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Which of the following are involuntary motions that cannot be willingly controlled?
1. Chills
2. Tremors
3. Muscle spasms
4. Pain
5. Active withdrawal
Select one:
a. 1, 2, 3, and 5 only
b. 2, 3, 4, and 5 only
c. 1, 2, 3, and 4 only
d. 1, 2, 3, 4, and 5
Which of the following are areas of the body that should be shielded from the useful beam whenever possible?
Shielding, wherever possible is effective for protection of the patient's radio-sensitive organs, such as the breast, gonads, eyes and thyroid.
What step should be taken in the event that a pregnant patient is inadvertently irradiated?
In the event that a pregnant patient is inadvertently irradiated: the radiologic physicist should perform the calculations necessary to determine fetal dose.
How does filtration of the radiographic beam reduce exposure to the patient's skin and superficial tissues?
By absorbing the low- energy photons, this method of “hardening the beam” increases the overall energy, or quality, of the beam. The leftover photons are more penetrating and are less likely to be absorbed by the patient's body tissue, thus decreasing the absorbed dose to the patient.
Why should a radiographer use a standardized technique chart to select technical exposure factors before performing an imaging procedure?
Its purpose is to provide a consistent method of choosing the proper exposure factors to create a diagnostic radiograph. On the basis of the thickness of tissue and anatomic area of the body, the radiographer can consult the technique chart for a predetermined machine setting.