Radiation Health & SafetyCâu 17 / 100
A receptionist who never operates x-ray equipment sits at a desk near the operatory wall. Which annual dose limit applies to her?
a.5 rem, the same as an occupationally exposed worker
b.0.1 rem (0.001 Sv), the limit for non-occupationally exposed persons
c.There is no limit because she is an employee
d.10 rem, because she is inside the building
Giải thích
Staff who are not occupationally exposed to radiation are held to the much lower public limit of 0.1 rem (0.001 Sv) per year. The 5 rem limit applies only to workers whose duties involve radiation. There is always a limit for any person, and 10 rem is not a recognized annual limit for anyone in a dental setting.
Trích dẫn luật: NCRP Report No. 145: Radiation Protection in DentistryLuyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- The time between radiation exposure and the first visible clinical signs of biological damage is called the:
- Which group of tissues is considered MOST radiosensitive and therefore of greatest concern during dental radiography?
- Ionization occurs in tissue when:
- Compared with D-speed film, direct digital sensors generally allow the operator to:
- Aluminum filtration is placed in the path of the x-ray beam in order to:
- According to the inverse square law, if the distance from the x-ray source to the receptor is doubled, the beam intensity at the receptor becomes:
Cập nhật gần nhất: · quy trình kiểm tra
Đội Ngũ Biên Tập PrepPass · Đối chiếu với DANB Radiation Health & Safety (RHS) + Infection Control (ICE) Exams · Quy trình kiểm tra