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Texture analysis

Katja N De Paepe, Frederik De Keyzer, Pascal Wolter, Oliver Bechter, Daan Dierickx, Ann Janssens, Gregor Verhoef, Raymond Oyen, Vincent Vandecaveye
BACKGROUND: Correct staging and treatment initiation in malignant lymphoma depends on accurate lymph node characterization. However, nodal assessment based on conventional and diffusion-weighted (DWI) MRI remains challenging, particularly in smaller nodes. PURPOSE: To evaluate first-order apparent diffusion coefficient (ADC) texture parameters compared to mean ADC for lymph node characterization in non-Hodgkin lymphoma (NHL) using whole-body DWI (WB-DWI). STUDY TYPE: Retrospective...
April 14, 2018: Journal of Magnetic Resonance Imaging: JMRI
J D Quigley, T M Hill, T S Dennis, F X Suarez-Mena, R L Schlotterbeck
Milk replacer (MR) feeding programs have traditionally fed at less than ad libitum amounts to promote calf starter (CS) intake and allow early weaning. More recently, increased amounts of MR preweaning have been shown to increase preweaning ADG, although postweaning growth may be reduced. Several studies suggest that limited postweaning digestion of nutrients in CS may contribute to postweaning growth impairment. It is not clear whether CS formulation might also contribute to differences in postweaning nutrient digestion when calves are fed different MR programs...
April 11, 2018: Journal of Dairy Science
José Raniery Ferreira Junior, Marcel Koenigkam-Santos, Federico Enrique Garcia Cipriano, Alexandre Todorovic Fabro, Paulo Mazzoncini de Azevedo-Marques
BACKGROUND AND OBJECTIVES: lung cancer is the leading cause of cancer-related deaths in the world, and its poor prognosis varies markedly according to tumor staging. Computed tomography (CT) is the imaging modality of choice for lung cancer evaluation, being used for diagnosis and clinical staging. Besides tumor stage, other features, like histopathological subtype, can also add prognostic information. In this work, radiomics-based CT features were used to predict lung cancer histopathology and metastases using machine learning models...
June 2018: Computer Methods and Programs in Biomedicine
M Kaci, A Belhaffef, S Meziane, G Dostert, P Menu, É Velot, S Desobry, E Arab-Tehrany
Emulsion-based delivery systems have been developed to increase the topical bioavailability of lipophilic active compounds within skin membrane. The aim was to develop nanoemulsion from natural sources (rapeseed oil) with the same sources of pure phospholipids (lecithin) rich on mono and polyunsaturated fatty acids for encapsulation of hydrophobic antioxidant (Coenzyme Q10 ) giving nanoemulsion with double functionality. Nanoemulsions were used for cream preparation using xanthan gum and carboxylmethylcellulose as texturizing agents...
April 5, 2018: Colloids and Surfaces. B, Biointerfaces
Zhongmin Dai, Weiqin Su, Huaihai Chen, Albert Barberán, Haochun Zhao, Mengjie Yu, Lu Yu, Philip C Brookes, Christopher W Schadt, Scott X Chang, Jianming Xu
Long-term elevated nitrogen (N) input from anthropogenic sources may cause soil acidification and decrease crop yield, yet the response of the belowground microbial community to long-term N input alone or in combination with phosphorus (P) and potassium (K) is poorly understood. We explored the effect of long-term N and NPK fertilization on soil bacterial diversity and community composition using meta-analysis of a global dataset. Nitrogen fertilization decreased soil pH, and increased soil organic carbon (C) and available N contents...
April 12, 2018: Global Change Biology
Chenglong Wang, Jie Luan, Adriana C Panayi, Dennis P Orgill, Minqiang Xin
INTRODUCTION: Breast augmentation is one of the most popular aesthetic plastic surgeries worldwide. There are various types of breast implants, and these can be categorised into different broad groups based on their content, shape or surface, to name a few. When looking at the surface of the shell, they can be categorised into two main kinds: textured and smooth implants. To our knowledge, a literature review and meta-analysis of the complications of these two types of implants when used for aesthetic breast augmentation has yet to be written...
April 10, 2018: BMJ Open
Hie Bum Suh, Yoon Seong Choi, Sohi Bae, Sung Soo Ahn, Jong Hee Chang, Seok-Gu Kang, Eui Hyun Kim, Se Hoon Kim, Seung-Koo Lee
OBJECTIVES: To evaluate the diagnostic performance of magnetic resonance (MR) radiomics-based machine-learning algorithms in differentiating primary central nervous system lymphoma (PCNSL) from non-necrotic atypical glioblastoma (GBM). METHODS: Seventy-seven patients (54 individuals with PCNSL and 23 with non-necrotic atypical GBM), diagnosed from January 2009 to April 2017, were enrolled in this retrospective study. A total of 6,366 radiomics features, including shape, volume, first-order, texture, and wavelet-transformed features, were extracted from multi-parametric (post-contrast T1- and T2-weighted, and fluid attenuation inversion recovery images) and multiregional (enhanced and non-enhanced) tumour volumes...
April 6, 2018: European Radiology
S Liu, H Shi, C Ji, H Zheng, X Pan, W Guan, L Chen, Y Sun, L Tang, Y Guan, W Li, Y Ge, J He, S Liu, Z Zhou
AIM: To explore the role of computed tomography (CT) texture analysis in predicting pathologic stage of gastric cancers. MATERIALS AND METHODS: Preoperative enhanced CT images of 153 patients (112 men, 41 women) with gastric cancers were reviewed retrospectively. Regions of interest (ROIs) were manually drawn along the margin of the lesion on the section where it appeared largest on the arterial and venous CT images, which yielded texture parameters, including mean, maximum frequency, mode, skewness, kurtosis, and entropy...
April 3, 2018: Clinical Radiology
Haitao Wang, Minying Cheng, Melissa Dsouza, Pamela Weisenhorn, Tianling Zheng, Jack A Gilbert
Urban greenspaces provide extensive ecosystem services, including pollutant remediation, water management, carbon maintenance, and nutrient cycling. However, while the urban soil microbiota underpin these services, we still have limited understanding of the factors that influence their distribution. We characterized soil bacterial communities from turf-grasses associated with urban parks, streets and residential sites across a major urban environment, including a gradient of human population density. Bacterial diversity was significantly positively correlated with the population density; and species diversity was greater in park and street soils, compared to residential soils...
April 6, 2018: Environmental Science & Technology
Margarita Kirienko, Luca Cozzi, Alexia Rossi, Emanuele Voulaz, Lidija Antunovic, Antonella Fogliata, Arturo Chiti, Martina Sollini
PURPOSE: To evaluate the ability of CT and PET radiomics features to classify lung lesions as primary or metastatic, and secondly to differentiate histological subtypes of primary lung cancers. METHODS: A cohort of 534 patients with lung lesions were retrospectively studied. Radiomics texture features were extracted using the LIFEx package from semiautomatically segmented PET and CT images. Histology data were recorded in all patients. The patient cohort was divided into a training and a validation group and linear discriminant analysis (LDA) was performed to classify the lesions using both direct and backward stepwise methods...
April 6, 2018: European Journal of Nuclear Medicine and Molecular Imaging
N Bahrami, D Piccioni, R Karunamuni, Y-H Chang, N White, R Delfanti, T M Seibert, J A Hattangadi-Gluth, A Dale, N Farid, C R McDonald
BACKGROUND AND PURPOSE: Treatment with bevacizumab is standard of care for recurrent high-grade gliomas; however, monitoring response to treatment following bevacizumab remains a challenge. The purpose of this study was to determine whether quantifying the sharpness of the fluid-attenuated inversion recovery hyperintense border using a measure derived from texture analysis-edge contrast-improves the evaluation of response to bevacizumab in patients with high-grade gliomas. MATERIALS AND METHODS: MRIs were evaluated in 33 patients with high-grade gliomas before and after the initiation of bevacizumab...
April 5, 2018: AJNR. American Journal of Neuroradiology
Sulaiman Ahmed, Xin Zhou, Yuehan Pang, Yanjie Xu, Chuan Tong, Jinsong Bao
Genetic diversity of 29 potato genotypes was estimated by their starch physicochemical properties and microsatellite markers. The apparent amylose content (AAC) of potato starches averaged 25.3%, ranging from 18.9 to 29.4%. Significance differences were observed in pasting and gel texture properties among potato accessions. Wide genetic diversity was also found in the gelatinization temperatures (To , Tp , Tc ), enthalpies of gelatinization, enthalpies of retrogradation and retrogradation percentage, which had ranges of 62...
August 15, 2018: Food Chemistry
Maysam Shahedi, Martin Halicek, Rongrong Guo, Guoyi Zhang, David S Schuster, Baowei Fei
PURPOSE: Prostate segmentation in computed tomography (CT) images is useful for treatment planning and procedure guidance such as external beam radiotherapy and brachytherapy. However, because of the low, soft tissue contrast of CT images, manual segmentation of the prostate is a time-consuming task with high interobserver variation. In this study, we proposed a semiautomated, three-dimensional (3D) segmentation for prostate CT images using shape and texture analysis and we evaluated the method against manual reference segmentations...
April 2, 2018: Medical Physics
Mustafa Arslan, Sema Murat, Gulce Alp, Ali Zaimoglu
PURPOSE: The objectives of this in vitro study were to evaluate the flexural strength (FS), surface roughness (Ra), and hydrophobicity of polymethylmethacrylate (PMMA)-based computer-aided design/computer-aided manufacturing (CAD/CAM) polymers and to compare the properties of different CAD/CAM PMMA-based polymers with conventional heat-polymerized PMMA following thermal cycling. MATERIALS AND METHODS: Twenty rectangular-shaped specimens (64 × 10 × 3.3 mm) were fabricated from three CAD/CAM PMMA-based polymers (M-PM Disc [M], AvaDent Puck Disc [A], and Pink CAD/CAM Disc Polident [P], and one conventional heat-polymerized PMMA (Promolux [C]), according to ISO 20795-1:2013 standards...
2018: International Journal of Computerized Dentistry
Huiquan Wang, S Nizam Ahmed, Mrinal Mandal
Cavernous malformation or cavernoma is one of the most common epileptogenic lesions. It is a type of brain vessel abnormality that can cause serious symptoms such as seizures, intracerebral hemorrhage, and various neurological disorders. Manual detection of cavernomas by physicians in a large set of brain MRI slices is a time-consuming and labor-intensive task and often delays diagnosis. In this paper, we propose a computer-aided diagnosis (CAD) system for cavernomas based on T2-weighted axial plane MRI image analysis...
March 21, 2018: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
Angelo Castello, Fabio Grizzi, Luca Toschi, Sabrina Rossi, Daoud Rahal, Federica Marchesi, Carlo Russo, Giovanna Finocchiaro, Egesta Lopci
OBJECTIVES: This study aimed to determine the prognostic role of textural features and their association with metabolic parameters, hypoxia, and cancer-related immune markers in non-small-cell lung cancer (NSCLC) patients. PATIENTS AND METHODS: The trial was registered at (NCT02519062). From January 2010 to May 2014, 44 patients (male : female=33 : 11; median age: 69.5 years), referred to our Institution for NSCLC resection, were enrolled...
March 30, 2018: Nuclear Medicine Communications
Yujie Wang, Xin Hu, Zhiwei Hou, Jingming Ning, Zhengzhu Zhang
BACKGROUND: The nitrogen (N) fertilizer play an important role in tea plantation management, with significant impacts on the photosynthetic capacity, productivity and nutrition status of tea plants. The present study aimed to establish a method for the discrimination of N fertilizer levels using hyperspectral imaging technique. RESULTS: Spectral data were extracted from the region of interest (ROI), followed by the first derivative (D1) to reduce background noise...
April 1, 2018: Journal of the Science of Food and Agriculture
Nur Ashikin Abdul-Hamid, Ahmed Mediani, M Maulidiani, Khalid Shadid, Intan Safinar Ismail, Faridah Abas, Nordin H Lajis
The aim of this study was to examine the variation in metabolite constituents of five commercial varieties of date fruits; Ajwa, Safawi and Ambar which originated from Madinah, the Iranian Bam and Tunisian Deglet Noor. The differences of metabolome were investigated using proton nuclear magnetic resonance (1 H NMR) spectroscopy combined with multivariate data analysis (MVDA). Principal Component Analysis (PCA) revealed clear separation between the date varieties. The Tunisian Deglet Noor demonstrated distinct cluster from the rest of the palm date samples based on the metabolite composition as shown by the pattern observed in Hierarchical Clustering Analysis (HCA) and PCA...
April 2018: Journal of Food Science and Technology
Gabriel A Leiva-Valenzuela, Marcela Quilaqueo, Daniela Lagos, Danilo Estay, Franco Pedreschi
The aim of this research was to determine the effect of composition (dietary fiber = DF, fat = F, and gluten = G) and baking time on the target microstructural parameters that were observed using images of potato and wheat starch biscuits. Microstructures were studied Scanning Electron Microscope (SEM). Non-enzymatic browning (NEB) was assessed using color image analysis. Texture and moisture analysis was performed to have a better understanding of the baking process. Analysis of images revealed that the starch granules retained their native form at the end of baking, suggesting their in complete gelatinization...
April 2018: Journal of Food Science and Technology
Yao Zhang, Lunan Guo, Dan Xu, Dandan Li, Na Yang, Feng Chen, Zhengyu Jin, Xueming Xu
This research aimed at investigating the effects of different weight-average molecular weights (Mw : T10, T70, T250, T750, T2000) of dextran (α-(1 → 6)-linked linear backbone, α-(1 → 3)-linked branching) on wheat sourdough bread qualities. Texture analyzer showed that dextran contributed to a significant inhibition of bread staling, particularly dextran T2000. Pasting profiles (Rapid visco-analysis) and steady rheological properties (steady shear measurements) of samples indicated that dextran T2000 suppressed the swelling and gelatinization of wheat starch granules and bound a great amount of water, thus retarding the aging process...
August 1, 2018: Food Chemistry
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