Scint-X - Structured Scintillators

Comparing Scintillators

A scintillator is a material that converts high-energy radiation like x-rays into visible light. This light can then easily be detected by devices like CCD ,CMOS or TFT sensors. Scintillator plates convert the oncoming radiation into visible light, which can be captured by an image sensor.

Conventional scintillators lack precision 
Unfortunately, there is a major issue with conventional scintillators. The created light spreads while it travels through the scintillator, which results in a light cone rather than a light spot. Thus, the image sensor would register a signal on several pixels for each incident x-ray. The amount of absorbed x-rays and therefore signal strength depends on the material thickness. Therefore, conventional scintillators involve a trade-off between sensitivity and resolution.

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Silicon channels the light
The structured scintillator technology overcomes the drawbacks of conventional digital x-ray detectors. While the visible light created through x-ray absorption spreads on its way through the crystal in unstructured scintillators, the innovative concept developed and patented by Scint-X channels the light on its way to thesensor. Narrow pores are etched into silicon in order to manufacture a matrix that can be filled with a scintillator material like Thallium doped Cesium Iodide. When x-rays enter those channels, they are converted into green light, which is reflected by the pore sidewalls and thus contained within the pore.

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Sensitivity and resolution
Thus, the spreading of created light, that would lead to crosstalk between neighboring pixels on the sensor, can be avoided. This means that the structured scintillator can be optimized with respect to sensitivity without loss of resolution.