What is the exposure rate at 30 cm from a vial containing 20 mCi (740 MBq) of 131I?
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5. What is the exposure rate at 30 cm from a vial containing 20 mCi (740 MBq) of 131I?
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- 15. An IV infusion is administered to a 120 lb patient by IV infusion at a rate of 1.8 mg/kg/hr. The drug has a half-life of 8 hours and distributes into a volume of 15 L. a) Find the concentration function C(t) while the infusion is being administered. b) Find the loading dose required to make C(1) a constant if the infusion continues. c) If the loading dose from part b is given followed by 24 hours of infusion at 1.8 mg/kg/hr, graph the concentration for the first 48 hours. d) If the loading dose from part b is given followed by 24 hours of infusion at 1.8 mg/kg/hr, how long will the concentration remain within the therapeutic window of 50-100 mcg/ml?Technetium-99 m has a half life of 4.8 hours. If a patient receives a dose with an activity of 60.2 mCi of Technetium 99 for cardiac imaging how much radioactivity will be left in the patients body 48 hours after injection?If the gamma-ray dose rate is 50 mSv hr-1 at a distance of 1.0 m from a source, what is the dose rate at a distance of 10 m from the source?
- technetium half life is 4.8 hours. If a patient receicves a dose with an activity of 35.9 mCi of technetium for cardiac imaging how much radioactivity will be left in the patient's body 96 hours after injection?how much dose is absorbed in 30 min in a sphere of water 1cm in diameter, with an infinitesimally small P-32 souce placed at center of the sphere, with 6x105 disintegrations per gram of water? Eb- = 1.71 MeV A) 12 cGy B) 24 cGy C) 29 cGy D) 6cGy E) 59 cGySo I just need help with the last question where it gives you the 160 The answer for the first question is 1.168 x 10^12 And the answer for the second one is 0.140 , i just need taht last one
- 9)A drug has a half-life of 6 hours. The drug is administered by I/V injection, and immediately after administration its plasma level is 136mcg/ml. Results for a blood test later on show a plasma level of 8.55mcg/ml. How many half-lives have passed?3. A GM counter has dead time of 250 s. It records 20,000 counts per minute. What is the actual count rate? [Ans. 21,820]The intensity of radiation at 10 ft was 200 R/hr. If the technologist moved to 5 ft from the source of radiation, what would the exposure be? O a. 400 R/hr Ob. 800 R/hr Oc. 100 R/hr Od, 50 R/hr
- 44. A nuclear power plant accident exposes a population of 24,000 people to an A. 0.38 person-Sv B. 0.38 man-rem C. 220 person-Sv average effective dose of 9.2 mSv. What is the collective effective dose? D. 220 man-remCalculate the volume needed to dispense a 21 mCi dose from a Tc-99m DTPA vial containing 400 mCi in 6 ml. Answer:Inverse Square Distance of 40” = 5mR New distance = 36”, what is your new dose ___________