Math and Terminology for Radiography Flashcards
What is the unit for the Air Kerma?
Joules/kilogram
J/Kg
Gy(a)
What does the Sv measure?
Radiation received by radiation
workers
Occupational exposure
What does the Bq measure?
The amount of ‘activity’ within a
radionuclide.
Thousand
Kilo
Thousand
Milli
Tenth
Deci
10^-1
d
Billionth
Micro
10^-6
U
Hundredth
Centi
10^-2
c
Name three ways a division problem
can be written.
Fraction
Ratio
Decimal
Set up as a traditional division
problem
What is the first operation you need
to complete before you can add or
subtract fractions?
common denominator
What is the common
denominator for 12…6…8…16?
48
What is the first operation you must
complete before you can divide
fractions?
Reciprocate the second fraction
(denominator)
What is the rule for changing a
fraction to a decimal?
You divide the denominator into the
numerator
You divide the lower number into the
upper number
What is the rule for changing
percentages to decimals?
Divide the percentage by 100
Move the decimal two places to the
left
What is a ratio?
Defines a relationship between two
numbers
Special types of fraction
What is a proportion?
The relationship of one ratio to
another
Type of algebraic formula
What does the Gya measure?
Measures number of ions in the air
X-ray machine output
Radiation exposure
Radiation intensity
What does the Gray measure?
Radiation Absorbed Dose
What is the Gyt used to measure?
Experimental dose of radiation or
radiation absorbed by a patient
What is/are the units for absorbed
dose?
Gy
Gy(t)
What is the difference between
the Gyt and Sv as units of
measure for radiation?
The Gyt is the absorbed tissue
dose and Sv is effective dose
for occupational monitoring.
