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ARAD1102

C4 & 5 ppt

QuestionAnswer
Roentgen discovered XRs using a crookes tube and paper coated with ___. barium platinocyanide
Excessive occupational exposure for early pioneers resulted in what 3 conditions? I. radiodermatitis II. cancer III. blood disorders
What 2 committes were formed in 1921 to address the increasing number of rad injuries? I. British XR II. Radium Protection
What unit was used from 1900-1930 to measure rad exposure? skin erythema dose
Which unit was accepted as a unit of exposire by the Second International Congress of Radiology in 1928? Roentgen (R)
When was the term effective dose adopted? 1991
total electric charge of one sign per unit mass that XR and GR photons with energies up to 3 million eV generated in dry air at standard temperature and pressure? Exposure (X)
X can be measured in an accredited dosimetry calibration lab by using a standard (free air) ___. ionization chamber
Acronym for kinetic energy released in air/ material, or per unit mass: air kerma
What 2 states can Gy (air kerma) be expresssed in? I. Gya (air) II. Gyt (tissue)
The sum total of air kerma over the exposed area of the pts surface expressed in mGy-cm^2 Dose-area Product (DAP)
responsible for any bio dmg resulting from exposure of the tissues to rad: Absorbed Dose (D)
D depends on what 3 factors? I. atomic number of tissue II. mass density of tissue III. energy of incident photon
Product of the avg D in a tissue or organ and associated with Wr chosen for type and energy of rad in question EqD (Sv/mSv)
Measure of ocerall risk of X to humans from ionrad EfD
Sum of weighted equivalent doses for all irradiated tissues or organs: Effective Dose (EfD)
Equation for EfD: EfD = D x Wr x Wt
Dimensionless factor used for rad protection purposes to account for differences in bio impact among various types of ionrad Radiation Weighting Factor (Wr)
Value that denotes the percentage of summed stochastic risk stemming from irradiation of tissue to all inclusive risk Tissue Weighting Factor (Wt)
Quantity used to describe rad X of a population or group from low doses of different sources of ionrad: Collective EfD
Rad dosimetry quantity that was defined by the NRC to monitor and control human X to ionrad, AKA "the sum of effective dose equivalent from external rad": Total Effective Dose Equivalent (TEDE)
Monitoring of EqD to any person occupationally exposed on a regular basis to ionrad Personnel Dosimetry
Most HC facilities issue dosimetry devices when personnel could receive approximately __% of their occupational EfD limit in any month 1%
Primary personnel dosimeter should be attahed to the clothing on the ___ of the body at ___ level. I. front II. collar
3 most current personnel monitoring devices: I. Optically stimulated luminescence (OSL) II. Direct ion Storage (DIS) III. Thermoluminescent ring (TLD)
When a protective apron is worn, a second dosimeter should be worn ___ the apron at ___ level. I. beneath II. waist
For pregnant diagnostic imaging personnel, a second dosimeter should be worn at ___ level abdominal
A ___ is worn as a second monitor when performing RG procedures that require hands to be near the primary XRB. TLD
The most common type of device issued for measuring occupational exposure (OSL) contains a detector made of ___. aluminum oxide
A small ionization gas filled dosimeter connected to a solid state device with electrically erasable programmable, read-only memory (EEPROM) DIS
3 categories of Radiation Survey Instruments for Area monitoring: I. with readout scale II. without readout scale III. ion-chamber based
Medical physicists use ___ connected to ___ to perform standard measurements required by state, federal, and health accreditation organizations for RG and FS devices I. ion chambers II. electrometers
Created by: lipscombsomi
 

 



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