Novel X-ray imaging using a CdTe sensor
نویسندگان
چکیده
We have developed photon-counting-type one and two dimensional CdTe X-ray image sensors with an energy-discrimination function. The one and two dimensional CdTe image sensors consist of 64 CdTe diodes with a pixel size of 0.8 mm 0.5 mm 0.5 mm (thickness) and 512 CdTe diodes with 0.8 2.0 mm 0.5 mm (thickness), respectively. Using these image sensors, we have demonstrated energy-discriminated X-ray images and material distinguished X-ray computer tomography (CT) images. In addition to them, to realize ultra high resolution in the future, we have developed a novel CdTe X-ray image sensor which consists of a CdTe diode and a matrix-driven field emitter array (FEA). We also describe the preliminary results obtained in the CdTe-FEA X-ray sensor.
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