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Medical Dosimetry Certification Prep Revision
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Medical Dosimetry Certification is a professional credential, primarily administered by the Medical Dosimetrist Certification Board (MDCB), that validates a practitioner's expertise in planning cancer radiation treatments. It requires passing a rigorous exam after completing an accredited education program, ensuring competency in dose calculations, treatment planning, and safety. Role of a Certified Medical Dosimetrist As part of the radiation oncology team (alongside doctors and physicists), they determine the best beam arrangements and radiation doses to destroy tumors while sparing... Show more
Medical Dosimetry Certification Prep Revision
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25 Questions

1. A therapeutic depth, depth of the 90% depth dose, in cm for a clinical electron beam of most probable energy E(MeV) is approximately given by _____

2. The beam quality and output must be monitored_____

3. The important parts of a simulator are:
the x-ray source

4. What are the most important characteristics of electron beam Isodose curves that influence treatment planning?

5. presence of bone in the beam path decreases the dose behind the bone for a 60 cobalt beam by about______

6. All radiation workers have a radiotherapy department must have training and certification in_____

7. electrons have a _____ range in a medium

8. A video monitor handle signals in what form?

9. The scatter dose that any given point in a phantom or patient can be determined_______

10. The electron beam indicident on the patient exhibits a spectrum with ______

11. Any treatment involving a pair of wedged fields, the hinge angle is 90°. what wedge angle must be chosen to get uniform dose to the region of overlap?

12. QA tests on the TPS must be carried out_____

13. Tumor lethal dose or TLD is_____

14. The RAM memory of modern computers can be as large as______

15. What is the half-life of 125 I

16. The gas filled detector used in beta gamma survey monitors is______

17. Surface dose for electron beams:

18. OER (oxygen enhancement ratio) for photon or electron therapy is around______

19. Jaw position influences the electron beam quality of a therapy accelerator. T or F

20. The Compton (electronic) scattering cross-section depends on_____

21. in a computer the data 0 or 1 is called_____

22. The center of the clinical target volume CTV, can be determined_____

23. for 125I or 103Pd sourcesembedded in a medium, the dose fall off with respect to distance significantly deviates from the_____

24. in a simulator, if the mA and kVp are kept constant and the mAs is changed,_____

25. gamma emissions take the nuclide only from _____ state to _____ state