDE+ Internal dose to fetus
<0.5 rem 0.005 Sv
Move decimal 2 to left for rem to Sv
ALI
Annual limit on intake is a derived limit for the amount of radioactive material taken into the body of an adult worker by inhalation, etc
DAC
Derived air concentration means the concentration of a given radionuclide in air
Dose for a min exposure
0.17 mrem
Dose for a 2 min exposure
0.33 mrem
Pregnancy workers are allowed ___rem additional after declaration
50
Amount of tc99m that requires a license to post a work area/room sign bearing Caution, Radioactive material? 10 cfr 20
Tc99m > 10mCi
A person is considered a radiation work if their whole body dose will exceed
100 mrem
10 cfr part 20
Basic radiation protection for workers
Who is responsible for preparing written directives
Authorized user
If you fail a leak test, report within
5 days
A radionuclide that is a pure beta emitter is best suited for what type of radiation in nuclear medicine
Therapeutic studies
Alpha radiation
Positively charged particle consisting of two protons and two neutrons
Beta radiation
High energy electrons, carrying a negative charge
Positron radiation
Positive electron
Gamma radiation
Higher energy photons, the most energetic
X rays
A relatively high energy photon
Which of the following is not true regarding electromagnetic radiation
Has mass proportional to wavelength
Which type of electromagnetic radiation is produces when high energy electrons slam into a z target material
Bremmstrahlaung xrays
Which type of electromagnetic radiation will be created whenever positions are present
Annihilation photons 511 kev
