HESI SAFETY ASSIGNMENT

When a lead apron is worn during a procedure, the
personnel dosimeter should be placed

• under the lead apron at collar level

• outside of the exam room

• outside of the apron at collar level
  

• at waist level

When a 1-mm Pb flat contact shield is used to shield

male reproductive organs, their dose is reduced by

about how much?

• 10%

• 50%

• 90-95%

• 100%

The feature(s) of digital fluoroscopy that function to reduce patient dose are

• magnification mode

• pulsed fluoroscopy

• last image hold

When individuals are exposed to radiation on a regular basis through their work and are at risk of receiving 10% or more of the annual effective dose (EfD) limit, which of the following is most commonly used to monitor their radiation exposure over time?

• ALARA

• Proportional counter

• Radiation survey instrument

• Personnel dosimetry

During mobile radiography, the source-to skin (SSD)

distance must NOT be less than

• 12 inches

• 15 inches

• 20 inches

• 24 inches

To check for cracks and damage, lead aprons and other protective apparel are imaged

• prior to each use

• monthly

• annually

• lead aprons and other protective apparel should not be imaged

Which of the following cellular components has the greatest radiobiological significance?

• Ribosomes

• Mitochondria

• DNA

• RNA

Which of the following technical exposure factors would help to minimize patient exposure? (select the two that apply)

• High kVp

• Low kVp

• High mAs

• Low mAs

For examinations using stationary fluoroscopes, patient entrance exposure can be limited by maintaining a minimal source-to-skin distance (SSD) of

• 30 cm

  (12 in)

• 15 cm

  (6 in)

• 38 cm

  (15 in)

• 25 cm

  (10 in)

Tags

NGSS.HS-PS4-5

What is the potential consequence of making an exposure without using a focusing cup?

• Less leakage radiation

• More primary radiation

• More off-focus radiation

• Increased image resolution