Radiation Protection In Medical Radiography, Chapter
4 - Questions With Thorough Solutions
Who discovered x-rays? Correct Answer - Wilhelm Conrad Roentgen
What year were x-rays discovered? Correct Answer - 1895
How were x-rays discovered? Correct Answer - Roentgen was
investigating the nature of cathode rays and fluorescent materials. Passed
electricity through a Crookes tube that was covered with a shield of black
cardboard. He observed light coming from the paper coated with barium
platinocyanide. Found out x-rays could expose photographic film.
What was the first radiograph taken? Correct Answer - Roentgen's wife's
hand
What year were the first cases of radiation induced damages noted? Correct
Answer - 1896
Year of first death related to radiation induced injuries? Correct Answer -
1904
Who was the first death related to radiation induced cancer?
What type of cancer killed him? (Somatic (body) damage) Correct Answer -
Clarence Dailey
Leukemia
Types of occupational Exposure Correct Answer - Radiodermatitis
Many turned cancerous
Skin Radiodermatitis Correct Answer - First occupational notes -
reddening of the skin
Blood disorders Correct Answer - Aplastic Anemia
Leukemia
Leukemia Correct Answer - Abnormal overproduction of white blood cells
, Aplastic Anemia Correct Answer - Results from bone marrow failure
What made early radiography pioneers investigate radiation protection
measures? Correct Answer - Early radiation injuries such as
radiodermatitis
Early Deterministic Somatic Effects Correct Answer - -Nausea
-Fatigue
-Diffuse redness of the skin
-Loss of hair
-Intestinal disorders
-Shedding outer layer of skin
Late Deterministic Somatic Effects Correct Answer - -Cataract formation
-Fibrosis
-Organ atrophy
-Loss of parenchymal cells
-Reduced fertility
-Sterility
Late Stochastic Effects Correct Answer - -Cancer
-Genetic (hereditary) effects
Skin Erythema Dose Correct Answer - -1900-1930
-unit in use for measuring radiation exposure
-the received quantity of radiation that causes diffuse redness over an area of
skin after irradiation.
Year roentgen was accepted unit of exposure without a great definition?
Correct Answer - 1928
What were used to measure for radiation dose in the early years? Correct
Answer - Short-term effects (acute or early effects)
Level of radiation accepted to be the level with which exposure did not cause
apparent harmful side effects? Correct Answer - Tolerance Level; NOW
called threshold dose
4 - Questions With Thorough Solutions
Who discovered x-rays? Correct Answer - Wilhelm Conrad Roentgen
What year were x-rays discovered? Correct Answer - 1895
How were x-rays discovered? Correct Answer - Roentgen was
investigating the nature of cathode rays and fluorescent materials. Passed
electricity through a Crookes tube that was covered with a shield of black
cardboard. He observed light coming from the paper coated with barium
platinocyanide. Found out x-rays could expose photographic film.
What was the first radiograph taken? Correct Answer - Roentgen's wife's
hand
What year were the first cases of radiation induced damages noted? Correct
Answer - 1896
Year of first death related to radiation induced injuries? Correct Answer -
1904
Who was the first death related to radiation induced cancer?
What type of cancer killed him? (Somatic (body) damage) Correct Answer -
Clarence Dailey
Leukemia
Types of occupational Exposure Correct Answer - Radiodermatitis
Many turned cancerous
Skin Radiodermatitis Correct Answer - First occupational notes -
reddening of the skin
Blood disorders Correct Answer - Aplastic Anemia
Leukemia
Leukemia Correct Answer - Abnormal overproduction of white blood cells
, Aplastic Anemia Correct Answer - Results from bone marrow failure
What made early radiography pioneers investigate radiation protection
measures? Correct Answer - Early radiation injuries such as
radiodermatitis
Early Deterministic Somatic Effects Correct Answer - -Nausea
-Fatigue
-Diffuse redness of the skin
-Loss of hair
-Intestinal disorders
-Shedding outer layer of skin
Late Deterministic Somatic Effects Correct Answer - -Cataract formation
-Fibrosis
-Organ atrophy
-Loss of parenchymal cells
-Reduced fertility
-Sterility
Late Stochastic Effects Correct Answer - -Cancer
-Genetic (hereditary) effects
Skin Erythema Dose Correct Answer - -1900-1930
-unit in use for measuring radiation exposure
-the received quantity of radiation that causes diffuse redness over an area of
skin after irradiation.
Year roentgen was accepted unit of exposure without a great definition?
Correct Answer - 1928
What were used to measure for radiation dose in the early years? Correct
Answer - Short-term effects (acute or early effects)
Level of radiation accepted to be the level with which exposure did not cause
apparent harmful side effects? Correct Answer - Tolerance Level; NOW
called threshold dose
