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- - 2014
On page 2272 (DOI: 10.1002/jcc.23752), Jorge Garza and co-workers report an efficient grid-based algorithm to find critical points on the electron density, which scales very well on CPUs and exhibits a high performance on GPUs. The convenience in using this new proposal is evidenced when non-nuclear attractors are found in ...
Scheres Sjors H W SH MRC Laboratory of Molecular Biology, Cambridge Biomedical Campus, Francis Crick Avenue, Cambridge CB2 0QH, UK. Electronic address: - - 2014
The selection of particles suitable for high-resolution cryo-EM structure determination from noisy micrographs may represent a tedious and time-consuming step. Here, a semi-automated particle selection procedure is presented that has been implemented within the open-source software RELION. At the heart of the procedure lies a fully CTF-corrected template-based picking algorithm, ...
Lupo Julian J Department of Psychology, The Brain and Mind Institute, Western University, 1151 Richmond St, London, Ontario N6A 3K7, Canada. Electronic address: - - 2014
Humans can detect whether an unstable object will fall or right itself, suggesting that the visual system can extract an object's center of mass (COM) and relate this to its base of support. While the COM can be approximated by its shape, this assumes uniform density. We created images of ...
Kong Xian X Department of Chemical and Environmental Engineering, University of California, Riverside, CA 92521, - - 2014
The differential capacitance of a model organic electrolyte in a cylindrical pore that is so narrow that the ions can form only a single file is studied by means of density functional theory (DFT). Kornyshev (2013), has studied this system and found the differential capacitance to have only a double ...
Luciani Valentina V Department of Chemical Engineering, Materials and Environment, Sapienza University of Rome, Via Eudossiana 18, 00184 Rome, - - 2014
Polyvinylchloride (PVC) is one of the most produced polymers in Europe, with a share of 11% in terms of mass (8 milliontons) of total polymer consumption, but in 2010 only 5% of the total PVC production came from recycled materials, where other polymer recycling achieves a level of 15% on ...
Bachmann B B Lawrence Livermore National Laboratory, Livermore, California 94550, - - 2014
We have developed an experimental platform for absolute equation of state measurements up to Gbar pressures on the National Ignition Facility (NIF) within the Fundamental Science Program. We use a symmetry-tuned hohlraum drive to launch a spherical shock wave into a solid CH sphere. Streaked radiography is the primary diagnostic ...
Chen Hui H Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550-9234, - - 2014
Adapting a concept developed for magnetic confinement fusion experiments, an imaging crystal spectrometer has been designed and tested for HED plasmas. The instrument uses a spherically bent quartz [211] crystal with radius of curvature of 490.8 mm. The instrument was tested at the Titan laser at Lawrence Livermore National Laboratory ...
MacDonald M J MJ Department of Atmospheric, Oceanic, and Space Sciences, University of Michigan, Ann Arbor, Michigan 48109, - - 2014
Experiments at the Trident Laser Facility have successfully demonstrated the use of x-ray fluorescence imaging (XRFI) to diagnose shocked carbonized resorcinol formaldehyde (CRF) foams doped with Ti. One laser beam created a shock wave in the doped foam. A second laser beam produced a flux of vanadium He-α x-rays, which ...
Yamasaki Jun J Research Center for Ultra-High Voltage Electron Microscopy, Osaka University, Ibaraki, Osaka 567-0047, Japan EcoTopia Science Institute, Nagoya University, Nagoya 464-8603, Japan - - 2014
Nowadays three-dimensional (3D) analyses of nanometer-sized and sub-micron-sized objects have been widely achieved by tomography in transmission electron microscopes (TEM). One of the next methodological targets should be quantitative 3D reconstructions in which not only the shape but also the internal density is correctly reproduced. This is, however, generally hindered ...
Strubbe Filip - - 2014
We use Fourier-Bessel Image Decomposition (FBID) of microscopy images to investigate the size, refractive index and 3-dimensional position of individual colloidal microspheres. With measurements of monodisperse polystyrene and poly(methyl methacrylate) particles we achieve a resolution of 1% in size and 0.2% in refractive index for a single image which is ...
Peltz Christian C Institut für Physik, Universität Rostock, 18051 Rostock, - - 2014
A complete time-resolved x-ray imaging experiment of laser heated solid-density hydrogen clusters is modeled by microscopic particle-in-cell simulations that account self-consistently for the microscopic cluster dynamics and electromagnetic wave evolution. A technique is developed to retrieve the anisotropic nanoplasma expansion from the elastic and inelastic x-ray scattering data. Our method ...
Ling Hangjian - - 2014
This paper deals with two issues affecting the application of digital holographic microscopy (DHM) for measuring the spatial distribution of particles in a dense suspension, namely discriminating between real and virtual images and accurate detection of the particle center. Previous methods to separate real and virtual fields have involved applications ...
Jiang Haibo H Oxford University, United - - 2014
Nanoscale secondary ion mass spectrometry (NanoSIMS) imaging makes it possible to visualize stable isotope-labeled lipids in cells and tissues at 50-nm lateral resolution. Here we report the use of NanoSIMS imaging to visualize lipids in mouse cells and tissues. After administering stable isotope-labeled fatty acids to mice by gavage, NanoSIMS ...
van den Berg Victor J VJ Department of Pediatrics, Division of Neonatology, Erasmus MC-Sophia, University Medical Center, Rotterdam, the - - 2014
Microcirculatory visualization has already been used to investigate buccal and cutaneous microcirculatory alterations in neonates. Still, the reproducibility of these microvascular measurements has never been studied in (premature) neonates. This study aimed to determine reproducibility of the microvascular vessel density in cutaneous and buccal Sidestream Dark Field (SDF) clips in ...
Koprowski Robert R Department of Biomedical Computer Systems, University of Silesia, Faculty of Computer Science and Materials Science, Institute of Computer Science, ul. B?dzińska 39, Sosnowiec 41-200, Poland. Electronic address: - - 2014
This study investigates the problem of automatic determination of the anterior eye chamber volume using previously published as well as new algorithms of image analysis and processing proposed by the authors. A new method for determining the anterior eye chamber volume that provides more accurate results has been proposed. The ...
Maram Jyotsna J Doheny Image Reading Center, Doheny Eye Institute , Los Angeles, CA , USA - - 2014
Abstract Purpose: To evaluate the reproducibility of anterior chamber angle measurements obtained by the Zeiss Visante anterior segment optical coherence tomography (AS-OCT). Methods: Twenty eyes from 20 normal subjects with open anterior chamber angles were studied. The anterior chamber angle was imaged using the Visante AS-OCT. The angle-opening distance (AOD ...
Yamazaki Natsuko N Department of Ophthalmology, Kanazawa University Graduate School of Medical Science, Kanazawa, - - 2014
To investigate in vivo corneal changes of radial keratoneuritis in early-stage Acanthamoeba keratitis (AK) using anterior-segment optical coherence tomography (AS-OCT). Single-center, prospective clinical study. Four eyes (4 patients with a mean age of 28.5 years) with early-stage AK showing radial keratoneuritis were included in this study. Definitive diagnosis was made by ...
Choi Hyuk Jin HJ *MD, PhD †MD Department of Ophthalmology, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Republic of Korea (HJC); Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Republic of Korea (HJC, S-ML, MKK, WRW); Department of Ophthalmology, Incheon Medical Center, Incheon, Republic of Korea (JYL); and Department of Ophthalmology, Eulji University Hospital, Daejeon, Republic of Korea - - 2014
To investigate and validate methods for measuring the radius of anterior scleral curvature using anterior segment optical coherence tomography images. Twenty-four volunteers were enrolled in this study. Anterior segment optical coherence tomography images, centered on horizontal/vertical limbus, including adjacent anterior sclera, were obtained in addition to conventional images centered on ...
Zhu Dexi D School of Optometry and Ophthalmology (D.Z., Y.S., L.L., Z.X., F.L., M.S.), Wenzhou Medical College, Wenzhou, Zhejiang, China; and Bascom Palmer Eye Institute (J.W.), Miller School of Medicine, University of Miami, Miami, - - 2014
To test accuracy and repeatability of a software algorithm that performs automatic biometry of the anterior segment of the human eye imaged with long scan depth optical coherence tomography (OCT). The ocular anterior segment imaging was performed with custom-built long scan depth OCT. An automatic software algorithm including boundary segmentation, ...
Morita Shunsuke S Department of Radiology, Showa University Fujigaoka Rehabilitation - - 2014
Radiographic examination of the anterior part of the shoulder includes routine anterior-posterior imaging that enables easy visualization of traumatic injuries and true anterior-posterior imaging that enables the visualization of intra-articular injuries. The X-ray incident angle of true anterior-posterior imaging is affected by physique and posture. However, in many reports, the ...
Kajikawa Shigehisa S Department of Respiratory Medicine, Nagoya University Graduate School of Medicine Nagoya, - - 2014
A 62-year-old man with an indicated chest radiographic abnormality was referred to our hospital for more thorough examinations. Endobronchial ultrasound-guided transbronchial needle aspiration was performed because of a mass at the left hilum. Endobronchial ultrasound images showed scattered high-density spots in a low echoic and mosaic density. The pathological findings ...
Young Richard M RM Departments of Neurological Surgery - - 2014
The object of this study was to demonstrate that a posterior-only approach for craniocervical junction pathology is feasible with intraoperative reduction. The authors reviewed 3 cases of craniocervical instability. All patients had craniocervical instability according to radiological imaging and various methods of measurement, with results outside the normal range. Posterior ...
Li Peng P University of Washington, Department of Bioengineering, Seattle, Washington - - 2014
ABSTRACT. We demonstrate an extended-imaging-range anterior-segment optical coherence tomography (eAS-OCT) system for the biometric assessment of full AS in human eye. This newly developed eAS-OCT operating at 1340-nm wavelength band is simultaneously capable of an imaging speed of 120 kHz A-line scan rate, an axial resolution of 7.2 μm, and an extended ...
De Maeseneer Michel M Department of Radiology, University Hospital Brussels, Brussels, Belgium, - - 2014
To describe the detailed ultrasound anatomy of the anterior, medial, and lateral aspects of the knee and present the ultrasound examination technique used. We present ultrasound using images of patients, volunteer subjects, and cadaveric specimens. We correlate ultrasound images with images of anatomical sections and dissections. The distal quadriceps tendon ...
Chao Chen-Cheng CC Department of Ophthalmology, Changhua Christian Hospital, Changhua, - - 2014
Pituitary apoplexy is a rare clinical emergency which results from hemorrhage or infarction in the pituitary gland. We present a 14-year-old girl with pituitary apoplexy and review the literature. Our patient experienced blurred vision, nausea, and headache. Her best-corrected visual acuity was 20/200 and 20/20. Confrontation test visual field testing ...
Pirris Stephen M SM Department of Neurosurgery, Mayo Clinic, Jacksonville, FL, - - 2014
Three dimensional (3D) image guidance has been used to improve the safety of complex spine surgeries, but its use has been limited in anterior cervical spine approaches. Twenty-two patients underwent complex anterior cervical spine surgeries in which 3D image guidance provided intraoperative assistance with the dissection, decompression and implant placement. ...
Shen Che-Chou - - 2014
Dual-band (DB) harmonic imaging is performed by transmitting and receiving at both fundamental band ( f0) and second-harmonic band (2f0). In our previous work, particular chirp excitation has been developed to increase the signal- to-noise ratio in DB harmonic imaging. However, spectral overlap between the second-order DB harmonic signals results ...
Tan Johnson C H JC *Division of Cornea and External Disease, Department of Ophthalmology and Visual Sciences, University of British Columbia, Vancouver, BC, Canada; †National Healthcare Group Eye Institute, Tan Tock Seng Hospital, Singapore, Singapore; ‡Department of Ophthalmology and Visual Sciences, Surgery Teaching and Research Wet Laboratory, University of British Columbia, Vancouver, BC, Canada; and §South Australian Institute of Ophthalmology, Royal Adelaide Hospital, Adelaide, - - 2014
The aim of this study was to describe a modification of the Miyake-Apple posterior video analysis for the simultaneous visualization of the anterior and posterior corneal surfaces during wet laboratory-based deep anterior lamellar keratoplasty (DALK). A human donor corneoscleral button was affixed to a microscope slide and placed onto a ...
Mastropasqua Rodolfo R Ophthalmology Unit, Department of Neurological, Neuropsychological, Morphological and Movement Sciences, University of Verona, 53593 Verona, - - 2014
Time domain (TD) and spectral domain (SD) optical coherence tomography (OCT) are cross-sectional, noncontact, high-resolution diagnostic modalities for posterior and anterior segment (AS) imaging. The AS-OCT provides tomographic imaging of the cornea, iris, lens, and anterior chamber (AC) angle in several ophthalmic diseases. In glaucoma, AS-OCT is utilized to evaluate ...
Shyagali Tarulatha R - - 2014
Segmental T loop is the most popular frictionless mechanics so far. This biomechanically sound system was designed for the Burstone's canine bracket, which can be extra inventory for the clinicians who want to practice the segmental T loop routinely. The present manuscript provides the alternate to Burstones canine bracket for ...
Krych Aaron J AJ Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, - - 2014
We present our technique for isolated arthroscopic rotator interval closure in the treatment of mild symptomatic glenohumeral instability in the absence of a labral tear. A careful history, physical examination, and imaging help to identify a select subset of atraumatic instability patients who may benefit from this procedure, and diagnostic ...
Thomas Benjamin J BJ Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, Florida, - - 2014
The development of optical coherence tomography (OCT) technology has helped to usher in a new era of in vivo diagnostic imaging of the eye. The utilization of OCT for imaging of the anterior segment and ocular surface has evolved from time-domain devices to spectral-domain devices with greater penetrance and resolution, providing ...
Sun Yong - - 2013
Abstract Purpose: To investigate the feasibility and practicality of real-time noninvasive imaging and measurement of ocular accommodation (0-5D with one diopter step) using dual-channel, dual-focus spectral domain optical coherence tomography (SD-OCT). Materials and Methods: A custom-built, dual-channel, dual-focus SD-OCT was used to image the anterior segment, including the cornea, iris, ...
Bunya Vatinee Y VY *Department of Ophthalmology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA; and †Department of Psychology, School of Arts and Sciences, University of Pennsylvania, Philadelphia, - - 2013
To describe a standardized technique for acquiring and viewing photographic images of eyelids, assess the reproducibility and validity of a grading protocol for signs of anterior blepharitis, and to explore whether the signs depend on the eyelid or the area of the eyelid assessed. Subjects with anterior blepharitis ranging from ...
Piñero David P - - 2013
Abstract Corneal and anterior segment imaging techniques have become a crucial tool in the clinical practice of ophthalmology, with a great variety of applications, such as corneal curvature and pachymetric analysis, detection of ectatic corneal conditions, anatomical study of the anterior segment prior to phakic intraocular lens implantation, or densitometric ...
Kumar Dhivya Ashok - - 2013
In this study, we report the ability of anterior segment optical coherence tomography (AS OCT) in imaging the sub-Tenon space and its clinical application. High-speed AS OCT (Carl Zeiss Meditec, Dublin, Calif., USA) was used to visualize the sub-Tenon space during sub-Tenon injection. The sub-Tenon spaces, Tenon thickness, conjunctiva-Tenon thickness, ...
Sharma Reetika - - 2013
Optical coherence tomography (OCT) is a cross-sectional, three-dimensional, high-resolution imaging modality that uses low coherence interferometry to achieve axial resolution in the range of 3-20 μm. Two OCT platforms have been developed: time domain (TD-OCT) and spectral (or Fourier) domain (SD/FD-OCT). Visante anterior segment OCT (Carl Zeiss Meditec) is a ...
Wilson V - - 2013
Hypopituitarism in the absence of a history of pituitary pathology or abnormal pituitary imaging is rare. To identify the cause of hypopituitarism in individuals in whom pituitary imaging was normal. Retrospective analysis of electronic patient record METHOD: A review of the pituitary function in the 506 patients on the Morriston ...
Kang Richard W - - 2013
The lead shoulder of a batter's swing can undergo tremendous forces, especially when a pitch is missed. Repetitive loads on the shoulder in this setting can lead to posterior instability also known as batter's shoulder. This article reviews the pathomechanics, clinical presentation, imaging, treatment options, and initial clinical results of ...
Alvarez Andres M - - 2013
Mobile image intensifiers are more readily used to assess acetabular cup placement when performing a total hip arthroplasty through a direct anterior approach. However, patient positioning affects pelvic tilt and rotation, which in turn requires proper C-arm fluoroscopy adjustments for image interpretation. The authors provide insight into the interpretation of ...
Kacem Faten Hadj FH Department of Endocrinology, HediChaker Hospital, 3029 Sfax, - - 2013
We report a 22-year-old woman who presented with asthenia, weight loss and hypotension in which extensive pituitary and adrenal investigations were diagnostic of isolated adrenocorticotropic hormone deficiency (IAD) of pituitary origin. Magnetic resonance imaging of the hypothalamus and pituitary showed a normal-sized pituitary, with no mass lesion. The diagnosis of ...
Smith Scott D - - 2013
To assess the published literature pertaining to the association between anterior segment imaging and gonioscopy and to determine whether such imaging aids in the diagnosis of primary angle closure (PAC). Literature searches of the PubMed and Cochrane Library databases were last conducted on July 6, 2011. The searches yielded 371 unique ...
Gispets Joan - - 2013
The purpose of the present study was to investigate two potential sources of variability of the traditional van Herick technique for temporal anterior chamber angle estimation, namely the need to compare the depth of the peripheral anterior chamber (PACD) with the thickness of the peripheral cornea (PCT), and the possible ...
Poddar Raju R University of California Davis, Vision Science and Advanced Retinal Imaging Laboratory (VSRI), Sacramento, California 95817, - - 2013
A high-speed (100 kHz A-scans/s) complex conjugate resolved 1 μm swept source optical coherence tomography (SS-OCT) system using coherence revival of the light source is suitable for dense three-dimensional (3-D) imaging of the anterior segment. The short acquisition time helps to minimize the influence of motion artifacts. The extended depth ...
Belin Michael W - - 2013
Scheimpflug cross-sectioning anterior segment imaging offers significant advantages over traditional placido based curvature analysis and ultrasound pachymetry. The accurate measurement of both the anterior and posterior corneal surfaces and the anterior and posterior lens allows for the creation of a three-dimensional reconstruction of the anterior segment. Changes on both the ...
Miyata Kazunori - - 2013
Purpose:  To examine improvement with the use of Scheimpflug imaging of the anterior and posterior corneal surfaces in the accuracy of ray-tracing intraocular lens (IOL) power calculation for normal cataractous eyes. Methods:  Prospective case series comprised 136 eyes of 136 consecutive patients who had undergone cataract surgeries. Scheimpflug imaging of ...
Kamagata Koji - - 2013
The pathological changes in Parkinson disease begin in the brainstem; reach the limbic system and ultimately spread to the cerebral cortex. In Parkinson disease (PD) patients, we evaluated the alteration of cingulate fibers, which comprise part of the limbic system, by using diffusional kurtosis imaging (DKI). Seventeen patients with PD ...
Davis M A - - 2013
Volumetric interpolated breath-hold examination (VIBE) is used for abdominal imaging as a fast and efficient modality. Evaluation of brain lesions using VIBE is not common and its use for the pituitary gland has not yet been addressed. Our goal was to compare coronal T1-weighted (T1W) and VIBE images in patients ...
Zhang Rui - - 2013
Three-dimensional measurement of the pharyngeal airway has been widely used, but the three-dimensional reconstruction of pharyngeal airway has been performed in various ways, especially during the anterior boundary demarcation of the nasopharyngeal airway and oropharyngeal airway. This would inevitably affect the measurement and lead to noncomparison between different studies. Our ...
Du Wenliang - - 2013
A new edge tracking method for cornea in optical coherence tomography anterior chamber images has been proposed in the paper. The new approach detects the edge of cornea outside the cornea first. Then, it fixes the detected edge, which follows the future knowledge of cornea, to make sure that only ...
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