©THESTAR 2024/2025 ALL RIGHTS RESERVED 11:09PM. A+
Radiation Protection Chapter 4 Exam
Questions With Correct Answers 100%
Verified.
Who discovered x-rays? - Answer✔Wilhelm Conrad Roentgen
What year were x-rays discovered? - Answer✔1895
How were x-rays discovered? - 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? - Answer✔Roentgen's wife's hand
What year were the first cases of radiation induced damages noted? - Answer✔1896
Year of first death related to radiation induced injuries? - Answer✔1904
Who was the first death related to radiation induced cancer?
What type of cancer killed him? (Somatic (body) damage) - Answer✔Clarence Dailey
Leukemia
Types of occupational Exposure - Answer✔Radiodermatitis
Many turned cancerous
Skin Radiodermatitis - Answer✔First occupational notes - reddening of the skin
Blood disorders - Answer✔Aplastic Anemia
Leukemia
Leukemia - Answer✔Abnormal overproduction of white blood cells
Aplastic Anemia - Answer✔Results from bone marrow failure
1
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 11:09PM. A+
What made early radiography pioneers investigate radiation protection measures? -
Answer✔Early radiation injuries such as radiodermatitis
Early Deterministic Somatic Effects - Answer✔-Nausea
-Fatigue
-Diffuse redness of the skin
-Loss of hair
-Intestinal disorders
-Shedding outer layer of skin
Late Deterministic Somatic Effects - Answer✔-Cataract formation
-Fibrosis
-Organ atrophy
-Loss of parenchymal cells
-Reduced fertility
-Sterility
Late Stochastic Effects - Answer✔-Cancer
-Genetic (hereditary) effects
Skin Erythema Dose - 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? - Answer✔1928
What were used to measure for radiation dose in the early years? - 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? - Answer✔Tolerance Level; NOW called threshold dose
A radiation dose to which occupationally exposed persons could be continuously subjected
without any apparent harmful acute effects, such as erythema of the skin? - Answer✔Tolerance
dose
2
Radiation Protection Chapter 4 Exam
Questions With Correct Answers 100%
Verified.
Who discovered x-rays? - Answer✔Wilhelm Conrad Roentgen
What year were x-rays discovered? - Answer✔1895
How were x-rays discovered? - 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? - Answer✔Roentgen's wife's hand
What year were the first cases of radiation induced damages noted? - Answer✔1896
Year of first death related to radiation induced injuries? - Answer✔1904
Who was the first death related to radiation induced cancer?
What type of cancer killed him? (Somatic (body) damage) - Answer✔Clarence Dailey
Leukemia
Types of occupational Exposure - Answer✔Radiodermatitis
Many turned cancerous
Skin Radiodermatitis - Answer✔First occupational notes - reddening of the skin
Blood disorders - Answer✔Aplastic Anemia
Leukemia
Leukemia - Answer✔Abnormal overproduction of white blood cells
Aplastic Anemia - Answer✔Results from bone marrow failure
1
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 11:09PM. A+
What made early radiography pioneers investigate radiation protection measures? -
Answer✔Early radiation injuries such as radiodermatitis
Early Deterministic Somatic Effects - Answer✔-Nausea
-Fatigue
-Diffuse redness of the skin
-Loss of hair
-Intestinal disorders
-Shedding outer layer of skin
Late Deterministic Somatic Effects - Answer✔-Cataract formation
-Fibrosis
-Organ atrophy
-Loss of parenchymal cells
-Reduced fertility
-Sterility
Late Stochastic Effects - Answer✔-Cancer
-Genetic (hereditary) effects
Skin Erythema Dose - 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? - Answer✔1928
What were used to measure for radiation dose in the early years? - 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? - Answer✔Tolerance Level; NOW called threshold dose
A radiation dose to which occupationally exposed persons could be continuously subjected
without any apparent harmful acute effects, such as erythema of the skin? - Answer✔Tolerance
dose
2
