What is penumbra?
What will be an ideal response?
Penumbra is the fuzzy, unsharp zone around objects on a radiograph. Penumbra cannot be eliminated, but it can be minimized by increasing the target-film distance; decreasing the object-film distance; and avoiding movement of the film, the patient, and the tube head.
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True or false (circle one). The intrinsic muscles of the thumb have origins in the forearm
Indicate whether the statement is true or false.
The fundamental reason a patient uses BiPAP when sleeping is to:
A) provide high-concentration oxygen. B) keep the small airways open. C) lower the amount of exhaled CO2. D) decrease the incidence of lower airway infection.
The __________ is the temperature at which a liquid will emit vapors at a rate that will support a temporary flame as long as an ignition source is present
a. Ignition point b. Fire point c. Pyrolysis point d. Flash point
Tenosynovitis of the long biceps muscle tendon is common among athletes engaged in overhead activities.
Answer the following statement true (T) or false (F)