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Andrew Kruegel et al.
Rapid communications in mass spectrometry : RCM, 27(7), 763-766 (2013-03-16)
The utility of elemental sulfur as a matrix for inorganic salts such as CsI, AgI, and KI was investigated because the conventional matrices deployed to generate gaseous ions from organic compounds, upon irradiation with a laser beam, are not suitable
Riddhiman Sarkar et al.
Journal of magnetic resonance (San Diego, Calif. : 1997), 212(2), 460-463 (2011-09-13)
The accurate temperature measurement of solid samples under magic-angle spinning (MAS) is difficult in the cryogenic regime. It has been demonstrated by Thurber et al. (J. Magn. Reson., 196 (2009) 84-87) [10] that the temperature dependent spin-lattice relaxation time constant
N W Marshall
Physics in medicine and biology, 54(9), 2845-2861 (2009-04-23)
This paper presents detective quantum efficiency (DQE) data measured for a range of x-ray beam qualities for two full-field digital mammography (FFDM) systems: a caesium iodide (CsI) detector-based unit and a system designed around an amorphous selenium (a-Se) x-ray detector.
Iain Campuzano et al.
Methods in molecular biology (Clifton, N.J.), 790, 57-70 (2011-09-29)
The introduction of electrospray ionization (ESI) and in particular nano-electrospray (nESI) has enabled the routine mass spectrometric (MS) analysis of large protein complexes in native aqueous buffers. Time-of-flight (ToF) mass spectrometers, in particular the hybrid quadrupole time-of-flight (Q-ToF) instruments, are
Julien Marcoux et al.
Protein science : a publication of the Protein Society, 24(8), 1210-1223 (2015-02-20)
Antibody-drug conjugates (ADCs) are biochemotherapeutics consisting of a cytotoxic chemical drug linked covalently to a monoclonal antibody. Two main classes of ADCs, namely cysteine and lysine conjugates, are currently available on the market or involved in clinical trials. The complex
Fabian D J Brunner et al.
Optics express, 17(23), 20684-20693 (2009-12-10)
We present a versatile terahertz time-domain spectrometer which allows reflection measurements at normal incidence and double pass transmission measurements in a single experimental setup. Two different modes for transmission measurements are demonstrated for precise measurements of transparent high or low
G Hajdok et al.
Medical physics, 35(7), 3180-3193 (2008-08-14)
The practice of diagnostic x-ray imaging has been transformed with the emergence of digital detector technology. Although digital systems offer many practical advantages over conventional film-based systems, their spatial resolution performance can be a limitation. The authors present a Monte
M Manohari et al.
Radiation protection dosimetry, 144(1-4), 427-432 (2010-11-04)
A phoswich detector, housed inside a low background steel room, coupled with a state-of-art pulse shape discrimination (PSD) electronics is recently established at Radiological Safety Division of IGCAR for in vivo monitoring of actinides. The various parameters of PSD electronics
Melanie Freed et al.
Medical physics, 36(11), 4944-4956 (2009-12-10)
MANTIS is a Monte Carlo code developed for the detailed simulation of columnar CsI scintillator screens in x-ray imaging systems. Validation of this code is needed to provide a reliable and valuable tool for system optimization and accurate reconstructions for
N W Marshall et al.
Physics in medicine and biology, 56(4), 979-999 (2011-01-21)
This paper describes a digital radiography (DR) quality control protocol for DR detectors from the forthcoming report from the Institute of Physics and Engineering in Medicine (IPEM). The protocol was applied to a group of six identical caesium iodide (CsI)
C D Arvanitis et al.
Medical physics, 36(1), 116-126 (2009-02-25)
Complementary metal-oxide-semiconductors (CMOS) active pixel sensors can be optically coupled to CsI:Tl phosphors forming a indirect active pixel flat panel imager (APFPI) for high performance medical imaging. The aim of this work is to determine the x-ray imaging capabilities of
Diksha Sharma et al.
Medical physics, 40(3), 031907-031907 (2013-03-08)
hybridMANTIS is a Monte Carlo package for modeling indirect x-ray imagers using columnar geometry based on a hybrid concept that maximizes the utilization of available CPU and graphics processing unit processors in a workstation. The authors compare hybridMANTIS x-ray response
Ayushi et al.
Journal of chromatographic science, 50(1), 81-83 (2012-02-01)
In the present study an ion chromatographic method based on matrix elimination has been developed for the determination of anionic impurities in high purity cesium iodide crystals. The presence of impurities has a detrimental effect on the characteristics of detectors
S Baccouche et al.
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine, 70(1), 227-232 (2011-08-20)
Gamma-ray measurements in terrestrial/environmental samples require the use of high efficient detectors because of the low level of the radionuclide activity concentrations in the samples; thus scintillators are suitable for this purpose. Two scintillation detectors were studied in this work;
Aldo Badano et al.
IEEE transactions on medical imaging, 28(5), 696-702 (2009-03-11)
We quantify the variation in resolution due to anisotropy caused by oblique X-ray incidence in indirect flat-panel detectors for computed tomography breast imaging systems. We consider a geometry and detector type utilized in breast computed tomography (CT) systems currently being
D Nocetti et al.
Radiation protection dosimetry, 165(1-4), 386-391 (2015-03-31)
The aim of this study was to compare the performance of three digital X-ray systems [one flat-panel (DR) and two computed radiography (CR)] for chest radiography in terms of the entrance surface air kerma (ESAK) delivered to a polymethyl methacrylate
Kimberley J Davis et al.
Dalton transactions (Cambridge, England : 2003), 44(7), 3136-3150 (2015-01-13)
As part of a program of preparing metal complexes which exhibit unique affinities towards different DNA structures, we have synthesised the novel Schiff base complex N,N'-bis-4-(hydroxysalicylidine)meso-diphenylethylenediaminenickel(ii) (), via the reaction of meso-1,2-diphenylethylenediamine and 2,4-dihydroxybenzaldehyde. This compound was subsequently reacted with
D Leone et al.
Radiation protection dosimetry, 144(1-4), 402-406 (2010-12-25)
The in vivo monitoring Lab at KIT uses two phoswich detectors for routine lung counting. A simplified model of one of them has been implemented in the two Monte Carlo codes EGSnrc and MCNPX. The active part of the detector
K J Tielrooij et al.
The journal of physical chemistry. B, 115(43), 12638-12647 (2011-09-10)
We study the reorientation dynamics of water molecules around ions using terahertz dielectric relaxation spectroscopy and polarization-resolved femtosecond infrared pump-probe spectroscopy. The results are discussed in relation to the ion-specific Hofmeister series and the concomitant "structure-making" and "structure-breaking" effects of
Markus Völk et al.
European radiology, 14(5), 827-834 (2004-02-18)
The two most frequently performed diagnostic X-ray examinations are those of the extremities and of the chest. Thus, dose reduction in the field of conventional skeletal and chest radiography is an important issue and there is a need to reduce
Tianran Chen et al.
Physical chemistry chemical physics : PCCP, 17(46), 31278-31286 (2015-11-10)
Methylammonium lead iodide (CH3NH3PbI3) based solar cells have shown impressive power conversion efficiencies of above 20%. However, the microscopic mechanism of the high photovoltaic performance is yet to be fully understood. Particularly, the dynamics of CH3NH3(+) cations and their impact
Makhsud I Saidaminov et al.
Nature materials, 19(4), 412-418 (2020-02-12)
The composition of perovskite has been optimized combinatorially such that it often contains six components (AxByC1-x-yPbXzY3-z) in state-of-art perovskite solar cells. Questions remain regarding the precise role of each component, and the lack of a mechanistic explanation limits the practical
Tetsuro Matsumoto et al.
Radiation protection dosimetry, 146(1-3), 92-95 (2011-04-29)
A small-sized thermal neutron detector based on a (6)Li-glass scintillator and a plastic optical fibre has been developed for precise measurement of the spatial distribution of thermal neutron fluence rate. This detector was tested in experiments performed using thermal neutrons.
Khadijeh Rajabi
Journal of the American Society for Mass Spectrometry, 26(1), 71-82 (2014-10-17)
A pulsed hydrogen/deuterium exchange (HDX) method has been developed for rapid monitoring of the exchange kinetics of protein ions with D2O a few milliseconds after electrospray ionization (ESI). The stepwise gradual evolution of HDX of multiply charged protein ions was
Melanie Freed et al.
Medical physics, 37(6), 2593-2605 (2010-07-17)
Accurate models of detector blur are crucial for performing meaningful optimizations of three-dimensional (3D) x-ray breast imaging systems as well as for developing reconstruction algorithms that faithfully reproduce the imaged object anatomy. So far, x-ray detector blur has either been
H Awad et al.
Rapid communications in mass spectrometry : RCM, 29(14), 1307-1316 (2015-09-26)
Curcumin analogues are antineoplastic agents, designed based on the structure of the spice turmeric with structural modifications aiming at enhancing potency. The goal is to identify the common tandem mass spectrometric (MS/MS) behavior of 13 novel curcumin analogues. Such knowledge
Nobuhiro Yasui et al.
Advanced materials (Deerfield Beach, Fla.), 24(40), 5464-5469 (2012-08-14)
Alkali halide systems that function as phase-separated scintillators (PSSs) with light-guiding properties are sucessfully created. Furthermore, it is the matrix phases of the PSSs which display the light-guiding properties. CsI-NaCl:Tl is a practical material pair because of its high pixel
Madhurima Sharma et al.
European journal of radiology, 84(9), 1820-1827 (2015-06-14)
To assess the role of digital tomosynthesis (DTS) and dual energy subtraction digital radiography (DES-DR) in detection of parenchymal lesions in active pulmonary tuberculosis (TB) and to compare them with digital radiography (DR). This prospective study was approved by our
Khalid Mohammed Khan et al.
Natural product research, 22(14), 1264-1269 (2008-10-22)
In situ generation of hydrogen iodide from cesium iodide/methanesulfonic acid was found to be an attractive reagent combination for the conversion of alkyl, allyl, and benzyl alcohols to their corresponding iodides under mild conditions. The method is compared with that
Chao-Jen Lai et al.
Medical physics, 42(6), 3063-3075 (2015-07-02)
Cone beam breast computed tomography (breast CT) with true three-dimensional, nearly isotropic spatial resolution has been developed and investigated over the past decade to overcome the problem of lesions overlapping with breast anatomical structures on two-dimensional mammographic images. However, the
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