X-Ray Certification Patient Protection 3

Question 1

Which type of radiation interaction deposits the most dose in superficial skin tissue during diagnostic x-ray imaging?

Accepted Answer

Photoelectric absorption

Answer

Photoelectric absorption involves complete absorption of the photon by tissue atoms, depositing all its energy locally and contributing the most to skin dose.

Question 2

A flat contact shield placed directly on the patient's skin is most effective for protecting:

Accepted Answer

Superficial radiosensitive gonads in males

Answer

Flat contact (shadow) shields placed directly over the testes are highly effective because the gonads are superficial and close to the surface.

Question 3

What does the term 'effective dose' measure in radiation protection?

Accepted Answer

The whole-body equivalent dose that accounts for tissue radiosensitivity

Answer

Effective dose incorporates tissue weighting factors to express the overall risk from partial-body irradiation as an equivalent whole-body dose.

Question 4

Which pediatric patient factor requires the radiographer to reduce technique compared to an adult of similar size?

Accepted Answer

Greater tissue radiosensitivity and smaller body part thickness

Answer

Children have more radiosensitive tissues and thinner body parts, requiring lower technique to avoid over-exposure and minimize dose.

Question 5

The 10-day rule in radiography historically referred to scheduling elective pelvic/abdominal exams on female patients during which period?

Accepted Answer

The first 10 days following the last menstrual period

Answer

The 10-day rule recommended scheduling non-urgent pelvic/abdominal x-rays during the first 10 days of the menstrual cycle when pregnancy is least likely.

X-Ray Certification Practice Test

X-Ray Certification Practice Test

X-Ray Certification Patient Protection 3