Quiz questions Flashcards
What kV for photoelectric effect to occur
40kV and 80kV
What is the energy of particles from pair production?
The energies of the particles that result from the pair production effect are equal to 510Kev
Statement-The photoelectric effect mass coefficient is proportional to Z3 and inversely proportional to E3
The photoelectric effect mass coefficient is proportional to Z3 and inversely proportional to E3
Radioactive isotopes of iodine examples
Iodine 129
Iodine 131
Exposure- Coulomb
Absorbed dose- Grey
Dose equivalent- Sievert
Effective dose- Sievert
Exposure- Coulomb
Absorbed dose- Grey
Dose equivalent- Sievert
Effective dose- Sievert
Unmodified, elastic or classical scatter - scatter
Photo-electric process - absorption
Compton process - both
Pair production - both
Unmodified, elastic or classical scatter - scatter
Photo-electric process - absorption
Compton process - both
Pair production - both
What radio istope emits beta negative particles and used in medicine?
Iodine 131 becomes iodine 129
Used in nuclear medicine treatment
What radio istope emits beta positive particles and used in medicine?
Fluorine 18/9 to oxygen 18/8
PET scanner
The photo-electric mass attenuation coefficient is related to atomic number and energy. How is it related?
Proportional to Z cubed , inversely proportional to E cubed
The Electromagnetic Spectrum consists of different wavelengths of radiations that act upon different bodies;
Which of the following act upon Atoms and Molecules respectively A) Gamma rays and Radio Waves. B) Visible light and Radio Waves. C) Radio waves and Microwaves. D) X-Rays and Microwaves.
D) X-Rays and Microwaves.
Select ONE option from the list below that correctly states the whole body upper
dose for limit for a student radiographer.
A. 6 mSv
B. 12 mSv
C. 18 mSv
6mSv
Bremsstrahlung radiation is also known as
Braking radiation
