Introduction To Health Physics
5th Edition
ISBN: 9780071835275
Author: Johnson, Thomas E. (thomas Edward), Cember, Herman.
Publisher: Mcgraw-hill Education,
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Chapter 4, Problem 4.31P
(a)
To determine
The specific power of
(b)
To determine
The specific power of
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Chapter 4 Solutions
Introduction To Health Physics
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- Find the radiation dose in Gy for: (a) A 10mSv fluoroscopic xray series. (b) 50 mSv of skin exposure by an emitter. (c) 160 mSv of and rays from the 40K in your body.arrow_forwardWhat is the dose in Sv in a cancer treatment that exposes the patient to 200 Gy of rays?arrow_forwardIB. Wliv is a PET scan more accurate than a SPECT scan?arrow_forward
- Data from the appendices and the periodic table may be needed for these problems. Show that the activity of the 14C in 1.00 g of 12C found in living tissue is 0.250 Bq.arrow_forwardCalculate the dose in Sv to the chest at a patient given an xray under the following conditions. The xray beam intensity is 1.50 W/m2, the area of the chest exposed is 0.0750 m2 35.0% of the xrays are absorbed in 20.0 kg of tissue, and the exposure time is 0.250 s.arrow_forwardWhat is the dose in mSv for: (a) a 0.1 Gy xray? (b) 2.5 mGy of neutron exposure to the eye? (c) 1.5 mGy of exposure?arrow_forward
- The linear absorption coefficient for 1-MeV gamma rays in lead is 78 m1. Find the thickness of lead required to reduce by one-fourth the intensity of beam of such gamma rays.arrow_forwardA medical researcher is using a chromium-51 source to study red blood cells. The gammaemissionintensity at a distance of 1.0 m is 0.75 mrem/s· m 2 .At what distance would the intensity drop to 0.15 mrem/s· m 2 ?arrow_forwardRadioactive Pm-147 decays by the release of a beta-particle with an averageenergy of 62.0 keV. A sample of Pm-147 serves as a radionuclide power source. It has anactivity of 4.64×105 Curies. How much thermal power in watts does the Pm-147 sampleproduce?arrow_forward
- Find the fraction of 7.7meV alpha particles that would be deflected at 90degrees or more from a gold foil of thickness 10^-6m.arrow_forwardA radioactive source is producing 1.50 MeV gamma rays. If two detectors are placed 4.00 m and 7.00 m away respectively, what is the ratio of the measured intensities of the near detector over the far detector (I2/I1)? Do NOT include units in your answer answer to 2 decimal places.arrow_forwardProton-beam therapy for cancer uses a typical 150 MeV energy to give penetrating power. If five watts of heating power is the maximum that can be tolerated, calculate, i) the number of protons incident per second on the patient, ii) the beam current in amps.arrow_forward
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