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https://www.readbyqxmd.com/read/29684936/the-relationship-between-hard-tissue-and-soft-tissue-dimensions-of-the-nose-in-children-a-3d-cone-beam-computed-tomography-study
#1
Eman Allam, Philani Mpofu, Ahmed Ghoneima, Mihran Tuceryan, Katherine Kula
This study using three-dimensional cone beam computed tomography (CBCT) images of children determined relationships between nasal skeletal and soft tissue measurements and assessed the association with sex, age, and skeletal maturation stage. Following reliability studies, skeletal and soft tissue parameters were measured on coded CBCTs of 73 children (28M:45F;6-13 yoa). Pearson and Mantel correlations were used to analyze associations between skeletal and soft tissues. Partial Mantel correlations were used to study the associations between skeletal and soft tissue, adjusting for sex, age, and skeletal maturation...
April 23, 2018: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/29684935/facial-asymmetry-based-age-group-estimation-role-in-recognizing-age-separated-face-images
#2
Muhammad Sajid, Imtiaz Ahmad Taj, Usama Ijaz Bajwa, Naeem Iqbal Ratyal
Face recognition aims to establish the identity of a person based on facial characteristics. On the other hand, age group estimation is the automatic calculation of an individual's age range based on facial features. Recognizing age-separated face images is still a challenging research problem due to complex aging processes involving different types of facial tissues, skin, fat, muscles, and bones. Certain holistic and local facial features are used to recognize age-separated face images. However, most of the existing methods recognize face images without incorporating the knowledge learned from age group estimation...
April 23, 2018: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/29684920/comparison-between-hemilaminectomy-with-either-anulectomy-or-partial-discectomy-for-treatment-of-thoracolumbar-intervertebral-disc-protrusion-in-dogs
#3
Abbe H Crawford, Steven De Decker
OBJECTIVES:  The aim of this study was to compare the clinical outcome of dogs undergoing a hemilaminectomy with anulectomy (HA) or a hemilaminectomy with partial discectomy (HPD) for treatment of thoracolumbar intervertebral disc protrusion. METHODS:  Medical records from 2006 to 2015 were retrospectively reviewed. Dogs were included if they had clinical signs and imaging findings consistent with thoracolumbar intervertebral disc protrusion and had undergone surgical treatment with a HA or HPD...
April 23, 2018: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/29684884/multi-temporal-surveys-for-microplastic-particles-enabled-by-a-novel-and-fast-application-of-swir-imaging-spectroscopy-study-of-an-urban-watercourse-traversing-the-city-of-berlin-germany
#4
L Katharina Schmidt, Mathias Bochow, Hannes K Imhof, Sascha E Oswald
Following the widespread assumption that a majority of ubiquitous marine microplastic particles originate from land-based sources, recent studies identify rivers as important pathways for microplastic particles (MPP) to the oceans. Yet a detailed understanding of the underlying processes and dominant sources is difficult to obtain with the existing accurate but extremely time-consuming methods available for the identification of MPP. Thus in the presented study, a novel approach applying short-wave infrared imaging spectroscopy for the quick and semi-automated identification of MPP is applied in combination with a multitemporal survey concept...
April 20, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29684842/shear-force-analysis-by-core-location-in-longissimus-steaks-from-nellore-cattle-using-hyperspectral-images-a-feasibility-study
#5
Juliana Monteiro Balage, José Manuel Amigo, Daniel Silva Antonelo, Madeline Rezende Mazon, Saulo da Luz E Silva
Industry requires non-destructive real-time methods for quality control of meat in order to improve production efficiency and meet consumer expectations. Near Infrared Hyperspectral Images were used for tenderness evaluation of Nellore beef and the construction of tenderness distribution maps. To investigate whether the selection of the region of interest (ROI) in the image at the exact location where the shear force core was collected improves tenderness prediction and classification models, 50 samples from Longissimus muscle were imaged (1000-2500 nm) and shear force were measured (Warner-Bratzler)...
April 12, 2018: Meat Science
https://www.readbyqxmd.com/read/29684840/predicting-pork-loin-intramuscular-fat-using-computer-vision-system
#6
J-H Liu, X Sun, J M Young, L A Bachmeier, D J Newman
The objective of this study was to investigate the ability of computer vision system to predict pork intramuscular fat percentage (IMF%). Center-cut loin samples (n = 85) were trimmed of subcutaneous fat and connective tissue. Images were acquired and pixels were segregated to estimate image IMF% and 18 image color features for each image. Subjective IMF% was determined by a trained grader. Ether extract IMF% was calculated using ether extract method. Image color features and image IMF% were used as predictors for stepwise regression and support vector machine models...
March 26, 2018: Meat Science
https://www.readbyqxmd.com/read/29684806/indocyanine-green-identification-for-tumor-infiltration-or-metastasis-originating-from-hepatocellular-carcinoma
#7
Atsushi Nanashima, Tetsuro Tominaga, Yorihisa Sumida, Shuichi Tobinaga, Takeshi Nagayasu
INTRODUCTION: The indocyanine green-photodynamic eye (ICG-PDE) system is useful to detect small hypervascular liver tumors, hepatocellular carcinoma (HCC), on the liver surface. This system may be also applied to improve determining the location of metastasis or tumor thrombus (TT). We herein report three case reports. ICG was administered preoperatively for functional testing and images of the tumor were observed during hepatectomy using a PDE camera. CASE SERIES: The patient in case 1 exhibited advanced HCC with TT in the portal trunk...
April 16, 2018: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29684805/detecting-a-rare-composite-small-bowel-lymphoma-by-magnetic-resonance-imaging-coincidentally-a-case-report-with-radiological-surgical-and-histopathological-features
#8
M Pezzella, B Brogna, A Romano, F Torelli, G Esposito, M Petrillo, F M Romano, N Di Martino, A Reginelli, R Grassi
INTRODUCTION: Diagnosing lymphoma continues to prove challenging in the clinical practice. Composite lymphoma (CL) is defined by the coexistence of different lymphoma subtypes in the same anatomical location. This condition has seldom been witnessed in the gastrointestinal (GI) tract. We weren't able to find previous cases in the literature about small bowel CL with follicular lymphoma (FL) and classical Hodgkin lymphoma (CHL). Surgery is the treatment of choice to obtain accurate histology, to manage and prevent acute complications...
April 16, 2018: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29684783/accurate-segmenting-of-cervical-tumors-in-pet-imaging-based-on-similarity-between-adjacent-slices
#9
Liyuan Chen, Chenyang Shen, Zhiguo Zhou, Genevieve Maquilan, Kimberly Thomas, Michael R Folkert, Kevin Albuquerque, Jing Wang
Because in PET imaging cervical tumors are close to the bladder with high capacity for the secreted 18 FDG tracer, conventional intensity-based segmentation methods often misclassify the bladder as a tumor. Based on the observation that tumor position and area do not change dramatically from slice to slice, we propose a two-stage scheme that facilitates segmentation. In the first stage, we used a graph-cut based algorithm to obtain initial contouring of the tumor based on local similarity information between voxels; this was achieved through manual contouring of the cervical tumor on one slice...
April 16, 2018: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29684782/evaluation-of-normal-lung-tissue-complication-probability-in-gated-and-conventional-radiotherapy-using-the-4d-xcat-digital-phantom
#10
Sara Shahzadeh, Somayeh Gholami, Seyed Mahmood Reza Aghamiri, Hojjat Mahani, Mansoure Nabavi, Faraz Kalantari
PURPOSE: The present study was conducted to investigate normal lung tissue complication probability in gated and conventional radiotherapy (RT) as a function of diaphragm motion, lesion size, and its location using 4D-XCAT digital phantom in a simulation study. MATERIALS AND METHODS: Different time series of 3D-CT images were generated using the 4D-XCAT digital phantom. The binary data obtained from this phantom were then converted to the digital imaging and communication in medicine (DICOM) format using an in-house MATLAB-based program to be compatible with our treatment planning system (TPS)...
April 12, 2018: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29684769/implicit-negative-affect-predicts-attention-to-sad-faces-beyond-self-reported-depressive-symptoms-in-healthy-individuals-an-eye-tracking-study
#11
Charlott Maria Bodenschatz, Marija Skopinceva, Anette Kersting, Markus Quirin, Thomas Suslow
Cognitive theories of depression assume biased attention towards mood-congruent information as a central vulnerability and maintaining factor. Among other symptoms, depression is characterized by excessive negative affect (NA). Yet, little is known about the impact of naturally occurring NA on the allocation of attention to emotional information. The study investigates how implicit and explicit NA as well as self-reported depressive symptoms predict attentional biases in a sample of healthy individuals (N = 104)...
April 4, 2018: Psychiatry Research
https://www.readbyqxmd.com/read/29684714/microspect-imaging-of-triple-negative-breast-cancer-cell-tumor-xenografted-in-athymic-mice-with-radioiodinated-anti-icam-1-monoclonal-antibody
#12
Linyi You, Xiangyu Wang, Zhide Guo, Deliang Zhang, Pu Zhang, Jindian Li, Xinhui Su, Weimin Pan, Xianzhong Zhang
Intercellular adhesion molecule-1(ICAM-1) is a potential molecular target and biomarker for triple negative breast cancer (TNBC) therapy and diagnosis. In this study, aICAM-1 was radioiodinated with 125 I/131 I in high radiochemical yield and the probes for TNBC tumor targeting and radioimmunotherapy were evaluated in tumor-bearing mice. High and specific accumulation of 125 I-aICAM1 in TNBC MDA-MB-231 tumor was observed in SPECT imaging and the tumor grew was inhibited obviously by 131 I-aICAM1. Thus, the radioiodinated aICAM1 could serve as potential agents for TNBC theranostics...
April 4, 2018: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/29684703/fossil-filamentous-microorganisms-associated-with-plants-in-early-terrestrial-environments
#13
REVIEW
Christine Strullu-Derrien
Microorganisms are ubiquitous in modern environments, where they have a variety of essential functions but little is known about their diversity and roles in early terrestrial environments. The earliest direct evidence of filamentous microorganisms associated with plants occurs around 407 million years ago in landscapes dominated by an herbaceous flora. 100 million years later, forests were well established and associations had increased in diversity. After more than a century since the first descriptions, the need for better understood fossils has renewed interest in their study...
April 20, 2018: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/29684676/fabrication-of-nanofibrous-microcarriers-mimicking-extracellular-matrix-for-functional-microtissue-formation-and-cartilage-regeneration
#14
Yansen Wang, Xueling Yuan, Kun Yu, Haoye Meng, Yudong Zheng, Jiang Peng, Shibi Lu, Xiaotong Liu, Yajie Xie, Kun Qiao
Cartilage has rather limited capacities for self-repair and regeneration. To repair complexly shaped cartilage tissue defects, we propose the application of microtissues fabricated from bone marrow-derived mesenchymal stem cells (BMSCs) cultured in natural bionic nanofibrous microcarriers (NF-MCs). The NF-MCs were structurally and functionally designed to mimic natural extracellular matrix (ECM) by crosslinking dialdehyde bacterial cellulose (DBC) with DL-allo-hydroxylysine (DHYL) and complexing chitosan (CS) with DHYL through electrostatic interactions...
April 16, 2018: Biomaterials
https://www.readbyqxmd.com/read/29684663/predictive-features-for-early-cancer-detection-in-barrett-s-esophagus-using-volumetric-laser-endomicroscopy
#15
Fons van der Sommen, Sander R Klomp, Anne-Fré Swager, Svitlana Zinger, Wouter L Curvers, Jacques J G H M Bergman, Erik J Schoon, Peter H N de With
The incidence of Barrett cancer is increasing rapidly and current screening protocols often miss the disease at an early, treatable stage. Volumetric Laser Endomicroscopy (VLE) is a promising new tool for finding this type of cancer early, capturing a full circumferential scan of Barrett's Esophagus (BE), up to 3-mm depth. However, the interpretation of these VLE scans can be complicated, due to the large amount of cross-sectional images and the subtle grayscale variations. Therefore, algorithms for automated analysis of VLE data can offer a valuable contribution to its overall interpretation...
April 13, 2018: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
https://www.readbyqxmd.com/read/29684645/challenges-in-pediatric-neuroimaging
#16
REVIEW
Matthew J Barkovich, Yi Li, Rahul S Desikan, A James Barkovich, Duan Xu
Pediatric neuroimaging is challenging due the rapid structural, metabolic, and functional changes that occur in the developing brain. A specially trained team is needed to produce high quality diagnostic images in children, due to their small physical size and immaturity. Patient motion, cooperation and medical condition dictate the methods and equipment used. A customized approach tailored to each child's age and functional status with the appropriate combination of dedicated staff, imaging hardware, and software is key; these range from low-tech techniques, such as feed and swaddle, to specialized small bore MRI scanners, MRI compatible incubators and neonatal head coils...
April 20, 2018: NeuroImage
https://www.readbyqxmd.com/read/29684560/formulation-characteristics-and-in-vitro-release-testing-of-cyclosporine-ophthalmic-ointments
#17
Yixuan Dong, Haiou Qu, Naresh Pavurala, Jiang Wang, Vasanthakumar Sekar, Marilyn Martinez, Raafat Fahmy, Muhammad Ashraf, Celia N Cruz, Xiaoming Xu
The aim of the present study was to investigate the relationship between formulation/process variables versus the critical quality attributes (CQAs) of cyclosporine ophthalmic ointments and to explore the feasibility of using an in vitro approach to assess product sameness. A definitive screening design (DSD) was used to evaluate the impact of formulation and process variables. The formulation variables included drug percentage, percentage of corn oil and lanolin alcohol. The process variables studied were mixing temperature, mixing time and the method of mixing...
April 20, 2018: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29684537/genetic-imaging-study-with-tc-99m-trodat-1-spect-in-adolescents-with-adhd-using-oros-methylphenidate
#18
Aynur Pekcanlar Akay, Gamze Çapa Kaya, Samet Kose, Çiğdem Eresen Yazıcıoğlu, Handan Özek Erkuran, Sevay Alşen Güney, Kaya Oğuz, Duygu Keskin, Burak Baykara, Neslihan İnal Emiroğlu, Mine Şencan Eren, Sefa Kızıldağ, Türkan Ertay, Dua Özsoylu, Süha Miral, Hatice Durak, Ali Saffet Gönül, Luis Augusto Rohde
AIM: To examine theeffects on the brain of 2-month treatment withamethylphenidate extended-release formulation (OROS-MPH) using [Tc-99m ] TRODAT-1SPECT in a sample of treatment-naïve adolescents with Attention Deficit/Hyperactivity Disorder (ADHD). In addition, to assess whether risk alleles (homozygosity for 10-repeat allele at the DAT1 gene were associated with alterations in striatal DAT availability. METHODS: Twenty adolescents with ADHD underwent brain single-photon emission computed tomography (SPECT) scans with [Tc-99m ] TRODAT-1 at baseline and two months after starting OROS-MPH treatment with dosages up to 1 mg/kg/day...
April 20, 2018: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/29684522/microcalcifications-in-breast-cancer-from-pathophysiology-to-diagnosis-and-prognosis
#19
REVIEW
S O'Grady, M P Morgan
The implementation of mammographic screening programmes in many countries has been linked to a marked increase in early detection and improved prognosis for breast cancer patients. Breast tumours can be detected by assessing several features in mammographic images but one of the most common are the presence of small deposits of calcium known as microcalcifications, which in many cases may be the only detectable sign of a breast tumour. In addition to their efficacy in the detection of breast cancer, the presence of microcalcifications within a breast tumour may also convey useful prognostic information...
April 20, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29684498/multi-modal-characterization-of-vasculature-and-nanoparticle-accumulation-in-five-tumor-xenograft-models
#20
Einar Sulheim, Jana Kim, Annemieke van Wamel, Eugene Kim, Sofie Snipstad, Igor Vidic, Ingeborg Hovde Grimstad, Marius Widerøe, Sverre H Torp, Steinar Lundgren, David J Waxman, Catharina de Lange Davies
Preclinical research has demonstrated that nanoparticles and macromolecules can accumulate in solid tumors due to the enhanced permeability and retention effect. However, drug loaded nanoparticles often fail to show increased efficacy in clinical trials. A better understanding of how tumor heterogeneity affects nanoparticle accumulation could help elucidate this discrepancy and help in patient selection for nanomedicine therapy. Here we studied five human tumor models with varying morphology and evaluated the accumulation of 100 nm polystyrene nanoparticles...
April 20, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
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