Metal envelope x-ray tubes are gaining in popularity. Explain some key advantages to a metal housing x-ray tube.
What will be an ideal response?
Metal envelope tubes place a ground on the metal casing. This feature minimizes the buildup of tungsten deposits on the inside of the envelope, as the envelope never builds up a positive charge to attract the electrons as they travel from cathode to anode. This is not possible with a glass envelope tube.
Because of this feature, x-ray tubes last longer and remain more efficient for the life of the tube. Additionally, metal envelope tubes prevent electrons from exiting the tube and striking the patient if the SID is extremely close.
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a. Rhonchi b. Friction rub c. Rales d. Wheezing
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A) inappropriate. B) ethically acceptable. C) a true ethical dilemma. D) legal under the law of implied consent.
Which code represents implantation of patient-activated event recorder including programming?
a. 33249 b. 33265 c. 33282 d. 33284