Sensors for Dummies

by Larry Emmott on August 26, 2014

in Radiography

A corded sensor has three basic elements. First is a scintillator. When x-rays impact the scintillator it fluoresces, creating a very precise pattern of light.

Many, but not all, sensors have an optical fibre. It transmits the light from the scintillator screen to the chip and protects the chip from x-rays.

A solid state computer chip receives the light and converts it into a digital electronic signal. This is the same basic chip technology that a digital camera uses to convert light into a digital photo. There are two different types of chip in use; they are CCD (Charged Couple Device) and CMOS (Complimentary Metal Oxide Semiconductor).

These two chip types function differently but both produce good images of diagnostic quality.

More information about digital radiography in the dental office.

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