DMI 50A Exam 1 UPDATED ACTUAL
Exam Questions and CORRECT Answers
Given the title of discovering x-rays - CORRECT ANSWER - Wilhelm Conrad Roentgen
When were x-rays discovered? - CORRECT ANSWER - November 8, 1895
Roentgen discovered x-rays with which device? - CORRECT ANSWER - Crookes tube
The phosphor that Roentgen used in early experiments with x-rays is called? - CORRECT
ANSWER - Barium platinocyanide
How are x-ray tube voltages measured? - CORRECT ANSWER - Kilovolt
He discovered the fluoroscope - CORRECT ANSWER - Thomas Edison in 1898
He first applied x-ray beam collimation and filtration in medical imaging? - CORRECT
ANSWER - William Rollins
The type of x-ray tube used today is called... - CORRECT ANSWER - Coolidge tube
The Bucky grid does what? - CORRECT ANSWER - Improves contrast resolution
Who was the first recorded person to die from x-ray exposure? - CORRECT ANSWER -
Clarence Dally
Roentgen originally identified x-rays as what? - CORRECT ANSWER - X-light
, What are the two simple, general types of x-ray imaging procedures? - CORRECT
ANSWER - Radiographic and fluoroscopic
The principal difference between mass and weight - CORRECT ANSWER - Mass =
energy, weight = force exerted by gravity
Energy is defined as what? - CORRECT ANSWER - The ability to do work
The four units used to measure radiation (List both CU and SI equivalents, including symbols) -
CORRECT ANSWER - 1. roentgen (R) - air kerma (Gya)
2. rad (rad) - gray (Gyt)
3. rem (rem) - sievert (Sv)
4. curie (Ci) - becquerel (Bq)
roentgen (R) / air kerma (Gya) relates to what? - CORRECT ANSWER - EXPOSURE -
Ions produced in the air (i.e., energy transfer from photons to electrons during ionization)
rad (rad) / gray (Gyt) relates to what? - CORRECT ANSWER - ABSORBED DOSE -
Radiation absorbed dose in tissue
rem (rem) / sievert (Sv) relates to what? - CORRECT ANSWER - EFFECTIVE DOSE -
Used to express the quantity of radiation received by radiation workers and populations.
curie (Ci) / becquerel (Bq) relates to what? - CORRECT ANSWER - RADIOACTIVITY -
Quantity of radioactive material, not the radiation emitted by that material.
rem (radiation dose equivalent to man) = ? - CORRECT ANSWER - rad x QF (quality
factor)
Exam Questions and CORRECT Answers
Given the title of discovering x-rays - CORRECT ANSWER - Wilhelm Conrad Roentgen
When were x-rays discovered? - CORRECT ANSWER - November 8, 1895
Roentgen discovered x-rays with which device? - CORRECT ANSWER - Crookes tube
The phosphor that Roentgen used in early experiments with x-rays is called? - CORRECT
ANSWER - Barium platinocyanide
How are x-ray tube voltages measured? - CORRECT ANSWER - Kilovolt
He discovered the fluoroscope - CORRECT ANSWER - Thomas Edison in 1898
He first applied x-ray beam collimation and filtration in medical imaging? - CORRECT
ANSWER - William Rollins
The type of x-ray tube used today is called... - CORRECT ANSWER - Coolidge tube
The Bucky grid does what? - CORRECT ANSWER - Improves contrast resolution
Who was the first recorded person to die from x-ray exposure? - CORRECT ANSWER -
Clarence Dally
Roentgen originally identified x-rays as what? - CORRECT ANSWER - X-light
, What are the two simple, general types of x-ray imaging procedures? - CORRECT
ANSWER - Radiographic and fluoroscopic
The principal difference between mass and weight - CORRECT ANSWER - Mass =
energy, weight = force exerted by gravity
Energy is defined as what? - CORRECT ANSWER - The ability to do work
The four units used to measure radiation (List both CU and SI equivalents, including symbols) -
CORRECT ANSWER - 1. roentgen (R) - air kerma (Gya)
2. rad (rad) - gray (Gyt)
3. rem (rem) - sievert (Sv)
4. curie (Ci) - becquerel (Bq)
roentgen (R) / air kerma (Gya) relates to what? - CORRECT ANSWER - EXPOSURE -
Ions produced in the air (i.e., energy transfer from photons to electrons during ionization)
rad (rad) / gray (Gyt) relates to what? - CORRECT ANSWER - ABSORBED DOSE -
Radiation absorbed dose in tissue
rem (rem) / sievert (Sv) relates to what? - CORRECT ANSWER - EFFECTIVE DOSE -
Used to express the quantity of radiation received by radiation workers and populations.
curie (Ci) / becquerel (Bq) relates to what? - CORRECT ANSWER - RADIOACTIVITY -
Quantity of radioactive material, not the radiation emitted by that material.
rem (radiation dose equivalent to man) = ? - CORRECT ANSWER - rad x QF (quality
factor)
