WebPhoton-counting computed tomography of lanthanide contrast agents with a high-flux 330- μ m-pitch cadmium zinc telluride detector in a table-top system J Med Imaging (Bellingham). 2024 May;7 (3):033502. doi: 10.1117/1.JMI.7.3.033502. Epub 2024 Jun 15. Authors WebFeb 17, 2012 · We derive a closed photocounting formula, including noise counts and a finite quantum efficiency, for photon-number-resolving detectors based on on-off detectors. It applies to detection schemes such as array detectors and multiplexing setups.
Modified-triggered photocounting and its application to optical ...
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True photocounting statistics of multiple on-off detectors
Photon-counting computed tomography (PCCT) is a form of X-ray computed tomography (CT) in which X-rays are detected using a photon-counting detector (PCD) which registers the interactions of individual photons. By keeping track of the deposited energy in each interaction, the detector pixels of a PCD … See more Often EIDs are used as a baseline for comparison when evaluating PCD performance capabilities. With this lens, there are several potential advantages of using a PCD over using an EID in CT imaging. These … See more Discrete energy-dependent detection When a photon interacts in a PCD, the amplitude of the resulting electrical pulse is roughly proportional to the photon energy. By comparing each pulse produced in a pixel with a suitable low-energy threshold, … See more Classical CT reconstruction The fundamental challenge of tomographic reconstruction is the inverse problem of reconstructing the 3D, tomographic information of a … See more Experimental PCDs for use in CT systems use semiconductor detectors based on either cadmium (zinc) telluride or silicon, neither of which … See more WebDec 1, 2024 · Many properties of a quantum optical field can be judged by a photocounting experiment, this has been possible ever since Einstein explained the photoelectric effect, which happens in the emission of electrons or other free carriers when light shines on … WebThe characteristics of the modified-triggered photocounting rate of photoelectric pulses, counted up and down at a certain frequency after a pulse has occurred, were studied. It was found that the counting rate is equal to the magnitude of photocurrent passed through a narrowband filter whose middle frequency is the up–down counting rate. From this result, … highline 600