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https://www.readbyqxmd.com/read/28222324/graph-based-segmentation-of-abnormal-nuclei-in-cervical-cytology
#1
Ling Zhang, Hui Kong, Shaoxiong Liu, Tianfu Wang, Siping Chen, Milan Sonka
A general method is reported for improving the segmentation of abnormal cell nuclei in cervical cytology images. In automation-assisted reading of cervical cytology, one of the essential steps is the segmentation of nuclei. Despite some progress, there is a need to improve the sensitivity, particularly the segmentation of abnormal nuclei. Our method starts with pre-segmenting the nucleus to define the coarse center and size of nucleus, which is used to construct a graph by image unfolding that maps ellipse-like border in the Cartesian coordinate system to lines in the polar coordinate system...
January 31, 2017: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
https://www.readbyqxmd.com/read/28220075/visual-equivalence-and-amodal-completion-in-cuttlefish
#2
I-Rong Lin, Chuan-Chin Chiao
Modern cephalopods are notably the most intelligent invertebrates and this is accompanied by keen vision. Despite extensive studies investigating the visual systems of cephalopods, little is known about their visual perception and object recognition. In the present study, we investigated the visual processing of the cuttlefish Sepia pharaonis, including visual equivalence and amodal completion. Cuttlefish were trained to discriminate images of shrimp and fish using the operant conditioning paradigm. After cuttlefish reached the learning criteria, a series of discrimination tasks were conducted...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28219833/statistical-appearance-models-based-on-probabilistic-correspondences
#3
Julia Krüger, Jan Ehrhardt, Heinz Handels
Model-based image analysis is indispensable in medical image processing. One key aspect of building statistical shape and appearance models is the determination of one-to-one correspondences in the training data set. At the same time, the identification of these correspondences is the most challenging part of such methods. In our earlier work, we developed an alternative method using correspondence probabilities instead of exact one-to-one correspondences for a statistical shape model (Hufnagel et al., 2008)...
February 7, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28219211/-value-of-ct-imaging-in-the-differentiation-of-gastric-leiomyomas-from-gastric-stromal-tumors
#4
J W Weng, J Wang, F Li, J L Xu, H J Hu
Objective: To explore the application value of CT imaging in differentiating gastric stromal tumors (GST) from gastric leiomyomas (GLMs). Methods: CT images of patients with GST (n=65) or GLMs (n=13, maximum diameter of tumor ≤5 cm) proved by surgery and pathology were retrospectively analyzed. The tumor size, location, contour, growth pattern, degree and pattern of enhancement, calcification, necrosis, surface ulceration, lymph nodes, and patient clinical data were evaluated by two independent reviewers...
February 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/28218375/retrieval-and-radiographic-analysis-of-the-contour-antiprotrusio-cage
#5
Jonathan M Vigdorchik, Richard S Yoon, Susannah L Gilbert, Joseph D Lipman, Mathias P Bostrom
INTRODUCTION: Acetabular reconstruction in the setting of severe bone loss or pelvic discontinuity remains a challenging problem. Multiple methods of treatment have been described including antiprotrusio cages (APCs). The objective of this study is to combine biomechanical analysis of retrieved APCs with radiographic and clinical data to determine which factors influence or predict APC failure. METHODS: 41 APCs were identified. Sequential radiographs were examined for cage and polyethylene cup abduction angles, change in centre of rotation, screw placement, progression of cage failure, and failure mechanism...
February 8, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28216825/surgical-excision-and-contoured-custom-made-splint-to-treat-helical-keloid
#6
Ankita Chamaria, Reuben Fernando De Sousa, Meena Ajay Aras, Kennedy Mascarenhas
Helical keloids are difficult to treat as surgical excision requires effective compression of the operative scar to prevent recurrence while retaining the contour and elasticity of the helix. The authors fabricated a conforming custom made post-operative splint from a commonly used dental material. Splints could be fabricated in both pre-operative and post-operative stage.
September 2016: Indian Journal of Plastic Surgery: Official Publication of the Association of Plastic Surgeons of India
https://www.readbyqxmd.com/read/28216768/competence-to-stand-trial-an-overview
#7
REVIEW
Steven K Hoge
The legal concept of competence to stand trial has ancient roots. The history of this legal construct in Anglo-Saxon law will be reviewed. A competent defendant is a requirement of the criminal justice system because it reflects interests related to the dignity of the process, the accuracy of adjudication, and respect for the autonomy of defendants. In the United States, legal decisions have established the contours of the requirements related to competent participation in adjudication. Forensic psychiatrists have operationalized the requirements for assessment purposes...
December 2016: Indian Journal of Psychiatry
https://www.readbyqxmd.com/read/28216520/examination-of-some-factors-affected-right-to-left-shunt-rate-and-the-normal-value-of-right-to-left-shunt-rate-in-lung-perfusion-scintigraphy
#8
Fumitoshi Nakamura, Masafumi Okabe, Takaaki Ono, Yousuke Sugimura, Naoko Muromoto, Ryou Suzuki, Taketoshi Okawada
PURPOSE: Diagnosis for right-to-left shunt was determined by the assessment of shunt-rate, which was obtained by using (99 m)Tc-macroaggregated albumin. However, it is difficult to diagnose right-to-left shunt, using the normal level of shunt-rate measured by using conventional methods. To solve this problem, we investigated ourselves the normal level of shunt-rate. METHOD: We researched 20 patients with pulmonary embolism, and they didn't have right-to-left shunt...
2017: Nihon Hoshasen Gijutsu Gakkai Zasshi
https://www.readbyqxmd.com/read/28213950/benchmark-performance-of-global-switching-versus-local-switching-for-trajectory-surface-hopping-molecular-dynamic-simulation-cis-trans-azobenzene-photoisomerization
#9
Ling Yue, Le Yu, Chao Xu, Yibo Lei, Yajun Liu, Chaoyuan Zhu
Newly developed global switching algorithm that does not require calculation of nonadiabatic coupling vector reduces computational cost significantly. However, there is a lack of extensive checking its accuracy for this simplest nonadiabatic molecular dynamic method in comparison with conventional Tully's fewest switches. It is very necessary to demonstrate how accurate global switching algorithm is. Extensive comparison between local and global switching on-the-fly trajectory surface hopping molecular dynamics is performed for cis-to-trans (800 sampling trajectories) and trans-to-cis (600 sampling trajectories) azobenzene photoisomerization at the OM2/MRCI level...
February 18, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28212087/dual-deep-network-for-visual-tracking
#10
Zhizhen Chi, Hongyang Li, Huchuan Lu, Minghsuan Yang
Visual tracking addresses the problem of identifying and localizing an unknown target in a video given the target specified by a bounding box in the first frame. In this paper, we propose a dual network to better utilize features among layers for visual tracking. It is observed that features in higher layers encode semantic context while its counterparts in lower layers are sensitive to discriminative appearance. Thus we exploit the hierarchical features in different layers of a deep model and design a dual structure to obtain better feature representation from various streams, which is rarely investigated in previous work...
February 15, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28209163/cardiovascular-magnetic-resonance-myocardial-feature-tracking-using-a-non-rigid-elastic-image-registration-algorithm-assessment-of-variability-in-a-real-life-clinical-setting
#11
Pedro Morais, Alberto Marchi, Julie A Bogaert, Tom Dresselaers, Brecht Heyde, Jan D'hooge, Jan Bogaert
BACKGROUND: Cardiovascular magnetic resonance myocardial feature tracking (CMR-FT) is a promising technique for quantification of myocardial strain from steady-state free precession (SSFP) cine images. We sought to determine the variability of CMR-FT using a non-rigid elastic registration algorithm recently available in a commercial software package (Segment, Medviso) in a real-life clinical setting. METHODS: Firstly, we studied the variability in a healthy volunteer who underwent 10 CMR studies over five consecutive days...
February 17, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/28208462/beyond-flory-theory-distribution-functions-for-interacting-lattice-trees
#12
Angelo Rosa, Ralf Everaers
While Flory theories [J. Isaacson and T. C. Lubensky, J. Physique Lett. 41, 469 (1980)JPSLBO0302-072X10.1051/jphyslet:019800041019046900; M. Daoud and J. F. Joanny, J. Physique 42, 1359 (1981)JOPQAG0302-073810.1051/jphys:0198100420100135900; A. M. Gutin et al., Macromolecules 26, 1293 (1993)MAMOBX0024-929710.1021/ma00058a016] provide an extremely useful framework for understanding the behavior of interacting, randomly branching polymers, the approach is inherently limited. Here we use a combination of scaling arguments and computer simulations to go beyond a Gaussian description...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28208133/how-truncating-are-truncating-languages-evidence-from-russian-and-german
#13
Tamara V Rathcke
Russian and German have pr eviously been described as 'truncating', or cutting off target frequencies of the phrase-final pitch trajectories when the time available for voicing is compromised. However, supporting evidence is rare and limited to only a few pitch categories. This paper reports a production study conducted to document pitch adjustments to linguistic materials, in which the amount of voicing available for the realization of a pitch pattern varies from relatively long to extremely short. Productions of nuclear H+L*, H* and L*+H pitch accents followed by a low boundary tone were investigated in the two languages...
2016: Phonetica
https://www.readbyqxmd.com/read/28208126/the-prosody-of-the-czech-discourse-marker-jasn%C3%A4-an-analysis-of-forms-and-functions
#14
Jan Volin, Lenka Weingartová, Oliver Niebuhr
Words like yeah, okay and (al)right are fairly unspecific in their lexical semantics, and not least for this reason there is a general tendency for them to occur with highly varied and expressive prosodic patterns across languages. Here we examine in depth the prosodic forms that express eight pragmatic functions of the Czech discourse marker jasně, including resignation, reassurance, surprise, indifference or impatience. Using a collection of 172 tokens from a corpus of scripted dialogues by 30 native speakers, we performed acoustic analyses, applied classification algorithms and solicited judgments from native listeners in a perceptual experiment...
2016: Phonetica
https://www.readbyqxmd.com/read/28208056/oral-rehabilitation-of-a-patient-with-ectodermal-dysplasia-treated-with-fresh-frozen-bone-allografts-and-computer-guided-implant-placement-a-clinical-case-report
#15
Carlo Maiorana, Pier Paolo Poli, Carlo Poggio, Paola Barbieri, Mario Beretta
Ectodermal dysplasia (ED) is an inherited disorder characterized by abnormality of ectodermally derived structures. A recurrent oral finding is oligodontia, which in turn leads to a severely hypotrophic alveolar process with typical knife-edge morphology and adverse ridge contours. This unfavorable anatomy can seriously hamper proper implant placement. Fresh-frozen bone (FFB) allografts recently have been proposed to augment the residual bone volume for implant placement purposes; however, scientific evidence concerning the use of FFB to treat ED patients is absent...
January 20, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28207470/improving-functional-and-aesthetic-outcomes-in-syndromic-patients-with-webbed-neck-deformity-utilizing-a-staged-endoscopic-assisted-approach-to-improve-the-posterior-hairline-and-decrease-scar-burden
#16
Emily Van Kouwenberg, Anmol S Chattha, Oluwaseun A Adetayo
INTRODUCTION: Webbed neck deformity (WND) can have significant functional and psychosocial impact on the developing child. Surgical correction can be challenging depending on the extent of the deformity, and patients often also have low posterior hairlines requiring simultaneous correction. Current surgical techniques include various methods of single-stage radical excision that often result in visible scar burden and residual deformity. There is currently no general consensus of which technique provides the best outcomes...
February 15, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28207238/real-time-monitoring-of-post-surgical-and-post-traumatic-eye-injuries-using-multi-layered-electrical-biosensor-chip
#17
Muhammad Shuja Khan, Santosh K Misra, Aaron Schwartz-Duval, Enrique A Daza, Fatemeh Ostadhossein, Matthew Bowman, Akshay Jain, Gina Taylor, Deana McDonagh, Leanne T Labriola, Dipanjan Pan
Lack of current techniques for the early monitoring of bleb leaks and other post-traumatic or post-surgical ocular injury has posed an unmet clinical need for the development of new techniques. Present evaluation techniques use either subjective or non-quantitative approaches. At present, there are no FDA approved ocular devices that can directly measure ascorbic acid (AA) concentration levels for both tear film (TF) and aqueous humor (AH) at point-of-care (POC) level. Toward this aim, we present a novel point-of-care (POC) quantitative assay, called the Ocular Biosensor device, which can be used to evaluate the integrity of the anterior surface of the eye by measuring the concentration of AA in TF and AH...
February 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28207065/should-a-preoperative-testicular-exam-be-mandatory-for-abdominal-body-contouring-patients
#18
Claire Fenoll, Samer Jabbour, Franck M Leclère, Rachel Pessis, Chakib Lkah, Michael Atlan
No abstract text is available yet for this article.
March 1, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/28206796/affect-from-mere-perception-illusory-contour-perception-feels-good
#19
Thorsten M Erle, Rolf Reber, Sascha Topolinski
Can affect be evoked by mere perception? Earlier work on processing fluency, which manipulated the dynamics of a running perceptual process, has shown that efficient processing can indeed trigger positive affect. The present work introduces a novel route by not manipulating the dynamics of an ongoing perceptual process, but by blocking or allowing the whole process in the first place. We used illusory contour perception as one very basic such process. In 5 experiments (total N = 422), participants briefly (≤100 ms) viewed stimuli that either allowed illusory contour perception, so-called Kanizsa shapes, or proximally identical control shapes that did not allow for this process to occur...
February 16, 2017: Emotion
https://www.readbyqxmd.com/read/28205589/optical-measurement-of-in-plane-waves-in-mechanical-metamaterials-through-digital-image-correlation
#20
Marshall Schaeffer, Giuseppe Trainiti, Massimo Ruzzene
We report on a Digital Image Correlation-based technique for the detection of in-plane elastic waves propagating in structural lattices. The experimental characterization of wave motion in lattice structures is currently of great interest due its relevance to the design of novel mechanical metamaterials with unique/unusual properties such as strongly directional behaviour, negative refractive indexes and topologically protected wave motion. Assessment of these functionalities often requires the detection of highly spatially resolved in-plane wavefields, which for reticulated or porous structural assemblies is an open challenge...
February 13, 2017: Scientific Reports
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