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HESI RADIOGRAPHY EXAM 2025 UPDATED
ACTUAL EXAM WITH CORRECT SOLUTIONS.
Who discovered x-rays? - correct answer- Wilhelm Konrad
Roentgen
What are 9 characteristics of x-rays? - correct answer- 1. the
ability to penetrate opaque substances
2. the ability to affect silver halide salts on films in the same
manner as light does
3. the ability to stimulate or destroy tissue by ionization
4. they travel at a constant speed, the speed of light
5. they cause fluorescence
6. they are high energy waves
7. they travel as electromagnetic waves or energy
8. they have no mass
9. they travel in a straight line and are invisible
What is ionization? - correct answer- The production of ions by
the removal of electrons from the atoms of the matter that is
struck by the x-rays
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When does ionization occur? - correct answer- whenever x-
rays penetrate matter
What is an electric current? - correct answer- the flow of
electrons from one point to another or through a conductor
What is an electric current measured in? - correct answer-
amperes
What is a direct current? - correct answer- current flowing in
one direction, that is, from positive and negative. Direct current
can be interrupted at certain set intervals
What is kilovoltage usually designated as? - correct answer-
Kilovoltage peak (kVp)
What is kilovoltage? - correct answer- the measure of the force
between the negative cathode and the positive anode and
controls the energy of the electrons striking the tungsten target.
HESI RADIOGRAPHY EXAM 2025 UPDATED
ACTUAL EXAM WITH CORRECT SOLUTIONS.
Who discovered x-rays? - correct answer- Wilhelm Konrad
Roentgen
What are 9 characteristics of x-rays? - correct answer- 1. the
ability to penetrate opaque substances
2. the ability to affect silver halide salts on films in the same
manner as light does
3. the ability to stimulate or destroy tissue by ionization
4. they travel at a constant speed, the speed of light
5. they cause fluorescence
6. they are high energy waves
7. they travel as electromagnetic waves or energy
8. they have no mass
9. they travel in a straight line and are invisible
What is ionization? - correct answer- The production of ions by
the removal of electrons from the atoms of the matter that is
struck by the x-rays
, 2 | Page
When does ionization occur? - correct answer- whenever x-
rays penetrate matter
What is an electric current? - correct answer- the flow of
electrons from one point to another or through a conductor
What is an electric current measured in? - correct answer-
amperes
What is a direct current? - correct answer- current flowing in
one direction, that is, from positive and negative. Direct current
can be interrupted at certain set intervals
What is kilovoltage usually designated as? - correct answer-
Kilovoltage peak (kVp)
What is kilovoltage? - correct answer- the measure of the force
between the negative cathode and the positive anode and
controls the energy of the electrons striking the tungsten target.
