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Stack #4718807

QuestionAnswer
Use of protective devices Lead aprons o Thyroid shields o Lead glasses o Protective barriers
Patient motion is a major cause of image degradation.
Causes of motion: Fear o Pain o Age o Breathing
involuntary motion Tremors o Chills o Muscle spasms
benefits of repeat analysis: Reduce patient exposure o Improve departmental performance o Identify process improvement opportunities
Causes of unacceptable images: Mispositioning o Incorrect centering o Motion o Poor collimation
ALARA principle as low as reasonable achievable
techniques on minimizing patient dose Proper collimation • High kVp / low mAs technique • Repeat exposure reduction • Technique charts and standardized exposure settings • Automatic Exposure Control (AEC)
Importance of avoiding repeat images causes extra exposure
Modern changes to gonadal shielding practices causes extra exposure
Quantum noise / quantum mottle causes blurry
Students should understand the purpose and safety of equipment components
Fetal radiation exposure very dangerous
Artifacts in digital imaging Aliasing o Moiré patterns o Contouring
Lead equivalent thickness for protective equipment
Created by: Gina_d2
 

 



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