LRA 110 FINAL EXAM QUESTIONS AND ANSWERS
Who discovered x-rays? - (answer)Dr.Willhelm Conrd Roentgen
When was Dr.Roentgen born? - (answer)March 27, 1845 in Germany
When were x-rays discovered? - (answer)November8, 1895
When was the 1st Radiograph produced? - (answer)December 22, 1895
What is Acute Radiodermatitis? - (answer)Radiation Burns
Who brought concern to the dangers of X-ray? - (answer)Thomas Edison
Thomas Edison suffered from what kind of injuries because of X-ray? - (answer)A radiation burn to the
face & injury to the left eye
Who suffered severe radiation burns from Edisons experimentations? - (answer)His assistant (Clarence
Dally)
What was the treatment back then for Radiation Burn injuries? - (answer)Back then it was amputation
What was an indicator of the profession? - (answer)Amputations and gloved hands
What are the units of measure in the quantities pyramid? - (answer)Fundamental quantities
Driven quantities
Special quantities
What do the fundamental quantities describe? - (answer)Mass, Length, and Time
, LRA 110 FINAL EXAM QUESTIONS AND ANSWERS
What do derived quantities describe? - (answer)Velocity, Acceleration, Force, Momentum, Work, and
Power
What do Special (Radiologic) quantities describe? - (answer)Dose, dose equivalent, exposure, and
radioactivity
All radiation measurements fall into how many categories? And what are they ? - (answer)2 categories
-Radiation in air
-Radiation in tissue
Radiation in air is measured by? - (answer)exposure and air kerma
Radiation in tissue is measured by? - (answer)Absorbed does, Equivalent dose, effective dose
Define: Ionization? - (answer)A type of radiation that has enough energy to remove tightly bound
electrons from atoms
What are the units of measure in the British system? - (answer)Pound: used to measure mass
Foot: used to measure length
Second: used to measure time
What are the units of measure in the System International system(SI)? - (answer)Kilogram: used to
measure mass
Meter: used to measure length
Second: used to measure time
What is the unit in the SI system that represents Roentgen (R)? - (answer)Coulomb/kilogram (C/kg)
What is the unit in the SI system that represents Radiation Absorbed Dose(rad)? - (answer)Gray (Gy)
Who discovered x-rays? - (answer)Dr.Willhelm Conrd Roentgen
When was Dr.Roentgen born? - (answer)March 27, 1845 in Germany
When were x-rays discovered? - (answer)November8, 1895
When was the 1st Radiograph produced? - (answer)December 22, 1895
What is Acute Radiodermatitis? - (answer)Radiation Burns
Who brought concern to the dangers of X-ray? - (answer)Thomas Edison
Thomas Edison suffered from what kind of injuries because of X-ray? - (answer)A radiation burn to the
face & injury to the left eye
Who suffered severe radiation burns from Edisons experimentations? - (answer)His assistant (Clarence
Dally)
What was the treatment back then for Radiation Burn injuries? - (answer)Back then it was amputation
What was an indicator of the profession? - (answer)Amputations and gloved hands
What are the units of measure in the quantities pyramid? - (answer)Fundamental quantities
Driven quantities
Special quantities
What do the fundamental quantities describe? - (answer)Mass, Length, and Time
, LRA 110 FINAL EXAM QUESTIONS AND ANSWERS
What do derived quantities describe? - (answer)Velocity, Acceleration, Force, Momentum, Work, and
Power
What do Special (Radiologic) quantities describe? - (answer)Dose, dose equivalent, exposure, and
radioactivity
All radiation measurements fall into how many categories? And what are they ? - (answer)2 categories
-Radiation in air
-Radiation in tissue
Radiation in air is measured by? - (answer)exposure and air kerma
Radiation in tissue is measured by? - (answer)Absorbed does, Equivalent dose, effective dose
Define: Ionization? - (answer)A type of radiation that has enough energy to remove tightly bound
electrons from atoms
What are the units of measure in the British system? - (answer)Pound: used to measure mass
Foot: used to measure length
Second: used to measure time
What are the units of measure in the System International system(SI)? - (answer)Kilogram: used to
measure mass
Meter: used to measure length
Second: used to measure time
What is the unit in the SI system that represents Roentgen (R)? - (answer)Coulomb/kilogram (C/kg)
What is the unit in the SI system that represents Radiation Absorbed Dose(rad)? - (answer)Gray (Gy)
