Photon Counting
A Non-Demolition Photon Counting Method by Four-Level Inverted Y-Type Atom
... It is known that the absorption and dispersion spectra of multilevel atoms, interacting with multi-modes coupling and probe fields, contain much information about the properties of coupling fields as well as the optical ...
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Photon Counting CT of the Brain: In Vivo Human Results and Image Quality Assessment
... Photon-counting CT is a new development in CT scanning in which fully digital detectors replace crystals that emit light and photodetectors. In this study, objective measures of image quality showed that ...
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MABEL photon-counting laser altimetry data in Alaska for ICESat-2 simulations and development
... Given this new approach to satellite surface elevation measurement, an airborne instrument, the Multiple Altime- ter Beam Experimental Lidar (MABEL), was developed to (1) enable the development of ICESat-2 geophysical ...
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Analytical Modeling and Performance Assessment of Micropulse Photon-counting Lidar System
... In Chapter 2, we have presented a framework for the simulation of ICESat-2-like space- borne photon-counting detector performance on a complex surface. A multiple pixel PMT and lidar system model was ...
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Reduction of the Beam Hardening Artifacts in the X Ray Computer Tomography: Energy Discrimination with a Photon Counting Detector
... a photon-counting line sen- sor has been developed and shown to be feasible for ma- terial discrimination [9], but one problem was the pres- ence of artifacts due to beam ...
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Temperature study of Al0.52In0.48P detector photon counting X-ray spectrometer
... characterised at temperatures from 100 °C to -20 °C for the development of a temperature tolerant photon counting X-ray spectrometer. At each temperature, X-ray spectra were accumulated with the AlInP ...
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Characterisation of Al0.52In0.48P mesa p-i-n photodiodes for X-ray photon counting spectroscopy
... Wide bandgap photodetectors may play a very important role in aerospace and military applications; since they present lower leakage currents [1, 2] than alternative narrower bandgap materials, such as silicon or ...
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InGaP (GaInP) mesa p-i-n photodiodes for X-ray photon counting spectroscopy
... tion instrumentation with excellent characteristics. The results reported in this paper are the first detection of X-rays with InGaP and the first demonstration of its suitability for photon counting X-ray ...
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Performance evaluation of the next generation solid-state digital photon counting PET/CT system
... Philips Healthcare introduced the first solid-state, SiPM digital photon counting (DPC) PET/CT system at RSNA 2013. Before that, its prototype system demon- strated better image quality and diagnostic ...
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Single Photon Counting Detectors for Low Light Level Imaging Applications
... In photon counting mode, on the other hand, they are read out very quickly and a threshold circuit is used to decide whether or not a photon was absorbed during the very short ...a photon was ...
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Photon Counting Image Fusion Algorithm Based on Adaptive Threshold of Regional Energy
... get photon counting fusion images with better effect, it is proposed a fusion algorithm based on adaptive threshold of regional energy fusion ...The photon counting image is obtained by the ...
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A multi-layer edge-on single photon counting silicon microstrip detector for innovative techniques in diagnostic radiology
... impinging on one of the thin sides of the silicon chip, instead of striking one of the large surfaces as occurs—for instance—in high energy physics experiments. In this way, the whole depth of the chip is made available ...
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Development of the BigMIC image photon counting detector
... The current MIC intensifiers use a P20 phosphor on the output. When operated in a pulsed mode, Belhs (1992) has found that there are 3 long term decay components associated with this phosphor. These could lead to enough ...
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Multicolour imaging with spectral photon-counting CT: a phantom study
... The modified clinical base, small field of view (FOV) SPCCT prototype system (Philips Healthcare, Haifa, Israel) is equipped with a conventional x-ray tube that can be set with a tube voltage at 80, 100 or 120 kVp and ...
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An Investigation of How Pixel Size Affects the Energy Resolution of a Photon Counting X ray Imaging System
... Basic Design Model: The purpose of this model is to develop a system which shows how the pixel size affects the energy resolution of photon counting x-ray systems. The basic design model for the task is ...
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Simultaneous dual-contrast multi-phase liver imaging using spectral photon-counting computed tomography: a proof-of-concept study
... spectral photon-counting computed tomography (SPCCT) provides additional information on the energy spectrum of x-ray photons after passing through the patient and can thus detect spectral differ- ences in ...
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SPCM-AQRH Single Photon Counting Module
... Recent electronic circuit improvements have reduced the minimum dead time to less than 25ns, thereby increasing linearity and improving the dynamic range of the module. Timing resolution of the module was also improved ...
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Circuit Architecture for Photon Counting Pixel Detector with Thresholds Correction
... for photon counting image sensors are based on analog and digital circuits, such as the Medipix 2 ...[1]. Photon-counting pixels contain complex circuitry, which means that the pixel design is ...
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Comparison of a Photon Counting Detector CT with an Energy Integrating Detector CT for Temporal Bone Imaging: A Cadaveric Study
... prototype photon-counting-detector CT scanner and an energy-integrating-detector CT scanner that uses a comb ...for photon-counting-detector ...
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Time-Correlated Single Photon Counting
... of photon detectors is still ...single photon detection in analog ...create photon de- tectors with excellent timing performance and high sensitivity reaching into the infrared ...
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