By William Amestoy
This learn consultant can be a competent aid and easy-to-use resource of data for college students within the fields of dosimetry, physics, radiation oncology, and treatment as they growth throughout the academic degrees in practise for board examinations. The theoretical and functional wisdom won by means of scholars on past classes or in scientific settings is bolstered through nearly 1200 questions and accompanying particular analytical answers.
In order to cater for the wishes of all scholars, the questions are prepared in line with 3 degrees of hassle. the extent 1 questions are in general meant for these hoping to move the scientific Dosimetrist Certification Board (MDCB) examination yet can be important for scientific Physics applicants taking written tests and for Radiation Oncology citizens. the extent II questions are in most cases clinically similar and may be proper for any scholar, whereas the extent III questions are complex and are in particular compatible for American Board of Radiology applicants or these taking identical checks in other places within the world.
The research consultant is damaged down into varied topic components, with provision of a number of questions and solutions on every one topic. additionally, the mathematical and physics questions comprise short factors of ways the scholar can clear up each one challenge. on the finish of the consultant, 3 perform checks are integrated with an identical variety of questions as are present in the MDCB examination. those assessments may also help scholars to check their wisdom and enhance their test-taking speed.
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Extra info for Review of Medical Dosimetry: A Study Guide
Sample text
29 Low atomic number materials High atomic number materials High-energy photons Low-energy photons 11. A. B. C. D. E. I. II. The following are characteristics of the photoelectric effect: I, II, and III only I and III only II and IV only IV only All are correct An incoming photon is totally absorbed by an inner shell electron. An atom is ionized when an electron is ejected from an orbital leaving a vacancy. III. An electron from outer shell fills a vacancy in an inner shell producing a characteristic X-ray.
D. What focal spot is used in therapy machines? Small focal spot Triangular focal spot Stationary focal spot Large focal spot 11. What is the target angle in a therapy machine? 15–30° C. 1–2 mm D. 5–7 mm 12. 5 mm and the target angle is 20°. A. 5 mm B. 3 Production of X-Ray (Questions) C. D. 85 mm 3 mm 13. A. B. C. D. The function of the low-voltage circuit on an X-ray generator is? Supply heating current to the filament. Provide the accelerating potential for the electrons. Control the tube current.
A. B. C. D. E. I. II. III. Mechanisms to move the Co-60 source from the off to on position include: I, II, and III only I and III only II and IV only IV only All are correct Source mounted on a rotating wheel Source mounted in a drawer plus its ability to slide horizontally Mercury flows into the space immediately below the source to shut off the beam IV. Source fixed in front of the aperture where heavy metal jaws shutter can be opened 30. A. B. C. D. The penumbra of a Cobalt-60 teletherapy beam is: Smaller than that of a linear accelerator Bigger than that of a linear accelerator Same as that of a linear accelerator Smaller on the on position and bigger on the off position than that of the linear accelerator 31.
