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https://www.readbyqxmd.com/read/29667882/new-doppler-imaging-technique-for-assessing-angiogenesis-in-breast-tumors-correlation-with-immunohistochemically-analyzed-microvessels-density
#1
Sewha Kim, Hye Jin Lee, Kyung Hee Ko, Ah Young Park, Jieun Koh, Hae Kyoung Jung
Background Microvessel density (MVD) is associated with grade and prognosis in breast tumors. However, conventional color Doppler flow (CDF) imaging has been limited to represent MVD of breast tumors. Purpose To evaluate whether a new Doppler imaging technique (AngioPLUS) can represent MVD of breast tumors. Material and Methods The institutional review board approved this retrospective study, and patients' informed consent was waived. CDF and AngioPLUS were available in pathologically confirmed 55 breast tumors of 53 women...
January 1, 2018: Acta Radiologica
https://www.readbyqxmd.com/read/29667635/-the-application-of-the-biometriclal-dactylography-17-0-program-complex-for-the-digital-interpretation-of-the-finger-dermatoglyphic-features
#2
V N Zvyagin, V A Rakitin, E E Fomina
The objective of the present study was the development of the computer software for the scale-free interpretation of the finger dermatoglyphic features needed for the objective comprehensive evaluation of their principal characteristics in the digital terms. We have elaborated the program complex making it possible to address the following problems: thr formulation of the database of electronic copies of the finger print and toe print images in the family groups, the display of the finger print and toe print images on the screen, marking the points and lines for automated readout of digital angular and metric information or automated calculation of relative values, the formulation of the database of digital information about the papillary patterns on the fingers and toes in the family triplets (farther + mother + child) and its import into an Excel file...
2018: Sudebno-meditsinskaia Ekspertiza
https://www.readbyqxmd.com/read/29667606/applying-a-new-computer-aided-detection-scheme-generated-imaging-marker-to-predict-short-term-breast-cancer-risk
#3
Seyedehnafiseh Mirniaharikandehei, Alan B Hollingsworth, Bhavika Patel, Morteza Heidari, Hong Liu, Bin Zheng
This study aims to investigate the feasibility of identifying a new quantitative imaging marker based on false-positives generated by computer-aided detection (CAD) scheme to help predict short-term breast cancer risk. An image dataset including four view mammograms acquired from 1,044 women was retrospectively assembled. All mammograms were originally interpreted as negative by radiologists. In the next subsequent mammography screening, 402 women were diagnosed with breast cancer and 642 remained negative...
April 18, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29667227/effects-of-knockout-of-the-receptor-for-advanced-glycation-end-products-on-bone-mineral-density-and-synovitis-in-mice-with-intra-articular-fractures
#4
Dongrim Seol, Yuki Tochigi, Ashley M Bogner, Ino Song, Douglas C Fredericks, Gail L Kurriger, Sonja M Smith, Jessica E Goetz, Joseph A Buckwalter, James A Martin
Our group employed the mouse closed intra-articular fracture (IAF) model to test the hypothesis that the innate immune system plays a role in initiating synovitis and post-traumatic osteoarthritis (PTOA) in fractured joints. A transgenic strategy featuring knockout of the receptor for advanced glycation end-products (RAGE -/- ) was pursued. The 42 and 84 mJ impacts used to create fractures were in the range previously reported to cause PTOA at 60 days post-fracture. MicroCT (µCT) was used to assess fracture patterns and epiphyseal and metaphyseal bone loss at 30 and 60 days post-fracture...
April 17, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29666958/ictal-interictal-continuum-patterns
#5
REVIEW
Gamaleldin M Osman, Davi F Araújo, Carolina B Maciel
PURPOSE OF REVIEW: To present data available on the epidemiology and significance of rhythmic and periodic patterns that lie on the ictal interictal continuum and propose an algorithm for the clinical approach to patients exhibiting these patterns. RECENT FINDINGS: There is accumulating evidence on the prognostic implications of various rhythmic and periodic patterns in the critically ill population. These patterns are not only associated with increased seizure risk but have also been associated with worse outcome and increased long-term risk of epilepsy in recent studies...
April 18, 2018: Current Treatment Options in Neurology
https://www.readbyqxmd.com/read/29666881/pathological-factors-contributing-to-crossed-cerebellar-diaschisis-in-cerebral-gliomas-a-study-combining-perfusion-diffusion-and-structural-mr-imaging
#6
Xiaoxue Liu, Jianrui Li, Qiang Xu, Dante Mantini, Peng Wang, Yuan Xie, Yifei Weng, Chiyuan Ma, Kangjian Sun, Zhiqiang Zhang, Guangming Lu
PURPOSE: To investigate imaging features of crossed cerebellar diaschisis (CCD) in cerebral gliomas, and its underlying pathophysiological mechanisms. METHODS: Thirty-three pre-surgical patients with cerebral gliomas and 33 healthy controls underwent arterial spin-labeling, diffusion tensor imaging, and high-resolution T1-weighted imaging using MRI, in order to estimate cerebral blood flow (CBF), white matter integrity, and lesion volume, respectively. Asymmetry indices of CBF in the cerebellum were used for evaluating the level of CCD in the patients...
April 17, 2018: Neuroradiology
https://www.readbyqxmd.com/read/29666663/scenario-screen-a-dynamic-and-context-dependent-p300-stimulator-screen-aimed-at-wheelchair-navigation-control
#7
Omar Piña-Ramirez, Raquel Valdes-Cristerna, Oscar Yanez-Suarez
P300 spellers have been widely modified to implement nonspelling tasks. In this work, we propose a "scenario" stimulation screen that is a P300 speller variation to command a wheelchair. Our approach utilized a stimulation screen with an image background (scenario snapshot for a wheelchair) and stimulation markers arranged asymmetrically over relevant landmarks, such as suitable paths, doors, windows, and wall signs. Other scenario stimulation screen features were green/blue stimulation marker color scheme, variable Interstimulus Interval, single marker stimulus mode, and optimized stimulus sequence generator...
2018: Computational and Mathematical Methods in Medicine
https://www.readbyqxmd.com/read/29666413/texture-analysis-and-support-vector-machine-assisted-diffusional-kurtosis-imaging-may-allow-in-vivo-gliomas-grading-and-idh-mutation-status-prediction-a-preliminary-study
#8
Sotirios Bisdas, Haocheng Shen, Steffi Thust, Vasileios Katsaros, George Stranjalis, Christos Boskos, Sebastian Brandner, Jianguo Zhang
We sought to investigate, whether texture analysis of diffusional kurtosis imaging (DKI) enhanced by support vector machine (SVM) analysis may provide biomarkers for gliomas staging and detection of the IDH mutation. First-order statistics and texture feature extraction were performed in 37 patients on both conventional (FLAIR) and mean diffusional kurtosis (MDK) images and recursive feature elimination (RFE) methodology based on SVM was employed to select the most discriminative diagnostic biomarkers. The first-order statistics demonstrated significantly lower MDK values in the IDH-mutant tumors...
April 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29666265/an-explainable-deep-machine-vision-framework-for-plant-stress-phenotyping
#9
Sambuddha Ghosal, David Blystone, Asheesh K Singh, Baskar Ganapathysubramanian, Arti Singh, Soumik Sarkar
Current approaches for accurate identification, classification, and quantification of biotic and abiotic stresses in crop research and production are predominantly visual and require specialized training. However, such techniques are hindered by subjectivity resulting from inter- and intrarater cognitive variability. This translates to erroneous decisions and a significant waste of resources. Here, we demonstrate a machine learning framework's ability to identify and classify a diverse set of foliar stresses in soybean [ Glycine max (L...
April 16, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29666204/mapping-the-contribution-and-strategic-distribution-patterns-of-neuroimaging-features-of-small-vessel-disease-in-poststroke-cognitive-impairment
#10
Lin Shi, Lei Zhao, Fu Ki Yeung, Shun Yiu Wong, Ronald K T Chan, Ming Fai Tse, Sze Chun Chan, Yee Ching Kwong, Ka Chun Li, Kai Liu, Jill M Abrigo, Alexander Y L Lau, Adrian Wong, Bonnie Y K Lam, Thomas W H Leung, Jianhui Fu, Winnie C W Chu, Vincent C T Mok
OBJECTIVES: Individual neuroimaging features of small vessel disease (SVD) have been reported to influence poststroke cognition. This study aimed to investigate the joint contribution and strategic distribution patterns of multiple types of SVD imaging features in poststroke cognitive impairment. METHODS: We studied 145 first-ever ischaemic stroke patients with MRI and Montreal Cognitive Assessment (MoCA) examined at baseline. The local burdens of acute ischaemic lesion (AIL), white matter hyperintensity, lacune, enlarged perivascular space and cross-sectional atrophy were quantified and entered into support vector regression (SVR) models to associate with the global and domain scores of MoCA...
April 17, 2018: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/29666047/comparison-of-magnetic-resonance-angiography-and-18-f-fluorodeoxyglucose-positron-emission-tomography-in-large-vessel-vasculitis
#11
Kaitlin A Quinn, Mark A Ahlman, Ashkan A Malayeri, Jamie Marko, Ali Cahid Civelek, Joel S Rosenblum, Armin A Bagheri, Peter A Merkel, Elaine Novakovich, Peter C Grayson
OBJECTIVES: To assess agreement between interpretation of magnetic resonance angiography (MRA) and 18 F-fluorodeoxyglucose positron emission tomography (PET) for disease extent and disease activity in large-vessel vasculitis (LVV) and determine associations between imaging and clinical assessments. METHODS: Patients with giant cell arteritis (GCA), Takayasu's arteritis (TAK) and comparators were recruited into a prospective, observational cohort. Imaging and clinical assessments were performed concurrently, blinded to each other...
April 17, 2018: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/29665789/idiopathic-basal-ganglia-calcification-associated-with-cerebral-micro-infarcts-a-case-report
#12
Takuma Nishimoto, Fumiaki Oka, Hideyuki Ishihara, Mizuya Shinoyama, Michiyasu Suzuki
BACKGROUND: Idiopathic basal ganglia calcification (IBGC) is a rare neurodegenerative disorder characterized by symmetric intracranial calcium deposition. We report a patient with IBGC associated with cerebral infarction due to impairment of cerebrovascular reactivity based on single-photon emission computed tomography (SPECT) with acetazolamide challenge. CASE PRESENTATION: A 66-year-old male presented with right conjugate deviation, right hemiparesis and total aphasia due to a convulsive seizure...
April 17, 2018: BMC Neurology
https://www.readbyqxmd.com/read/29665710/significance-of-incidental-intra-articular-and-peri-articular-fdg-avid-foci-on-pet-ct
#13
Wayne B Cohen-Levy, Juan Pretell-Mazzini, Adam D Singer, Ty Subhawong, Dylan N Greif, Jean Jose
Background Positron emission tomography/computed tomography (PET/CT) is a useful imaging adjunct in patients with sarcoma. Intra-articular and peri-articular 18F-fluoro-2-deoxy-D-glucose (FDG) avid lesions are often discovered incidentally. Purpose To describe the etiology, appearance, and standardized uptake values (SUV) of incidentally detected FDG avid intra-articular and peri-articular foci in patients with sarcoma. Material and Methods The institutional sarcoma database between November 2011 and November 2016 was retrospectively reviewed...
January 1, 2018: Acta Radiologica
https://www.readbyqxmd.com/read/29665588/current-technique-and-application-of-percutaneous-cryotherapy
#14
Andreas H Mahnken, Alexander Marc König, Jens Holger Figiel
PURPOSE:  Local ablative therapies have become an established treatment option in interventional oncology. Radiofrequency ablation (RFA) and microwave ablation (MWA) are a standard of care in the treatment of hepatocellular carcinoma (HCC). Currently, there is an increasing interest in cryotherapy, one of the oldest ablation techniques. It has some unique characteristics with regard to technology and mechanism of action. MATERIALS AND METHODS:  A systematic literature search using the terms cryotherapy, cryosurgery and cryoablation was performed...
April 17, 2018: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/29665578/brain-morphology-cognition-and-%C3%AE-amyloid-in-older-adults-with-superior-memory-performance
#15
Theresa M Harrison, Anne Maass, Suzanne L Baker, William J Jagust
The mechanisms underlying superior cognitive performance in some older adults are poorly understood. We used a multimodal approach to characterize imaging and cognitive features of 26 successful agers (SA; defined by superior episodic memory ability) and 103 typical older adults. Cortical thickness was greater in multiple regions in SA including right anterior cingulate and prefrontal cortex and was related to baseline memory performance. Similarly, hippocampal volume was greater in SA and associated with baseline memory...
March 27, 2018: Neurobiology of Aging
https://www.readbyqxmd.com/read/29665537/mass-detection-in-digital-breast-tomosynthesis-data-using-convolutional-neural-networks-and-multiple-instance-learning
#16
Mina Yousefi, Adam Krzyżak, Ching Y Suen
Digital breast tomosynthesis (DBT) was developed in the field of breast cancer screening as a new tomographic technique to minimize the limitations of conventional digital mammography breast screening methods. A computer-aided detection (CAD) framework for mass detection in DBT has been developed and is described in this paper. The proposed framework operates on a set of two-dimensional (2D) slices. With plane-to-plane analysis on corresponding 2D slices from each DBT, it automatically learns complex patterns of 2D slices through a deep convolutional neural network (DCNN)...
April 12, 2018: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29665292/double-targeting-explosible-nanofirework-for-tumor-ignition-to-guide-tumor-depth-photothermal-therapy
#17
Ming-Kang Zhang, Xiao-Gang Wang, Jing-Yi Zhu, Miao-Deng Liu, Chu-Xin Li, Jun Feng, Xian-Zheng Zhang
This study reports a double-targeting "nanofirework" for tumor-ignited imaging to guide effective tumor-depth photothermal therapy (PTT). Typically, ≈30 nm upconversion nanoparticles (UCNP) are enveloped with a hybrid corona composed of ≈4 nm CuS tethered hyaluronic acid (CuS-HA). The HA corona provides active tumor-targeted functionality together with excellent stability and improved biocompatibility. The dimension of UCNP@CuS-HA is specifically set within the optimal size window for passive tumor-targeting effect, demonstrating significant contributions to both the in vivo prolonged circulation duration and the enhanced size-dependent tumor accumulation compared with ultrasmall CuS nanoparticles...
April 17, 2018: Small
https://www.readbyqxmd.com/read/29665123/pilot-study-on-the-correlation-between-dermoscopic-patterns-and-fluorescence-in-situ-hybridization-findings-using-whole-slide-digital-imaging-for-acral-volar-melanocytic-lesions
#18
Dai Ogata, Eiichi Arai, Yoshiya Goto, Tetsuya Tsuchida
Dermoscopic evaluation of acral volar skin is helpful in differentiating malignant melanomas (MM) from benign melanocytic nevi. However, histological diagnosis remains difficult because sufficient evidence of histopathological changes to establish a diagnosis of MM are not easily obtained. The aim of the present study was to evaluate the effective use of fluorescence in situ hybridization (FISH) in the diagnosis of acral volar melanocytic lesions, and to determine whether acral volar melanocytic lesions show characteristic molecular biological features of malignant melanoma via FISH...
April 17, 2018: Journal of Dermatology
https://www.readbyqxmd.com/read/29665042/neural-tube-defects-in-embryonic-life-lessons-learned-from-340-early-pregnancy-failures
#19
David R Hartge, Michael Gembicki, Achim Rody, Jan Weichert
OBJECTIVES: The aim of this study was to evaluate the feasibility of sonographic assessment of the embryonic/fetal neural tube in nonviable pregnancies and to determine the defect incidence. METHODS: Prospective analysis of transvaginally acquired 3-dimensional (3D) multiplanar and 3D surface-rendered volume sets of 340 cases of missed abortion between March 2010 and September 2015 was performed. Data regarding karyotype and postmortem examination as well as demographic features and the outcomes of subsequent pregnancies were evaluated...
April 17, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29665034/metabolic-features-of-nonalcoholic-fatty-liver-nafl-in-obese-adolescents-findings-from-a-multi-ethnic-cohort
#20
Domenico Tricò, Sonia Caprio, Giuseppina Rosaria Umano, Bridget Pierpont, Jessica Nouws, Alfonso Galderisi, Grace Kim, Mariana M Mata, Nicola Santoro
AIMS: We conducted a prospective study in a large, multiethnic cohort of obese adolescents to characterize clinical and genetic features associated with pediatric Non-Alcoholic Fatty Liver (NAFL), the most common cause of chronic liver disease in youth. METHODS: A total of 503 obese adolescents were enrolled, including 191 (38.0%) Caucasians, 134 (26.6%) African Americans, and 178 (35.4%) Hispanics. Participants underwent abdominal magnetic resonance imaging (MRI) to quantify hepatic fat content, an oral glucose tolerance test to assess glucose tolerance and insulin sensitivity, and the genotyping of three SNPs associated with fatty liver (PNPLA3 rs738409, GCKR rs1260326, and TM6SF2 rs58542926)...
April 17, 2018: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
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