n. Introduction to Quality Assurance. Covered in this course are testing
procedures for radiographic and processing systems designed to assure consistency of
quality images. Also covered are darkroom chemistry and processing procedures,
sensitometry characteristics, preventive maintenance, knowledge of equipment, and
state and federal regulations governing the radiographic environment.
AS LOW AS REASONABLY ACHIEVABLE
"As Low As Reasonably Achievable" is the guiding principle for radiation
professionals around the world. Many states are now requiring those
facilities where radiation exposure exists to put ALARA programs in
place. The principle "ALARA" Is directed not only at the x-ray
technologist but at the patient as well. Radiographers worry about
working in a risky business. According to Robert S. Wenstrup, PhD, at
the Lahey Clinic Medical Center in Burlington, MA, x-ray technologists
"have a 1-in-10, 000 chance of suffering serious effects from radiation
exposure." To put that in perspective he adds, "you can stay at home
and have a risk of 1-in-20, 000 of falling down the stairs."6 Patients
worry that the radiation they receive during diagnosis and treatment will
produce unwanted biological effects later on. Radiographers must keep
ALARA principles in mind at all times to protect themselves and their
patients from radiation exposure. They must also be prepared to discuss
these principles with the public and with Joint Commission on
Accredhahon of Healthcare Organization visitors.
RADIATION BIOLOGY
Knowledge of what happens when radiation interacts with the human
body will give you a greater sense of commitment to protecting yourself
and others from the harmful effects of radiation. Proper application of
radiation biology principles is critical for reducing possible genetic
damage to future generations resulting from unnecessary radiation
exposure. You are more likely to remember to wear your lead apron, for
example, if you have a full understanding of the effects of scatter
radiation. You are more likely to remember to take one step back during
a fluoroscopy procedure if you are aware of the fact that increasing the
distance will decrease exposure.
MD0067
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