Which of the following describes the collimator of the panoramic x-ray beam?

A) It is circular (round).
B) It is concentric (cone shaped).
C) It is rectangular.
D) It is a narrow slit.


D
Explanation: A) Unlike the concentric or rectangular beam of x-radiation of intraoral radiography, the x-rays emerge from a narrow vertical slit opening in the tube head and are constricted to form a narrow band.
B) Unlike the concentric or rectangular beam of x-radiation of intraoral radiography, the x-rays emerge from a narrow vertical slit opening in the tube head and are constricted to form a narrow band.
C) Unlike the concentric or rectangular beam of x-radiation of intraoral radiography, the x-rays emerge from a narrow vertical slit opening in the tube head and are constricted to form a narrow band.
D) Unlike the concentric or rectangular beam of x-radiation of intraoral radiography, the x-rays emerge from a narrow vertical slit opening in the tube head and are constricted to form a narrow band.

Health Professions

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