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Imaging features

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https://www.readbyqxmd.com/read/29454098/quantitative-imaging-features-and-postoperative-hepatic-insufficiency-a-multi-institutional-expanded-cohort
#1
Linda M Pak, Jayasree Chakraborty, Mithat Gonen, William C Chapman, Richard Kg Do, Bas Groot Koerkamp, Kees Verhoef, Ser Yee Lee, Marco Massani, Eric P van der Stok, Amber L Simpson
BACKGROUND: Post-hepatectomy liver insufficiency (PHLI) is a significant cause of morbidity and mortality after liver resection. Quantitative imaging analysis using CT scans measures variations in pixel intensity related to perfusion. A preliminary study demonstrated a correlation between quantitative imaging features of the future liver remnant (FLR) parenchyma from preoperative CT scans and PHLI. The objective of the present study was to explore the potential application of quantitative imaging analysis in PHLI in an expanded, multi-institutional cohort...
February 14, 2018: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/29454006/predicting-cognitive-decline-with-deep-learning-of-brain-metabolism-and-amyloid-imaging
#2
Hongyoon Choi, Kyong Hwan Jin
For effective treatment of Alzheimer's disease (AD), it is important to identify subjects who are most likely to exhibit rapid cognitive decline. We aimed to develop an automatic image interpretation system based on a deep convolutional neural network (CNN) which can accurately predict future cognitive decline in mild cognitive impairment (MCI) patients using flurodeoxyglucose and florbetapir positron emission tomography (PET). PET images of 139 patients with AD, 171 patients with MCI and 182 normal subjects obtained from Alzheimer's Disease Neuroimaging Initiative database were used...
February 14, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/29453944/clinical-features-of-extrapulmonary-sarcoidosis-without-lung-involvement
#3
W Ennis James, Efstratios Koutroumpakis, Biplab Saha, Alireza Nathani, Leahruth Saavedra, Recai M Yucel, Marc A Judson
BACKGROUND: Compared to pulmonary sarcoidosis, sarcoidosis without lung involvement may involve other immunopathologic mechanisms and be associated with other demographic and clinical features. METHODS: This was a retrospective analysis of clinical data collected in real time on 1,686 patients with biopsy-proven sarcoidosis from two large university sarcoidosis outpatient clinics in the United States. We compared differences in demographics characteristics and clinical presentation between pulmonary and non-pulmonary sarcoidosis (NPS)...
February 14, 2018: Chest
https://www.readbyqxmd.com/read/29453540/cellular-and-molecular-toxicity-of-iron-oxide-nanoparticles
#4
Blanca Laffon, Natalia Fernández-Bertólez, Carla Costa, Fátima Brandão, João Paulo Teixeira, Eduardo Pásaro, Vanessa Valdiglesias
Iron oxide nanoparticles (ION) have attracted much attention because of their particular physico-chemical properties, including superparamagnetism. These features make them suitable for many purposes and several interesting biomedical applications, such as to increase contrast in magnetic resonance imaging (MRI), as drug delivery systems and as hyperthermia agents. However, they have also shown to be easily accumulated in diverse tissues and induce toxicity at different levels. This chapter reviews the different cellular and molecular effects induced by ION reported from in vitro studies with human and non-human cell lines...
2018: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29453008/forensic-image-analysis-cctv-distortion-and-artefacts
#5
REVIEW
Dilan Seckiner, Xanthé Mallett, Claude Roux, Didier Meuwly, Philip Maynard
As a result of the worldwide deployment of surveillance cameras, authorities have gained a powerful tool that captures footage of activities of people in public areas. Surveillance cameras allow continuous monitoring of the area and allow footage to be obtained for later use, if a criminal or other act of interest occurs. Following this, a forensic practitioner, or expert witness can be required to analyse the footage of the Person of Interest. The examination ultimately aims at evaluating the strength of evidence at source and activity levels...
February 6, 2018: Forensic Science International
https://www.readbyqxmd.com/read/29452996/nomogram-for-predicting-the-risk-of-invasive-pulmonary-adenocarcinoma-for-pure-ground-glass-nodules
#6
Lijie Wang, Weiyu Shen, Yong Xi, Shuai Liu, Dawei Zheng, Chenghua Jin
BACKGROUND: The pure ground-glass nodule is a common clinical concern. The purpose of this study was to develop a nomogram to predict the risk of invasive pulmonary adenocarcinoma in patients with pure ground-glass nodules 1 cm or less in diameter based on the computed tomography imaging features. METHODS: We reviewed a total of 250 patients who had undergone resection of pure ground-glass nodules 1 cm or less in diameter in our hospital, including the data of histopathologic examinations after surgical resection...
February 13, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29452831/painless-urethral-bleeding-during-penile-erection-in-an-adult-man-with-klippel-trenaunay-syndrome-a-case-report
#7
Hongen Lei, Xing Guan, Hu Han, Xiaosong Qian, Xiaoguang Zhou, Xiaodong Zhang, Long Tian
INTRODUCTION: Klippel-Trenaunay syndrome (KTS) is a rare congenital vascular disorder characterized by a triad of cutaneous port wine capillary malformations, varicose veins, and hemihypertrophy of bone and soft tissues. AIMS: To report on a rare case of KTS in an adult man manifested by painless urethral bleeding during penile erection briefly review the clinical presentation and management of the genitourinary forms of this syndrome. METHODS: On presentation, the clinical features of this patient, including medical history, signs and symptoms, and imaging examinations, were recorded...
February 13, 2018: Sexual Medicine
https://www.readbyqxmd.com/read/29452756/quantification-of-thrombus-formation-in-malapposed-coronary-stents-deployed-in-vitro-through-imaging-analysis
#8
Jonathan Brown, Caroline C O'Brien, Augusto C Lopes, Kumaran Kolandaivelu, Elazer R Edelman
Stent thrombosis is a major complication of coronary stent and scaffold intervention. While often unanticipated and lethal, its incidence is low making mechanistic examination difficult through clinical investigation alone. Thus, throughout the technological advancement of these devices, experimental models have been indispensable in furthering our understanding of device safety and efficacy. As we refine model systems to gain deeper insight into adverse events, it is equally important that we continue to refine our measurement methods...
February 9, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29452661/risk-stratification-in-follicular-lymphoma
#9
REVIEW
Carla Casulo
Advances in the understanding of FL biology, molecular characteristics and clinical risk factors are further highlighting the heterogeneity of this disease. Historically used prognostic factors were broadly based on clinical and laboratory features at the time of diagnosis. However novel prognostic factors are emerging that can be studied at the time of diagnosis, and relapse, and use a variety of tools including gene alterations and diagnostic imaging. These novel discoveries are being implemented into daily practice with the ultimate goal of providing a precise, individualized approach to every patient with FL...
March 2018: Best Practice & Research. Clinical Haematology
https://www.readbyqxmd.com/read/29452616/tuberculosis
#10
REVIEW
Alfred O Ankrah, Andor W J M Glaudemans, Alex Maes, Christophe Van de Wiele, Rudi A J O Dierckx, Mariza Vorster, Mike M Sathekge
Tuberculosis (TB) is currently the world's leading cause of infectious mortality. Imaging plays an important role in the management of this disease. The complex immune response of the human body to Mycobacterium tuberculosis results in a wide array of clinical manifestations, making clinical and radiological diagnosis challenging. 18 F-FDG-PET/CT is very sensitive in the early detection of TB in most parts of the body; however, the lack of specificity is a major limitation. 18 F-FDG-PET/CT images the whole body and provides a pre-therapeutic metabolic map of the infection, enabling clinicians to accurately assess the burden of disease...
March 2018: Seminars in Nuclear Medicine
https://www.readbyqxmd.com/read/29452312/effects-of-higher-versus-lower-threat-contexts-on-pain-related-visual-attention-biases-an-eye-tracking-study-of-chronic-pain
#11
Todd Jackson, Lin Su, Yang Wang
In this research, we examined effects of higher versus lower threat contexts on attention biases in more and less pain-fearful chronic pain subgroups via eye-tracking methodology. Within a mixed chronic pain sample (69 women, 29 men), biases in orienting and maintenance of visual attention were assessed during the standardized image pair presentation phase (2000ms) of a modified visual dot probe task featuring painful-neutral (P-N) image pairs (lower threat context) and a parallel task in which these P-N pairs cued potential pain (higher threat context)...
February 13, 2018: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/29452098/features-of-chronic-obstructive-pulmonary-disease-as-predictors-of-lung-cancer
#12
Laurie L Carr, Sean Jacobson, David A Lynch, Marilyn G Foreman, Eric L Flenaugh, Craig P Hersh, Frank C Sciurba, David O Wilson, Jessica C Sieren, Patrick Mulhall, Victor Kim, C Matthew Kinsey, Russell P Bowler
BACKGROUND: Lung cancer is a leading cause of death and hospitalization for patients with chronic obstructive lung disease, (COPD); a detailed understanding of which clinical features of COPD increase risk is needed. METHODS: To identify clinical and imaging features of smokers, with and without COPD, that are associated with an increased risk of lung cancer, we performed a nested case-control study of COPDGene subjects with and without lung cancer, age 45-80, who smoked at least 10-pack years...
February 13, 2018: Chest
https://www.readbyqxmd.com/read/29451955/relationship-between-subchondral-bone-microstructure-and-articular-cartilage-in-the-osteoarthritic-knee-using-3t-mri
#13
Chenglei Liu, Chang Liu, Liping Si, Hao Shen, Qian Wang, Weiwu Yao
BACKGROUND: The importance of subchondral bone in the pathogenesis of osteoarthritis (OA) has drawn interest. PURPOSE: To investigate subregional trabecular bone microstructural features and to determine the relationship between cartilage and trabecular bone in the osteoarthritic human knee. STUDY TYPE: Prospective study. SUBJECTS: In all, 92 knees were enrolled and divided into three groups: without OA, mild OA, and severe OA...
February 16, 2018: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29451495/perceptually-aware-image-retargeting-for-mobile-devices
#14
Yinzuo Zhou, Luming Zhang, Chao Zhang, Ping Li, Xuelong Li
Retargeting aims at adapting an original high-resolution photograph/video to a low-resolution screen with an arbitrary aspect ratio. Conventional approaches are generally based on desktop PCs, since the computation might be intolerable for mobile platforms (especially when retargeting videos). Typically, only low-level visual features are exploited, and human visual perception is not well encoded. In this paper, we propose a novel retargeting framework that rapidly shrinks a photograph/video by leveraging human gaze behavior...
May 2018: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/29451412/development-and-validation-of-a-radiomic-signature-to-predict-hpv-p16-status-from-standard-ct-imaging-a-multicenter-study
#15
Leijenaar Rth, Bogowicz M, Jochems A, Hoebers Fjp, Frederik Fwr, Huang Sh, Chan B, Waldron Jn, O'Sullivan B, Rietveld D, Leemans Cr, Brakenhoff Rh, Riesterer O, Tanadini-Lang S, Guckenberger M, Ikenberg K, Lambin P
OBJECTIVES: HPV positive oropharyngeal cancer (OPSCC) is biologically and clinically different from HPV negative OPSCC. Here, we evaluate the use of a radiomic approach to identify the HPV status of OPSCC. METHODS: Four independent cohorts, totaling 778 OPSCC patients with HPV determined by p16 were collected. We randomly assigned 80% of all data for model training (N=628) and 20% for validation (N=150). On the pre-treatment CT images, 902 radiomic features were calculated from the gross tumor volume (GTV)...
February 16, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29451149/a-study-on-clinical-characteristics-and-magnetic-resonance-imaging-manifestations-on-systemic-rosai-dorfman-disease
#16
Xiao Cheng, Jing-Liang Cheng, An-Kang Gao
Background: Rosai-Dorfman disease (RDD) is typically characterized by painless bilateral and symmetrical cervical lymphadenopathy, with associated fever and leukocytosis. The aim of the current study was to summarize the clinical features and imaging characteristics of RDD, in an effort to improve its diagnostic accuracy. Methods: The study was analyzed from 32 patients between January 2011 and December 2017; of these, 16 patients had pathologically diagnosed RDD, eight had pathologically diagnosed meningioma, and eight pathologically diagnosed lymphoma...
February 20, 2018: Chinese Medical Journal
https://www.readbyqxmd.com/read/29450853/endometriosis-clinical-features-mr-imaging-findings-and-pathologic-correlation
#17
REVIEW
Pietro Valerio Foti, Renato Farina, Stefano Palmucci, Ilenia Anna Agata Vizzini, Norma Libertini, Maria Coronella, Saveria Spadola, Rosario Caltabiano, Marco Iraci, Antonio Basile, Pietro Milone, Antonio Cianci, Giovanni Carlo Ettorre
OBJECTIVE: We illustrate the magnetic resonance imaging (MRI) features of endometriosis. BACKGROUND: Endometriosis is a chronic gynaecological condition affecting women of reproductive age and may cause pelvic pain and infertility. It is characterized by the growth of functional ectopic endometrial glands and stroma outside the uterus and includes three different manifestations: ovarian endometriomas, peritoneal implants, deep pelvic endometriosis. The primary locations are in the pelvis; extrapelvic endometriosis may rarely occur...
February 15, 2018: Insights Into Imaging
https://www.readbyqxmd.com/read/29450800/the-endogenous-subcellular-localisations-of-the-long-chain-fatty-acid-activating-enzymes-acsl3-and-acsl4-in-sarcoma-and-breast-cancer-cells
#18
Yassmeen Radif, Haarith Ndiaye, Vasiliki Kalantzi, Ruth Jacobs, Andrew Hall, Shane Minogue, Mark G Waugh
Fatty acid uptake and metabolism are often dysregulated in cancer cells. Fatty acid activation is a critical step that allows these biomolecules to enter cellular metabolic pathways such as mitochondrial β-oxidation for ATP generation or the lipogenic routes that generate bioactive lipids such as the inositol phospholipids. Fatty acid activation by the addition of coenzyme A is catalysed by a family of enzymes called the acyl CoA synthetase ligases (ACSL). Furthermore, enhanced expression of particular ACSL isoforms, such as ACSL4, is a feature of some more aggressive cancers and may contribute to the oncogenic phenotype...
February 15, 2018: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29450711/renal-fat-fraction-and-diffusion-tensor-imaging-in-patients-with-early-stage-diabetic-nephropathy
#19
Yuan-Cheng Wang, Yinglian Feng, Chun-Qiang Lu, Shenghong Ju
OBJECTIVE: To investigate the renal fat fraction and water molecular diffusion features in patients with early-stage DN using Dixon imaging and diffusion tensor imaging (DTI). METHODS: Sixty-one type 2 diabetics (normoalbuminuria: n = 40; microalbuminuria: n = 21) and 34 non-diabetic volunteers were included. All participants received three-point Dixon imaging and DTI using a 3.0-T magnetic resonance imager. The fat fraction [FF] and DTI features [fractional anisotropy (FA), apparent diffusion coefficient (ADC), tract counts and length from DTI tractography] were collected...
February 15, 2018: European Radiology
https://www.readbyqxmd.com/read/29450710/indicators-for-imaging-in-periorbital-cellulitis-secondary-to-rhinosinusitis
#20
Basel Jabarin, Ephraim Eviatar, Ofer Israel, Tal Marom, Haim Gavriel
PURPOSE: Our objective was to identify the clinical indicators for subperiosteal orbital abscess (SPOA) among patients who present with periorbital cellulitis secondary to rhinosinusitis, and to evaluate the need for performing a computerized tomography (CT) scan. METHODS: A retrospective cohort study of all patients admitted to our tertiary care emergency department between 2006 and 2014 was conducted. Included were healthy patients with acute periorbital cellulitis secondary to rhinosinusitis...
February 15, 2018: European Archives of Oto-rhino-laryngology
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