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Thallium-bromide (TlBr) is currently under investigation as an alternative room-temperature semiconductor gamma-ray spectrometer due to its favorable material properties. Previous work has shown that 5 mm thick pixelated TlBr detectors can achieve sub 1% FWHM energy resolution at 662 keV. However, these results are mostly limited to −20 °C operation. In addition to good electron mobility, some TlBr...
The depth of interaction in pixelated CdZnTe and HgI2 detectors is determined using either the cathode-to-anode signal ratio (CAR) or drift time information. The CAR can be used if a ??-ray interacts only once in the detector. The drift time must be used if the ??-ray interacts over multiple pixels. The accuracy of these reconstruction techniques is evaluated using a collimated fan beam of ??-rays...
We present the design and simulation of a multiple source X-ray tube based on carbon nanotube cold cathode technology. The primary intended application is tomosynthesis-based 3D image guidance during external beam radiation therapy. The tube, which is attached to the gantry of a medical linear accelerator (linac) immediately below the multileaf collimator, operates within the voltage range of 80-160...
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