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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 scattering foil is used in the clinical accelerator to _____

2. determine the different configurations of 2 bits

3. The x-ray beam flatness must be within about_____

4. What type of radiation does similar can be used for radiation therapy beam calibration?

5. What checks must be carried out daily in Cobalt 60 teletherapy?

6. Planning of multiple fields is much _____ compared to parallel-opposed fields treatment

7. TPS computed dose can be checked by_____
manual dose calculation for specific cases

8. What does tumor localization refer to?

9. TAR at depth of Dmax, (used to correct for scatter of the dose) is called the _______.

10. The survey meters used for checking radiation levels are based on____

11. functional performance of radiation therapy equipment can change due to______

12. A brachytherapy source is considered leaky if the wipe test indicates an activity exceeding

13. out of diagnostic x-ray, ortho-voltage x-ray, electron, or megavoltage which will have the highest skin sparing effect?

14. brachytherapy interstitial implants_______

15. The AAPM TG-51 protocol is based on calibration in 60Co beam, in terms of _____

16. To reduce the dose in the shielded region to less than 5% of the open field dose, the minimum shielding block thickness must be______

17. The SI unit of equivalent dose is

18. According to AAPM Task Group 51 , the reference depth (in water) for electron beam calibration, is given (in cm) by______

19. The radius in cm of the equivalent circular field of a 10 cm x 10 cm field is approximately______

20. The mean life of a 192 Ir source is given by

21. penumbra of a 60 Cobalt beam:

22. When using a pair of wedged treatment fields, the wedge angle is much larger than the ideal one. The interior region of overlap will lead to______

23. film can be used for measuring______

24. While comparing measured and TPS computed data_____

25. one becquerel corresponds to the following number of nuclear transformations per second