Calculate the absorbed dose received by a 150 g tumour irradiated with 12 J of gamma-ray energy.Hint: Don't forget the units!

The radiation dose received by an object is measured in units of grays (Gy), where 1 Gy = 1 J/kg.  A technician uses a proton beam that delivers energy at a rate of 1 × 1016 eV/s to treat a 50 g region of tissue.  If the beam runs for 1 min, what is the dose received by the tissue?A.0.03 GyB.0.2 GyC.2 GyD.100 Gy

Match each unit used in dosimetry to its definition.Group of answer choicesSI unit of absorbed dose, equal to 1 joule of energy absorbed per kilogram of materialUnit of radiation exposure, equal to the production of 2.58x10-4 coulombs of charge produced by the radiation per kilogram of dry air through which the radiation passesSI unit of activity, equal to one radioactive decay per secondOlder unit of activity, defined to be 3.7x1010 transformations per second, which is approximately the activity of one gram of radiumUnit relating absorbed dose to the degree of biological damage caused by a particular type of radiation

Which of these quantities impacts on the equivalent dose? Select all that apply. Marks will be deducted for any incorrect responses.Group of answer choicesAbility of the tissue to absorb the radiationThe degree to which the particular type of radiation can cause biological damageEnergy flux of the incident radiationTime over which the radiation is applied

Alpha particles have a quality factor of 20. If a patient receives a dose of alpha particles at a rate of 10 mGy.h-1 for a period of 30 minutes, what is the equivalent dose that the patient receives?(Hint: There are 2 parts to this calculation. See page 296 of your textbook for a further hint if needed.)Group of answer choices5 mSv5 mGy0.1 Gy6 Sv0.1 Sv0.2 Sv

The unit 'Sievert' is used to measure:Question 52Select one:a.Radiation source strengthb.Radiation dosec.Radioactivityd.Radiation intensity