Quizzes For 11/18 Flashcards
Gray (Gy)
Replaces RAD
Coulombs per Kg (C/kg)
Replaces roentgen
Sievert (Sv)
Replaces REM
Exposure
Measurement of ionization in air produced by X-rays or gamma rays
Absorbed dose
The amount of energy deposited in any form of matter by any type of radiation
One gray=
1 joule
Dose equivalent
Used to compare biological effects of various types of radiation
MPD in rems equation:
5(N-18)
N=age
18-have to be 18 to take radiographs
Latent period depends on:
Interval
Dose
Sensitivity of tissue
Reproductive cells limit from conception to 30
10 roentgens
Avg background radiation
100 mR/yr
Total body exposure if radiograph is ______ of the facial exposure.
1/10000
Filtration if operating less than 70 kVp
2mm
More than 70kVp
2.5 mm
Cathode
Negative side, electron origin