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https://www.readbyqxmd.com/read/29223329/the-impact-of-psychosis-on-brain-anatomy-in-bipolar-disorder-a-structural-mri-study
#1
A Carlo Altamura, Eleonora Maggioni, Taj Dhanoa, Valentina Ciappolino, Riccardo A Paoli, Laura Cremaschi, Cecilia Prunas, Giulia Orsenigo, Elisabetta Caletti, Claudia M Cinnante, Fabio M Triulzi, Bernardo Dell'Osso, Lakshmi Yatham, Paolo Brambilla
BACKGROUND: Bipolar disorder (BD) is a major psychiatric illness characterized by heterogeneous symptoms including psychotic features. Up until now, neuroimaging studies investigating cerebral morphology in patients with BD have underestimated the potential impact of psychosis on brain anatomy in BD patients. In this regard, psychotic and non-psychotic BD may represent biologically different subtypes of the disorder, being possibly associated with specific cerebral features. METHODS: In the present study, magnetic resonance imaging (MRI) at 3T was used to identify the neuroanatomical correlates of psychosis in an International sample of BD patients...
November 29, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29222685/prediction-of-outcome-using-pretreatment-18f-fdg-pet-ct-and-mri-radiomics-in-locally-advanced-cervical-cancer-treated-with-chemoradiotherapy
#2
François Lucia, Dimitris Visvikis, Marie-Charlotte Desseroit, Omar Miranda, Jean-Pierre Malhaire, Philippe Robin, Olivier Pradier, Mathieu Hatt, Ulrike Schick
PURPOSE: The aim of this study is to determine if radiomics features from 18fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) and magnetic resonance imaging (MRI) images could contribute to prognoses in cervical cancer. METHODS: One hundred and two patients (69 for training and 33 for testing) with locally advanced cervical cancer (LACC) receiving chemoradiotherapy (CRT) from 08/2010 to 12/2016 were enrolled in this study. 18F-FDG PET/CT and MRI examination [T1, T2, T1C, diffusion-weighted imaging (DWI)] were performed for each patient before CRT...
December 9, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29222581/fractures-in-children-with-newly-diagnosed-hepatoblastoma
#3
Alexander J Towbin, Fernanda D C Braojos Braga, Bin Zhang, James I Geller, Greg M Tiao, Daniel J Podberesky
BACKGROUND: Hepatoblastoma is the most common primary hepatic malignancy in children. We have recently noticed an increased incidence of unsuspected fractures in children with newly diagnosed hepatoblastoma. This association has been suggested in the past, but the incidence and pathophysiology remain uncertain. OBJECTIVE: To define the incidence and imaging features of fractures in children with newly diagnosed hepatoblastoma. MATERIALS AND METHODS: We searched the oncology database and the radiology picture archiving and communication system of our large tertiary care children's hospital between January 2000 and August 2013 for all patients who presented to our institution with newly diagnosed hepatoblastoma...
December 8, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/29222537/the-effects-of-palate-features-and-glossectomy-surgery-on-s-production
#4
Dana L Grimm, Maureen Stone, Jonghye Woo, Junghoon Lee, Jun-Hyuk Hwang, Gary E Bedrosian, Jerry L Prince
Purpose: The aims of this article were to determine the effects of hard palate morphology and glossectomy surgery on tongue position and shape during /s/ for patients with small tumors. The first expectation was that laminal /s/ would be more prevalent in patients, than apical, due to reduced tongue tip control after surgery. The second was that patients would hold the tongue more anteriorly than controls to compensate for reduced tongue mass. Method: Three-dimensional tongue volumes were calculated from magnetic resonance imaging for the whole tongue and the portion anterior to the first molar during the /s/ in /əsuk/ for 21 controls and 14 patients...
December 7, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/29222007/current-concepts-in-pathogenesis-diagnosis-and-management-of-smoking-related-interstitial-lung-diseases
#5
REVIEW
Anupam Kumar, Sujith V Cherian, Robert Vassallo, Eunhee S Yi, Jay H Ryu
Tobacco exposure results in various changes to the airways and lung parenchyma. While emphysema represents the more common injury pattern, in some individuals, cigarette smoke injures alveolar epithelial and other lung cells resulting in diffuse infiltrates and parenchymal fibrosis. Smoking can trigger interstitial injury patterns mediated via recruitment and inappropriate persistence of myeloid and other immune cells including eosinophils. As our understanding of the role of cigarette smoke constituents in triggering lung injury continues to evolve, so does our recognition of the spectrum of smoking-related interstitial lung changes...
December 5, 2017: Chest
https://www.readbyqxmd.com/read/29221965/diffusion-kurtosis-imaging-of-a-human-nasopharyngeal-carcinoma-xenograft-model-initial-experience-with-pathological-correlation
#6
Jing Zhong, Peng Shi, Yunbin Chen, Rongfang Huang, Youping Xiao, Xiang Zheng, Dechun Zheng, Li Peng
PURPOSE: The aim of this study was to investigate the relationship between diffusion kurtosis imaging (DKI)-related parameters and pathological measures using human nasopharyngeal carcinoma (NPC) xenografts in a nude mouse model. MATERIALS AND METHODS: Twenty-six BALB/c-nu nude mice were divided into two groups that were injected with two different nasopharyngeal squamous cell carcinoma cell lines (CNE1 and CNE2). DK magnetic resonance (MR) imaging was performed on a 3...
December 5, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/29221964/inflammatory-hepatic-adenomas-characterization-with-hepatobiliary-mri-contrast-agents
#7
James F Glockner, Christine U Lee, Taofic Mounajjed
PURPOSE: To characterize the MRI appearance of inflammatory hepatic adenomas using hepatobiliary contrast agents. MATERIALS AND METHODS: MRI was performed using hepatobiliary contrast agents (3 with gadobenate dimeglumine and 24 with gadoxetic acid) in 27 patients with immunohistochemistry-confirmed diagnosis of inflammatory hepatic adenoma. The appearance of the lesions on T2 and diffusion-weighted images, pre-gadolinium T1-weighted images, dynamic post-gadolinium images, and hepatobiliary phase images was assessed...
December 5, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/29221921/ethanol-embolotherapy-for-the-management-of-refractory-chronic-skin-ulcers-caused-by%C3%A2-arteriovenous-malformations
#8
YunBo Jin, Xi Yang, Chen Hua, XiaoXi Lin, Hui Chen, Gang Ma, TianYou Wang, WenXin Yu
PURPOSE: To describe the clinical features and treatment outcomes of ethanol embolotherapy in refractory chronic skin ulcers caused by arteriovenous malformations (AVMs). MATERIALS AND METHODS: From October 2011 to October 2015, 12 patients (5 male; mean age, 26.2 y) with refractory chronic skin ulcers caused by AVMs were treated at a single institution. Ethanol embolotherapy was performed by direct puncture techniques. Needles were directly inserted toward the nidus of the lesion based on imaging analysis...
December 5, 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/29221721/factors-affecting-the-precision-of-lesion-sizing-with-contrast-enhanced-spectral-mammography
#9
M Del Mar Travieso-Aja, P Naranjo-Santana, C Fernández-Ruiz, W Severino-Rondón, D Maldonado-Saluzzi, M Rodríguez Rodríguez, V Vega-Benítez, O P Luzardo
AIM: To evaluate the precision of the pre-surgical measurement of the size of breast cancer by contrast-enhanced spectral mammography (CESM). MATERIAL AND METHODS: This was a retrospective study of 204 breast cancers. Variables related to tumour biology and anthropometric variables were recorded and considered when evaluating the efficacy of CESM in predicting tumour size. Microscopic measurement of the largest diameter of the tumour at pathology was chosen as the reference standard...
December 5, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/29221640/threshold-based-segmentation-of-fluorescent-and-chromogenic-images-of-microglia-astrocytes-and-oligodendrocytes-in-fiji
#10
Sinead Healy, Jill McMahon, Peter Owens, Peter Dockery, Una FitzGerald
BACKGROUND: Image segmentation is often imperfect, particularly in complex image sets such z-stack micrographs of slice cultures and there is a need for sufficient details of parameters used in quantitative image analysis to allow independent repeatability and appraisal. NEW METHOD: For the first time, we have critically evaluated, quantified and validated the performance of different segmentation methodologies using z-stack images of ex vivo glial cells. The BioVoxxel toolbox plugin, available in FIJI, was used to measure the relative quality, accuracy, specificity and sensitivity of 16 global and 9 local threshold automatic thresholding algorithms...
December 5, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/29221277/worse-survival-after-curative-resection-in-patients-with-pathological-stage-i-non-small-cell-lung-cancer-adjoining-pulmonary-cavity-formation
#11
Hiroyuki Kimura, Hisashi Saji, Tomoyuki Miyazawa, Hiroki Sakai, Masataka Tsuda, Yoichi Wakiyama, Hideki Marushima, Koji Kojima, Haruhiko Nakamura
Background: A few investigators have suggested an association between lung cancer and pulmonary cavity. However, this clinical association and its carcinogenic correlations are not well recognized. This study aimed to clarify the clinical features and to demonstrate the associated survival outcomes after curative surgery in patients with early non-small cell lung cancer (NSCLC) adjoining pulmonary cavity formation. Methods: We retrospectively reviewed 275 patients with pathological stage I NSCLC by re-evaluating their chest computed tomography images...
September 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29221183/radial-gradient-and-radial-deviation-radiomic-features-from-pre-surgical-ct-scans-are-associated-with-survival-among-lung-adenocarcinoma-patients
#12
Ilke Tunali, Olya Stringfield, Albert Guvenis, Hua Wang, Ying Liu, Yoganand Balagurunathan, Philippe Lambin, Robert J Gillies, Matthew B Schabath
The goal of this study was to extract features from radial deviation and radial gradient maps which were derived from thoracic CT scans of patients diagnosed with lung adenocarcinoma and assess whether these features are associated with overall survival. We used two independent cohorts from different institutions for training (n= 61) and test (n= 47) and focused our analyses on features that were non-redundant and highly reproducible. To reduce the number of features and covariates into a single parsimonious model, a backward elimination approach was applied...
November 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29220695/altered-resting-state-functional-connectivity-in-early-course-schizophrenia
#13
Aastha Sharma, Arvind Kumar, Sadhana Singh, Triptish Bhatia, R P Beniwal, Subash Khushu, Konasale M Prasad, Smita N Deshpande
Impaired connectivity is proposed to underlie pathophysiology of schizophrenia. Existing studies on functional connectivity show inconsistent results. We examined functional connectivity in a clinically homogenous sample of 34 early course schizophrenia patients compared with/to 19 healthy controls using resting state functional magnetic resonance imaging (rsfMRI). Mean duration of illness for schizophrenia patients was 4 ± 1.78 years. Following a comprehensive clinical assessment, rsfMRI data were acquired using a 3...
November 22, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/29220607/case-of-cone-dystrophy-with-normal-fundus-appearance-associated-with-biallelic-poc1b-variants
#14
Azusa Kominami, Shinji Ueno, Taro Kominami, Ayami Nakanishi, Yasuki Ito, Kaoru Fujinami, Kazushige Tsunoda, Takaaki Hayashi, Sachiko Kikuchi, Shuhei Kameya, Takeshi Iwata, Hiroko Terasaki
BACKGROUND: Biallelic variants of POC1B were recently reported to cause autosomal recessive non-syndromic cone dystrophy. However, the number of studies supporting this is limited, and the clinical phenotypes of cone dystrophy have not been definitively determined. The purpose of this study was to report the phenotype of a case of POC1B-associated cone dystrophy. MATERIALS AND METHODS: The medical chart of one case diagnosed with cone dystrophy was reviewed. RESULTS: The patient was a 20-year-old Japanese man whose chief complaint was a progressive decrease in his central vision...
December 8, 2017: Ophthalmic Genetics
https://www.readbyqxmd.com/read/29220401/contour-recognition-of-complex-leaf-shapes
#15
Giacomo Diaz
The leaf shape is an important taxonomic character. Compared to the classic morphological leaf features such as veins, margin indentations, sinuses, etc., the shape is simpler to obtain by using the 'magic wand' or other contouring tools that are available in most of imaging applications. The only exception is when leaves develop large lobes that get in touch or overlap each other, as the presence of hidden or closed portions of the leaf border precludes the application of automatic methods and forces the leaf contour to be traced manually...
2017: PloS One
https://www.readbyqxmd.com/read/29220357/difference-of-the-progression-of-pulmonary-cysts-assessed-by-computed-tomography-among-copd-lymphangioleiomyomatosis-and-birt-hogg-dub%C3%A3-syndrome
#16
Kazunori Tobino, Toyohiro Hirai, Takeshi Johkoh, Kiminori Fujimoto, Atsushi Kawaguchi, Noriyuki Tomiyama, Kazuhisa Takahashi, Kuniaki Seyama
Many groups developed the methods to quantitatively analyze low attenuation area (LAA) on chest CT in patients with cystic lung diseases. Especially in COPD, it was reported that the cumulative size distribution of LAA clusters follows a power law characterized by the exponent D, which reflect the fractal dimension of terminal airspace geometry. We hypoyhesized that the quantitative charateristics of LAA clusters including fractal property might indicate the different features of the progression of cysts in cystic lung diseases...
2017: PloS One
https://www.readbyqxmd.com/read/29220319/poi-summarization-by-aesthetics-evaluation-from-crowd-source-social-media
#17
Xueming Qian, Cheng Li, Ke Lan, Xingsong Hou, Zhetao Li, Junwei Han
Place-of-Interest (POI) summarization by aesthetics evaluation can recommend a set of POI images to the user and it is significant in image retrieval. In this paper, we propose a system that summarizes a collection of POI images regarding both aesthetics and diversity of the distribution of cameras. First, we generate visual albums by a coarse-to-fine POI clustering approach and then generate 3D models for each album by the collected images from social media. Second, based on the 3D to 2D projection relationship, we select candidate photos in terms of the proposed crowd source saliency model...
March 2018: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/29220318/detection-and-separation-of-smoke-from-single-image-frames
#18
Hongda Tian, Wanqing Li, Philip O Ogunbona, Lei Wang
This paper proposes novel methods for detecting and separating smoke from a single image frame. Specifically, an image formation model is derived based on the atmospheric scattering models. The separation of a frame into quasi-smoke and quasi-background components is formulated as convex optimization that solves a sparse representation problem using dual dictionaries for the smoke and background components, respectively. A novel feature is constructed as a concatenation of the respective sparse coefficients for detection...
March 2018: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/29220317/no-reference-image-quality-assessment-by-wide-perceptual-domain-scorer-ensemble-method
#19
Tsung-Jung Liu, Kuan-Hsien Liu
A no-reference (NR) learning-based approach to assess image quality is presented in this paper. The devised features are extracted from wide perceptual domains, including brightness, contrast, color, distortion, and texture. These features are used to train a model (scorer) which can predict scores. The scorer selection algorithms are utilized to help simplify the proposed system. In the final stage, the ensemble method is used to combine the prediction results from selected scorers. Two multiple-scale versions of the proposed approach are also presented along with the single-scale one...
March 2018: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/29220313/how-does-the-low-rank-matrix-decomposition-help-internal-and-external-learnings-for-super-resolution
#20
Shuang Wang, Bo Yue, Xuefeng Liang, Licheng Jiao
Wisely utilizing the internal and external learning methods is a new challenge in super-resolution problem. To address this issue, we analyze the attributes of two methodologies and find two observations of their recovered details: 1) they are complementary in both feature space and image plane and 2) they distribute sparsely in the spatial space. These inspire us to propose a low-rank solution which effectively integrates two learning methods and then achieves a superior result. To fit this solution, the internal learning method and the external learning method are tailored to produce multiple preliminary results...
March 2018: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
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