Investigation of energy weighting using an energy discriminating photon counting detector for breast CT
نویسندگان
چکیده
منابع مشابه
Energy-resolved CT imaging with a photon-counting silicon-strip detector.
Photon-counting detectors are promising candidates for use in the next generation of x-ray computed tomography (CT) scanners. Among the foreseen benefits are higher spatial resolution, better trade-off between noise and dose and energy discriminating capabilities. Silicon is an attractive detector material because of its low cost, mature manufacturing process and high hole mobility. However, it...
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PURPOSE To quantify the concentration of soft-tissue components of water, fat, and calcium through the decomposition of the x-ray spectral signatures in multi-energy CT images. METHODS Decomposition of dual-energy and multi-energy x-ray data into basis materials can be performed in the projection domain, image domain, or during image reconstruction. In this work, the authors present methodolo...
متن کاملCharacterization and Energy Calibration of a Silicon-Strip Detector for Photon-Counting Spectral Computed Tomography
Multibin photon-counting x-ray detectors are promising candidates to be applied in next generation computed tomography (CT), whereby energy information from a broad x-ray spectrum can be extracted and properly used for improving image quality and correspondingly reducing radiation dose. A silicon-strip detector has been developed for spectral CT, which operates in photon-counting mode and allow...
متن کاملPhoton -counting Reticontm Detector
For applications in faint -object spectroscopy at the Mt. Hopkins Observatory, a photon counting detector has been built using a dual 936 Reticon diode array fibre -optically coupled to a high -gain image intensifier package. The electronic signal processing follows closely the design of Shectman; the diode array is scanned every millisecond, each frame is subtracted from the previous to minimi...
متن کاملPhoton Counting and Energy Discriminating X-Ray Detectors - Benefits and Applications
Since a few years the direct detection of X-ray photons into electrical signals is possible by usage of highly absorbing photo conducting materials (e.g. CdTe) as detection layer of an underlying CMOS semiconductor X-ray detector. Even NDT energies up to 400 keV are possible today, as well. The image sharpness and absorption efficiency is improved by the replacement of the unsharp scintillation...
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ژورنال
عنوان ژورنال: Medical Physics
سال: 2013
ISSN: 0094-2405
DOI: 10.1118/1.4813901