Questions and Answers
Which of the following is (are) included in whole-body dose equivalents? (Select all that apply)
Which of the following body parts is (are) included in whole-body dose? (Select all that apply)
What is the annual TEDE limit for radiation workers?
50 mSv
What is the established annual occupational dose-equivalent limit for the lens of the eye?
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What is the gestational dose-equivalent limit for embryo/fetus of a pregnant radiographer?
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What is the pregnant radiographer's gestational dose-equivalent limit for a 1-month period?
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What is the dose equivalent limit for a radiography student under the age of 18 years?
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Which of the following statements regarding the pregnant radiographer is (are) true? (Select all that apply)
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Under what circumstances might a radiographer be required to wear two dosimeters? (Select all that apply)
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Study Notes
Whole-Body Dose Limits
- Whole-body dose equivalent includes radiosensitive organs: gonads, lens of the eye, and blood-forming organs.
- Annual Total Effective Dose Equivalent (TEDE) limit for radiation workers is set at 50 mSv (5 rem).
- NCRP recommends an occupational effective dose limit of 50 mSv (5 rem) for radiation workers.
- The annual occupational dose for the lens of the eye is 150 mSv (15 rem), while for thyroid, skin, and extremities, it is 500 mSv (50 rem).
- Gestational dose-equivalent limit for a pregnant radiographer is 5 mSv (0.5 rem) during pregnancy; 0.5 mSv (50 mrem) is the limit per month.
- For students under 18 years, the dose limit is 1 mSv (0.1 rem), aligned with general public safety limits.
Radiation Monitoring
- Radiation workers must wear monitors when receiving 10% or more of annual TEDE limit.
- To adhere to ALARA (As Low As Reasonably Achievable), radiation exposure should be minimized in practice.
- Monthly readings of dosimeters provide ongoing tracking of radiation exposure.
Special Considerations for Pregnant Radiographers
- Pregnant radiographers should declare their pregnancy and review their radiation history.
- It is recommended to wear a second dosimeter: one at the collar and a fetal dosimeter over the abdomen during fluoroscopy.
- This additional monitoring is crucial during special vascular procedures due to higher potential exposures.
Dosimeter Usage
- The standard practice for radiographers is to wear a dosimeter at the collar, outside the lead apron.
- During pregnancy or specific procedures, a second dosimeter is essential to monitor fetal exposure accurately.
- Monthly readings of both dosimeters are taken to ensure compliance with safety measures.
Additional Guidelines
- Radiographers are not required to leave the radiation area due to pregnancy, ensuring continued professional engagement.
- Significant exposure can occur during vascular procedures, highlighting the need for careful monitoring and protective measures.
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Description
Test your knowledge on radiation exposure and monitoring with these flashcards. This quiz covers whole-body dose equivalents, body parts at risk, and annual limits for radiation workers. Challenge yourself to understand the key concepts in radiation protection.
