Each of the following statements regarding fundamentals of panoramic radiography is correct EXCEPT one. Which one is the EXCEPTION?
a. The rotational center is the axis on which the tube head and the cassette rotate.
b. The x-ray source and the film remain stationary.
c. They are based on the principles of tomography.
d. The x-rays emerge from a narrow, vertical slit in the tube head.
b. In panoramic radiography, the x-ray source and image receptor move in opposite directions in relationship to each other to focus the x-ray beam on the area of interest.
You might also like to view...
What is sequenced first when a modified neck dissection is performed?
A) lymph node dissection B) thyroidectomy C) tissue excision D) lobectomy
An ambulatory home O2 therapy patient complains that the portable liquid (at 3 L/min) does not last long enough for a visit with the grandchildren. What might you recommend to overcome this limitation?
a. Decrease the flow to 2 L/min. b. Put a couple of E cylinders in her car. c. Use an O2-conserving device. d. Put the large liquid unit in the car.