imaging X-ray detectors
Energy-resolved X-ray detectors: the future of diagnostic imaging
... These detectors are called “noise-free” because of this, and the only uncertainty is due to the statistical Poissonian fluctuation; so if we count N photons, the standard deviation σ = √ N and the relative error ...
13
Self Consistent Calibration of Detectors and Sources for Hard and Soft X Ray Diagnostics
... Usually X-ray tubes and imaging detectors are not absolutely calibrated by the ...developing detectors, optics and energy-resolved imaging devices, the knowledge of the absolute ...
12
Synthesis and characterization of Gd2O2 S: Tb3+ phosphor powder for X-ray imaging detectors
... dispersive x-ray (EDX) and particle induced x-ray emission ...of x-ray conversion efficiency for layers were investigated using 300 kVp X-ray tube in which the ...
7
A laser driven pulsed X-ray backscatter technique for enhanced penetrative imaging
... strong X-ray backscatter signal. It is possible to shield the detectors from this signal using a lead collimator, however, it could also be used as a reference X-ray scatter ...
7
Measurements of X ray selected AGN and novel superconducting X ray detectors
... optical imaging for this program was done with small field-of-view, single-CCD array ...multicolor imaging very time ...2001) imaging, we used Johnson-Cousins filters (B, V , R, and ...and ...
309
Determining The Detective Quantum Efficiency (DQE) Of X-Ray Detectors In Clinical Environments
... digital x-ray images. It acquires a x-ray image digitally by using phosphor plates that interact with an incident number of x-ray ...digital x-ray image that is ...
98
Image quality of energy-dependent approaches for x-ray angiography
... photon-counting detectors, and; 3) assess the potential of ESA and ERA by comparing the available iodine SNR with that of DSA including the eects of non-ideal detector ...stochastic x-ray interaction ...
252
Characterisation of Al0.52In0.48P mesa p-i-n photodiodes for X-ray photon counting spectroscopy
... hard X-rays, as well as -rays, is CdTe [9] CdTe and its related compounds ...radiation detectors and for this reason they have received considerable research attention [14]; spectroscopic CdZnTe and CdTe ...
24
Aspects of phase retrieval in x ray crystallography
... an X-ray tube and photographic plates lead by Friedrich and Knipping in 1912 [Friedrich et ...femtosecond X-ray crystallography (SFX) experiments using X-ray free-electron lasers ...
102
An investigation of the imaging performance of new digital x-ray detectors
... A review of the medical imaging literature reveals that different definitions of signal- to-noise ratio (SNR) are used. If a simple detection task is assumed, for example if an observer is required to say whether ...
222
Development of Hard X ray Imaging Detectors for the High Energy Focusing Telescope
... Development of hard X-ray imaging detectors for the High Energy Focusing Telescope Thesis by Chi Ming Hubert Chen In Partial Ful... llment of the Requirements for the Degree of Doctor of[r] ...
238
An investigation of the imaging performance of CCD based x-ray detectors for digital mammography
... The TDI image sensor is organised into an array of photosensitive elements consisting of n columns and m rows, with charges transferred along the columns (y direction). In a static situation, such an arrangement would ...
189
Inclusion of coherence in Monte Carlo models for simulation of x-ray phase contrast imaging
... contrast imaging methods based on electromagnetic wave coherence has increased significantly recently, particularly at X-ray ...Coherent imaging approaches are usually based on wave optics, ...
10
Context sensitive cardiac x-ray imaging: a machine vision approach to x-ray dose control
... cardiac x-ray imaging systems regulate their radiation output based on the thickness of the patient, to maintain an acceptable signal at the input of the x-ray ...
27
Chemical imaging analysis of the brain with X ray methods
... elemental imaging within biological structures, SR-based scanning techniques require that the properties of interest in the biological sample remain unchanged during the time frame of the measurement, which may be ...
37
Effects of X ray dose on rhizosphere studies using X ray computed tomography
... of X-ray dose on living samples is that organisms have highly variable responses to ...small X-ray exposures of ...high X- ray doses (33 Gy) had little or no observable effect on ...
8
Magnetic resonance imaging, X ray and dual X ray absorptiometry techniques for assessment and monitoring of knee osteoarthritis
... ]. In the ECHODIAH cohort, includ- ing 333 patients with hip OA followed prospectively for 3 years, we found that among a panel of 10 different biochemical markers of bone, cartilage and synovium activity, increased ...
41
New science exploration from XFEL: a new paradigm for structural visualisation of macromolecules
... The two final methods of note are x-ray cross correlation analysis (XCCA) and ankylography. XCCA is an idea that was initially anticipated in the 1970s, where it was proposed that if a number of molecules ...
215
Advanced Nanoscale Characterization of Cement Based Materials Using X-Ray Synchrotron Radiation: A Review
... soft X-ray illuminated examples from transmission X-ray microscope (TXM) beamline HZB-U41/1-TXM at Berliner Elektronenspeicherring-Gesellschaft fu¨r Syn- chrotronstrahlung (BESSY) in Berlin, ...
16
Gas micro-well track imaging detectors for gamma- ray astronomy
... The Advanced Compton Telescope 18 is envisioned as a medium-energy gamma-ray mission with a ∼ 100-fold increase in sensitivity over that of COMPTEL, the only Compton telescope that had enough sensitivity to make ...
13