Christos. M. Michail

Christos. M. Michail

Chu La Timone, Marseille, France Department Of Medical Physics, School Of Medicine, University Of Patras, 15310, Rion, Greece

Direct Impact

Concepts for which Christos M Michail has direct influence:

luminescence efficiency
imaging performance
single crystal
powder scintillator
spectral compatibility
monte carlo
pet scanners

External impact

Concepts related to the work of other authors for which Christos M Michail has influence:

imaging performance
luminescence efficiency
single crystal
phosphor screens
spectral compatibility
x-ray excitation
powder scintillator

Prominent publications by Christos. M. Michail

KOL-Index: 79 The aim of the present study was to investigate the absolute luminescence efficiency (AE) of a CaWO4 screen, under X-ray irradiation and to compare it with a custom made PMMA/Gd2O2S:Tb composite film screen. The emitted light was evaluated by performing measurements of the AE under X-ray exposure conditions, with tube voltages ranging from 50 to 125 kV. The spectral compatibility of the ...
Known for
X-Ray Exposure Conditions | Absolute Luminescence Efficiency | Composite Film Screen | “gold
KOL-Index: 74 During the last decades, there is increasing interest in applications of scintillators at harsh environments (i.e., high temperatures or radiation fluxes), such as in geophysical detectors for deep geology boreholes, non-destructive testing (NDT) of pipelines in oil and gas industry, space and marine exploration, nuclear reactor monitoring, radiation chemistry, etc. To this aim, the current ...
Known for
Efficiency Caf2 | Crystal Scintillators | Units 128
KOL-Index: 67 Kidney and uteric stones are a common cause of pain and disturbance in numerous people worldwide, as they tend to reappear. There are several studies investigating the association of urolithiasis and nephrolithiasis with atherosclerosis, as patients suffering from the former diseases were found to have been diagnosed with atherosclerotic plaques. Hydroxyapatite and calcium oxalate are the ...
Known for
Characterization Dual | Ray Method | Uteric Stones | Oxalate Thicknesses
KOL-Index: 67 Certain imaging performance metrics are examined for a state-of-the-art 20 μm pixel pitch CMOS sensor (RadEye HR), coupled to a Gd2O2S:Tb scintillator screen. The signal transfer property (STP), the modulation transfer function (MTF), the normalized noise power spectrum (NNPS) and the detective quantum efficiency (DQE) were estimated according to the IEC 62220-1-1:2015 standard. The detector ...
Known for
Gd2o2s Screen | Detector Imaging | Pitch Cmos
KOL-Index: 64 Background: In this study, the light output of a cadmium tungstate (CdWO4) single crystal was measured under various X-ray radiographic energies. Methods: A CdWO4 single crystal (10 × 10 × 10 mm3) was exposed to X-rays in the 50–130 kVp range. Measurements were evaluated against published data for single crystals of equal dimensions (CaF2:Eu and Lu3Al5O12:Ce). Since the crystal was examined ...
KOL-Index: 58 The absolute luminescence efficiency (AE) of a calcium fluoride (CaF2:Eu) single crystal doped with europium was studied using X-ray energies met in general radiography. A CaF2:Eu single crystal with dimensions of 10 × 10 × 10 mm3 was irradiated by X-rays. The emission light photon intensity of the CaF2:Eu sample was evaluated by measuring AE within the X-ray range from 50 to 130 kV. The ...
Known for
70 90 Kv | Optical Sensors | Imaging Systems | X-Ray Energies
KOL-Index: 57 The aim of the present work was to investigate the absolute luminescence efficiency (AE) of a lutetium aluminum Lu3Al5O12:Ce (LuAG:Ce) garnet, doped with cerium, combined with various microelectronic optical sensors. Two LuAG:Ce samples, with dimensions of 5 × 5 × 10 and 10 × 10 × 10 mm3 were examined. The light emitted by the crystals, was evaluated by performing measurements of the AE ...
Known for
Absolute Luminescence Efficiency | Lutetium Cerium Doped Crystals | Cmos Microelectronic Devices | Crystal Optical
KOL-Index: 51 OBJECTIVES: In this work, a simple technique to assess the image quality characteristics of the postprocessed image is developed and an easy to use figure of image quality (FIQ) is introduced. This FIQ characterizes images in terms of resolution and noise. In addition information capacity, defined within the context of Shannon's information theory, was used as an overall image quality index. ...
Known for
Medium Spatial Frequencies | Sharpen Edges Filter | Shannons Theory | Digital Mammographic Image
KOL-Index: 49 The purpose of the present study was to determine the Detective Quantum Efficiency (DQE) of CMOS imaging detectors, coupled to structured CsI:Tl and Gd2O2S:Tb scintillating screens, following the new IEC 62220-1-1:2015 International Standard. DQE was assessed after the experimental determination of the Modulation Transfer Function (MTF) and the Normalized Noise Power Spectrum (NNPS) in the ...
Known for
Dqe Cmos | 62220-1-12015 Methods | Additive Multiplicative Lag Effects | Optical Sensor
KOL-Index: 47 In this study, the light output of a zinc selenide activated with tellurium (ZnSe: Te) single crystal was measured for X-ray radiography applications. A cubic crystal (10 × 10 × 10 mm) was irradiated using X-rays with tube voltages from 50 to 130 kV. The resulting energy absorption efficiency, detective quantum efficiency, and absolute luminescence efficiency were compared to published data ...
Known for
Bismuth Germanium Oxide | Energy Absorption Efficiency | Equally Sized Gso | Optical Sensors

CHU La timone, Marseille, France Department of Medical Physics, School of Medicine, University of Patras, 15310, Rion, Greece

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