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https://www.readbyqxmd.com/read/29453808/three-dimensional-printing-in-congenital-heart-disease-a-systematic-review
#1
REVIEW
Ivan Lau, Zhonghua Sun
Three-dimensional (3D) printing has shown great promise in medicine with increasing reports in congenital heart disease (CHD). This systematic review aims to analyse the main clinical applications and accuracy of 3D printing in CHD, as well as to provide an overview of the software tools, time and costs associated with the generation of 3D printed heart models. A search of different databases was conducted to identify studies investigating the application of 3D printing in CHD. Studies based on patient's medical imaging datasets were included for analysis, while reports on in vitro phantom or review articles were excluded from the analysis...
February 17, 2018: Journal of Medical Radiation Sciences
https://www.readbyqxmd.com/read/29453244/white-matter-change-with-apathy-and-impulsivity-in-frontotemporal-lobar-degeneration-syndromes
#2
Claire J Lansdall, Ian T S Coyle-Gilchrist, P Simon Jones, Patricia Vázquez Rodríguez, Alicia Wilcox, Eileen Wehmann, Katrina M Dick, Trevor W Robbins, James B Rowe
OBJECTIVE: To identify the white matter correlates of apathy and impulsivity in the major syndromes associated with frontotemporal lobar degeneration, using diffusion-weighted imaging and data from the PiPPIN (Pick's Disease and Progressive Supranuclear Palsy: Prevalence and Incidence) study. We included behavioral and language variants of frontotemporal dementia, corticobasal syndrome, and progressive supranuclear palsy. METHODS: Seventy patients and 30 controls underwent diffusion tensor imaging at 3-tesla after detailed assessment of apathy and impulsivity...
February 16, 2018: Neurology
https://www.readbyqxmd.com/read/29453169/randomized-eeg-functional-brain-networks-in-major-depressive-disorders-with-greater-resilience-and-lower-rich-club-coefficient
#3
Minghui Zhang, Haiyan Zhou, Liqing Liu, Lei Feng, Jie Yang, Gang Wang, Ning Zhong
OBJECTIVE: Some studies have shown that the functional electroencephalogram (EEG) and functional magnetic resonance imaging (fMRI) networks in those with major depressive disorders (MDDs) have an abnormal random topology. In this study we aimed to further investigate the characteristics of the randomized functional brain networks in MDDs by examining resting-state scalp-EEG data. METHODS: Based on the methods of independent component analysis (ICA) and graph theoretic analysis, the abnormalities in the power spectral density (PSD) functional brain networks were compared between 13 MDDs and 13 matched healthy controls (HCs)...
January 31, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29451149/a-study-on-clinical-characteristics-and-magnetic-resonance-imaging-manifestations-on-systemic-rosai-dorfman-disease
#4
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/29450547/aflibercept-action-in-a-rabbit-model-of-chronic-retinal-neovascularization-reversible-inhibition-of-pathologic-leakage-with-dose-dependent-duration
#5
Jingtai Cao, Thomas C MacPherson, Bibiana V Iglesias, Yang Liu, Natasha Tirko, George D Yancopoulos, Stanley J Wiegand, Carmelo Romano
Purpose: We establish and characterize the chronic retinal neovascularization (RNV) induced by intravitreal (IVT) injection of DL-α-aminoadipic acid (AAA) in a rabbit model and investigate the extent and duration of inhibitory actions induced by IVT aflibercept on the RNV. Methods: Rabbits received a single IVT injection of AAA, with weekly follow-up fundus photography, fluorescein angiography (FA), and optical coherence tomography (OCT). After 10 weeks, they received a single IVT aflibercept or control injection...
February 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29449780/tubular-adenoma-of-the-breast-a-clinicopathologic-study-of-a-series-of-9-cases
#6
Boubacar Efared, Ibrahim S Sidibé, Souley Abdoulaziz, Nawal Hammas, Laila Chbani, Hinde El Fatemi
Tubular adenoma of the breast is one of the most rare benign neoplasms, accounting for only 0.13% to 1.7% of all breast benign tumors. Little is known about this rare neoplasm as the current literature offers only some case reports or a few number of small series. The aim of our study is to provide some clinicopathologic features of the breast tubular adenoma. We retrospectively analyzed at our department of pathology all cases of breast tubular adenomas confirmed by immunohistochemistry over a period of 9 years (2009-2017)...
2018: Clinical Medicine Insights. Pathology
https://www.readbyqxmd.com/read/29449283/clinical-validation-of-a-predictive-model-for-the-presence-of-cervical-lymph-node-metastasis-in-papillary-thyroid-cancer
#7
N U Patel, K E Lind, K McKinney, T J Clark, S S Pokharel, J M Meier, E R Stamm, K Garg, B Haugen
BACKGROUND AND PURPOSE: Ultrasound is a standard technique to detect lymph node metastasis in papillary thyroid cancer. Cystic changes and microcalcifications are the most specific features of metastasis, but with low sensitivity. This prospective study compared the diagnostic accuracy of a predictive model for sonographic evaluation of lymph nodes relative to the radiologist's standard assessment in detecting papillary thyroid cancer metastasis in patients after thyroidectomy. MATERIALS AND METHODS: Cervical lymph node sonographic images were reported by a radiologist (R method) per standard practice...
February 15, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29449035/usage-of-density-analysis-based-on-micro-ct-for-studying-lung-injury-associated-with-burn-blast-combined-injury
#8
Yang Chang, Dong-Hai Zhang, Quan Hu, Ling-Ying Liu, Yong-Hui Yu, Jia-Ke Chai
BACKGROUND: Burn-blast combined injury is a kind of injury caused by heat and blast at the same time. The lung injury after burn-blast combined injuries is of primary importance, and investigation of lung injury is needed in the clinical care of patients. Computed tomography (CT) is one of the standard tools used to observe the anatomical basis and pathophysiology of acute lung injury. METHODS: We applied a method of fast 3D (three-dimensional) reconstruction to calculate the density value of the lung injury by CT analysis...
February 12, 2018: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/29444709/mucinous-cystic-neoplasm-of-the-liver-with-extrahepatic-growth-presenting-with-ascending-cholangitis-diagnosed-by-endoscopic-ultrasound-features-a-case-report
#9
Tanawat Pattarapuntakul, Bancha Ovartlarnporn, Jaksin Sottisuporn
BACKGROUND: Mucinous cystic neoplasm of the liver with extrahepatic growth is a rare benign epithelial neoplasm of the biliary system that presents with a mass effect or is incidentally found on imaging. The tumor affects mostly the common hepatic duct, which is difficult to diagnose preoperatively by radiology, endoscopy, or cystic fluid analysis. Endoscopic ultrasound is a noninvasive tool for the evaluation of features of a cystic lesion and the extent of disease. Optimal treatment is complete tumor resection...
February 15, 2018: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29443389/can-we-trust-the-calculation-of-texture-indices-of-ct-images-a-phantom-study
#10
C Caramella, A Allorant, F Orlhac, F Bidault, B Asselain, S Ammari, P Jaranowski, A Moussier, C Balleyguier, N Lassau, S Pitre-Champagnat
PURPOSE: Texture analysis is an emerging tool in the field of medical imaging analysis. However, many issues have been raised in terms of its use in assessing patient images and it is crucial to harmonize and standardize this new imaging measurement tool. This study was designed to evaluate the reliability of texture indices of CT images on a phantom including a reproducibility study, to assess the discriminatory capacity of indices potentially relevant in CT medical images and to determine their redundancy...
February 14, 2018: Medical Physics
https://www.readbyqxmd.com/read/29443029/in-vivo-multimodal-imaging-and-analysis-of-mouse-laser-induced-choroidal-neovascularization-model
#11
Symantas Ragauskas, Eva Kielczewski, Joseph Vance, Simon Kaja, Giedrius Kalesnykas
Laser-induced choroidal neovascularization (CNV) is a well-established model to mimic the wet form of age-related macular degeneration (AMD). In this protocol, we aim to guide the reader not simply through the technical considerations of generating laser-induced lesions to trigger neovascular processes, but rather focus on the powerful information that can be obtained from multimodal longitudinal in vivo imaging throughout the follow-up period. The laser-induced mouse CNV model was generated by a diode laser administration...
January 21, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29442232/neuroimaging-of-first-seizure-in-the-adult-emergency-patients
#12
Kerem Ozturk, Esra Soylu, Cem Bilgin, Bahattin Hakyemez, Mufit Parlak
The aim is to establish the role of head computed tomography (CT) and magnetic resonance imaging (MRI) in adults presenting to the emergency department (ED) with first-time seizure (FS) and to analyze the potential predictor variables for the adverse imaging outcome. We retrospectively reviewed the medical records of all adults who underwent cranial CT or MRI between January 1, 2011, and December 1, 2016, to an academic ED for FS. Patients were excluded if were under 18 years of age, had known recent intracranial pathology, known brain tumor or having a history of trauma...
February 13, 2018: Acta Neurologica Belgica
https://www.readbyqxmd.com/read/29441225/assessment-of-the-agreement-between-cerebral-hemodynamic-indices-quantified-using-dynamic-susceptibility-contrast-and-dynamic-contrast-enhanced-perfusion-magnetic-resonance-imagings
#13
Seyed Salman Zakariaee, Mohammad Ali Oghabian, Kavous Firouznia, Guive Sharifi, Farshid Arbabi, Farhad Samiei
Background: Brain tumor is one of the most common tumors. A successful treatment might be achieved with an early identification. Pathological investigation as the gold standard method for tumor identification has some limitations. Noninvasive assessment of tumor specifications may be possible using perfusion-weighted magnetic resonance imaging (MRI). Cerebral blood volume (CBV) and cerebral blood flow (CBF) could be calculated based on dynamic contrast-enhanced MRI (DCE-MRI) in addition to dynamic susceptibility contrast MRI (DSC-MRI) modality...
2018: Journal of Clinical Imaging Science
https://www.readbyqxmd.com/read/29439932/in-vivo-imaging-of-single-mammalian-cells-in-development-and-disease
#14
REVIEW
Melanie D White, Ziqing W Zhao, Nicolas Plachta
Live imaging has transformed biomedical sciences by enabling visualization and analysis of dynamic cellular processes as they occur in their native contexts. Here, we review key recent efforts applying in vivo optical imaging with single-cell resolution to mammalian systems ranging from embryos to adult tissues and organs. We highlight insights into active processes regulating cell fate and morphogenesis during embryonic development, how neuronal circuitry and non-neuronal cell types contribute to neurological functions, and how novel imaging-based approaches enable the dissection of neurological disorders and cancer with high spatio-temporal resolution...
February 10, 2018: Trends in Molecular Medicine
https://www.readbyqxmd.com/read/29438963/health-professionals-and-coroners-views-on-less-invasive-perinatal-and-paediatric-autopsy-a-qualitative-study
#15
Celine Lewis, Melissa Hill, Owen J Arthurs, John C Hutchinson, Lyn S Chitty, Neil Sebire
OBJECTIVE: To assess health professionals' and coroners' attitudes towards non-minimally and minimally invasive autopsy in the perinatal and paediatric setting. METHODS: A qualitative study using semistructured interviews. Data were analysed thematically. RESULTS: Twenty-five health professionals (including perinatal/paediatric pathologists and anatomical pathology technologists, obstetricians, fetal medicine consultants and bereavement midwives, intensive care consultants and family liaison nurses, a consultant neonatologist and a paediatric radiologist) and four coroners participated...
February 8, 2018: Archives of Disease in Childhood
https://www.readbyqxmd.com/read/29437279/radiomic-features-of-pretreatment-mri-could-identify-t-stage-in-patients-with-rectal-cancer-preliminary-findings
#16
Yiqun Sun, Panpan Hu, Jiazhou Wang, Lijun Shen, Fan Xia, Gan Qing, Weigang Hu, Zhen Zhang, Chao Xin, Weijun Peng, Tong Tong, Yajia Gu
BACKGROUND: Recent studies have shown that magnetic resonance (MR) radiomic analysis is feasible and has some value in identifying tumor characteristics, but there are few data regarding the role of MR-based radiomic features in rectal cancer. PURPOSE: The aim of this study was to determine whether radiomic features extracted from T 2 -weighted imaging (T 2 WI) can identify pathological features in rectal cancer. STUDY TYPE: Retrospective study...
February 13, 2018: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29436039/cortical-structural-involvement-and-cognitive-dysfunction-in-early-parkinson-s-disease
#17
J C Klein, M Rolinski, L Griffanti, K Szewczyk-Krolikowski, F Baig, C Ruffmann, A R Groves, R A L Menke, M T Hu, C Mackay
Magnetic resonance imaging (MRI) studies in early Parkinson's disease (PD) have shown promise in the detection of disease-related brain changes in the white and deep grey matter. We set out to establish whether intrinsic cortical involvement in early PD can be detected with quantitative MRI. We collected a rich, multi-modal dataset, including diffusion MRI, T1 relaxometry and cortical morphometry, in 20 patients with early PD (disease duration, 1.9 ± 0.97 years, Hoehn & Yahr 1-2) and in 19 matched controls...
February 13, 2018: NMR in Biomedicine
https://www.readbyqxmd.com/read/29435705/vision-based-gait-impairment-analysis-for-aided-diagnosis
#18
Javier Ortells, María Trinidad Herrero-Ezquerro, Ramón A Mollineda
Gait is a firsthand reflection of health condition. This belief has inspired recent research efforts to automate the analysis of pathological gait, in order to assist physicians in decision-making. However, most of these efforts rely on gait descriptions which are difficult to understand by humans, or on sensing technologies hardly available in ambulatory services. This paper proposes a number of semantic and normalized gait features computed from a single video acquired by a low-cost sensor. Far from being conventional spatio-temporal descriptors, features are aimed at quantifying gait impairment, such as gait asymmetry from several perspectives or falling risk...
February 12, 2018: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/29435219/medullary-like-hepatocellular-carcinoma
#19
Alessandra Cristaudi, Jessica Barizzi, Raffaele Rosso, Marco Varini, Mario Alerci, Laura Rubbia Brandt, Pietro Majno, Ruben Carlo Balzarotti Canger
Hepatocellular carcinoma (HCC) is the most frequent primary hepatic cancer. Pathological features can define the biological behavior and prognosis. Medullary-like HCC is a very rare variant that has been described only twice in literature. In the present study, we report the case of a non-cirrhotic 72-year-old man, who presented two HCC lesions on routine screening for hepatitis C virus liver disease. Radiological imaging and biopsy showed two different subtypes: one classic HCC, which was treated with chemoembolization, and a second PET/CT-positive carcinoma with a PET/CT-positive metastatic coeliac lymph node, which was resected laparoscopically with a left lateral sectionectomy and extended lymphadenectomy...
February 2018: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/29434793/development-and-identification-of-set-transgenic-mice
#20
Siliang Xu, Xiaoqiang Liu, Lingling Gao, Boqun Xu, Jianmin Li, Chao Gao, Yugui Cui, Jiayin Liu
As a multifunctional protein involved in numerous biological processes, Set is expressed in several embryonic and adult organs. Furthermore, Set is overexpressed in numerous types of human cancers, including acute myeloid leukemia, breast cancer and pancreatic cancer. The expression of Set in germ cells is involved in gonad development, and the overexpression of Set has been observed in polycystic ovaries. In order to elucidate the physiological and pathological roles of Set, a Set transgenic mouse model was developed, in which the global overexpression of Set in adult tissues could be induced via the Cre/loxP system with the precise deletion of the Stop fragment in double-transgenic hybrids...
February 2018: Experimental and Therapeutic Medicine
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