1,891,056 results match your criteria Imaging in Embryonic Demise
Oper Neurosurg (Hagerstown) 2018 Dec 14. Epub 2018 Dec 14.
Department of Neurologic Surgery, Mayo Clinic Florida, Jacksonville, Florida.
We describe the operative approach and management for thoracic metastatic disease in a 78-yr-old man with worsening mechanical lower back and left-sided thoracic radicular pain. Imaging of the thoracic spine revealed an osteolytic T11 mass with destruction of the left T11 pedicle and transverse process. Biopsy confirmed spinal metastasis from the liver. Read More
Invest Ophthalmol Vis Sci 2018 Dec;59(15):5957-5964
Department of Ophthalmology, Visual and Anatomical Sciences, Wayne State University School of Medicine, Detroit, Michigan, United States.
Purpose: To test the hypothesis that mitochondrial respiration contributes to local changes in hydration involved in phototransduction-driven expansion of outer retina, as measured by structural responses on optical coherence tomography (OCT) and diffusion magnetic resonance imaging (MRI).
Methods: Oxygen consumption rate and mitochondrial reserve capacity of freshly isolated C57BL/6 and 129S6/SvEvTac mouse retina were measured using a Seahorse Extracellular Flux Analyzer. Light-stimulated outer retina layer water content was determined by proton density MRI, structure and thickness by ultrahigh-resolution OCT, and water mobility by diffusion MRI. Read More
Invest Ophthalmol Vis Sci 2018 Dec;59(15):5932-5940
Department of Ophthalmology and Optometry, Medical University of Vienna, Vienna, Austria.
Purpose: To prospectively monitor microaneurysms (MAs) in three dimensions using adaptive optics optical coherence tomography (AOOCT).
Methods: Patients with diabetes mellitus and parafoveal MAs were included in this longitudinal study. At baseline, MAs were identified in standard fluorescein angiography (FA) and subsequently imaged with an AOOCT prototype, incorporated into an AO fundus camera (RTX1, Imagine Eyes) device. Read More
Brain 2018 Dec 14. Epub 2018 Dec 14.
Berenson-Allen Center for Noninvasive Brain Stimulation, Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical Center, Boston, MA, USA.
Studies of the same disease often implicate different brain regions, contributing to a perceived reproducibility crisis in neuroimaging. Here, we leverage the normative human brain connectome to test whether seemingly heterogeneous neuroimaging findings localize to connected brain networks. We use neurodegenerative disease, and specifically Alzheimer's disease, as our example as it is one of the diseases that has been studied the most using neuroimaging. Read More
Eur J Cardiothorac Surg 2019 Jan;55(1):163-171
Department of Cardiovascular Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
PLoS One 2018 14;13(12):e0207486. Epub 2018 Dec 14.
University of Nebraska Medical Center, Omaha, NE, United States of America.
Background: Microbubbles (MB) can be compressed to nanometer-sized droplets and reactivated with diagnostic ultrasound; these reactivated MB possess unique imaging characteristics.
Objective: We hypothesized that droplets formed from compressing Definity MB may be used for infarct-enhancement imaging.
Methods: Fourteen rats underwent ligation of their left anterior descending (LAD) artery, and five pigs underwent 90 minute balloon occlusions of their mid LAD. Read More
Phytochemistry 2018 Dec 11;159:11-19. Epub 2018 Dec 11.
Rzeszów University of Technology, Faculty of Chemistry, 6 Powstańców Warszawy Ave., 35-959, Rzeszów, Poland.
Strawberry (Fragaria x ananassa Duch., Rosaceae) is the subject of many research studies due to its numerous features such as unique taste, aroma and health qualities. The distribution of low molecular weight metabolites belonging to aldehydes, ketones, alcohols, esters, organic acids, phenolics, amino acids and sugars classes within strawberry fruit cross-section was studied using mass spectrometry imaging (MSI) method with Ag nanoparticle enhanced target (AgNPET). Read More
Biomaterials 2018 Dec 5;192:579-589. Epub 2018 Dec 5.
The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China; Department of Chemistry, Jinan University, Guangzhou, 510632, China. Electronic address:
The effective design of a targeted drug delivery system could improve the therapeutic efficacy of anticancer drugs by reducing their undesirable adsorption and toxic side effects. Here, an RGD-peptide functionalized and bioresponsive ruthenium prodrug (Ru-RGD) was designed for both cancer therapy and clinical diagnosis. This prodrug can be selectively delivered to cervical tumor sites to enhance theranostic efficacy. Read More
J Colloid Interface Sci 2018 Dec 2;538:541-545. Epub 2018 Dec 2.
Department of Physics, Bar-Ilan University, Ramat-Gan 5290002, Israel; Bar-Ilan Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 5290002, Israel. Electronic address:
Hypothesis: Temperature-controlled self-faceting of liquid droplets has been recently discovered in surfactant-stabilized alkane-in-water emulsions. We hypothesize that similar self-faceting may occur in emulsion droplets of UV-polymerizable linear hydrocarbons. We further hypothesize that the faceted droplet shapes can be fixed by UV-initiated polymerization, thus providing a new route towards the production of solid polyhedra. Read More
Clin Imaging 2018 Dec 4;54:63-70. Epub 2018 Dec 4.
Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
Background: Magnetic resonance imaging (MRI) is a reliable imaging tool for evaluating gallbladder carcinoma, but it is costly and time-consuming.
Purpose: To compare noncontrast MRI with multidetector row CT (MDCT) and gadoxetic acid-enhanced whole MRI in distinguishing gallbladder carcinoma from benign disease.
Materials And Methods: 101 patients (36 with gallbladder carcinoma and 65 with benign disease) with mild focal gallbladder wall thickening were included. Read More
Clin Imaging 2018 Dec 1;54:57-62. Epub 2018 Dec 1.
Department of Radiology, University of Michigan Medical School, 3208C Medical Sciences Building 1, B1D502, Ann Arbor, MI 48109-5030, United States of America. Electronic address:
Introduction: Childhood pneumonia is a major cause of death in the 3rd world, and undernourishment increases the severity of the condition. We considered axillary thickness as a simple measurement to evaluate nutritional status that can be performed simultaneously with lung ultrasound. Our goal was to determine the distribution of axillary thickness in a cohort of children to determine a threshold for malnutrition. Read More
Colloids Surf B Biointerfaces 2018 Nov 22;175:272-280. Epub 2018 Nov 22.
State Key Laboratory of Environmental and Biological Analysis and Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Hong Kong, China. Electronic address:
The carbon quantum dots termined with amine groups (CQDs-NH) were synthesized in one-pot hydrothermal method with citric acid as carbon source and branched polyethylenimine (BPEI) as passive agent, which was then covalently linked to 1, 4, 7, 10-tetraazacyclononane (DOTA) framework to yield CQDs-DOTA. The CQDs-DOTA provide excellent ligand scaffolds for the chelation of lanthanide ions, yielding the related complexes CQDs-DOTA-Ln (Ln = Eu, Tb, Yb and Gd). The successful preparation of CQDs-DOTA-Ln was validated by TEM, XRD, XPS, and FT-IR spectroscopy. Read More
Biomaterials 2018 Dec 10;193:12-21. Epub 2018 Dec 10.
CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing 100190, PR China. Electronic address:
Nanosized drug delivery systems (nDDS) have been extensively exploited to achieve improved therapeutic performance of chemotherapeutic drugs in cancer treatment. Carrier-free nanodrugs have recently emerged as a promising generation of nDDS. In this work, a carrier-free theranostic nanodrug was fabricated by incorporating near-infrared (NIR) emission AIEgens (NPAPF) with redox responsive camptothecin-gemcitabine amphiphilic prodrug (CPT-ss-GEM) to form self-assembled nanoparticles (NCssG NPs). Read More
Clin Chim Acta 2018 Dec 11. Epub 2018 Dec 11.
Department of Clinical-Laboratory and Experimental-Research Medicine, Toho University Sakura Medical Center, 564-1 Shimoshizu, Sakura 285-8741, Japan. Electronic address:
Background: The levels of plasma sLR11, released from intimal SMCs, are positively associated with intima-media thickness (IMT) in asymptomatic subjects. We have evaluated the yet unknown pathological significance of sLR11 for plaque conditions in patients with carotid artery stenosis.
Methods: The presence of LR11 in carotid plaques was investigated using autopsy specimens. Read More
Acta Biomater 2018 Dec 11. Epub 2018 Dec 11.
Nankai University School of Medicine, Tianjin 300071, China; The Key Laboratory of Bioactive Materials, Ministry of Education, Nankai University, The College of Life Science, Tianjin 300071, China. Electronic address:
Mesenchymal stem cell (MSC) transplantation has emerged as a very promising strategy for the treatments of peripheral artery disease (PAD). However, MSC-based therapies are limited by low cell retention and survival rate in the ischemic zone. Small molecular (SM) hydrogels have shown attractive abilities to enhance the therapeutic effects of human MSCs via promoting their proliferation or maintaining their differentiation potential. Read More
Eur J Pharm Biopharm 2018 Dec 11. Epub 2018 Dec 11.
CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemical Physics, iCHEM, University of Science and Technology of China, Jinzai road 96, Hefei,230026, Anhui, China. Electronic address:
Efficient delivery of hydrophobic photosensitizer (PS) into tumor cells is a key step for photodynamic therapy (PDT). Redox-responsive polymeric nanoparticles of amphiphilic macro-photosensitizer has designed and prepared as a prodrug-like pro-photosensitizer (pro-PS) for PDT. PEG works as the hydrophilic block and the near infrared (NIR) brominated BODIPY derivative (BDP) works as the hydrophobic PS, and they were linked via the disulfide bond as PEG-SS-BDP, which could be broken for drug release owing to the high GSH concentration inside tumor cells. Read More
Biochimie 2018 Dec 11. Epub 2018 Dec 11.
Respiratory Medicine, Hunan Provincial People's Hospital, No. 61 Jiefang Xi Road, Changsha, 410219, Hunan, PR China; Institute of Respiratory Medicine, Changsha Medical College, No. 1501 Leifeng Road, Changsha, 410219, Hunan, PR China. Electronic address:
The present study was designed to explore the role of transient receptor potential canonical 3 (TRPC3) in nicotine-induced chronic obstructive pulmonary disease (COPD) and its underlying mechanism. In this study, the expression and localization of α5 nicotinic acetylcholine receptor (α5-nAchR) in lung tissues were determined by western blotting and immunohistochemistry. The quantitative real-time PCR (qRT-PCR) analysis was performed to examine the mRNA expression levels of α5-nAchR and TRPC3 in human airway smooth muscle cells (HASMCs). Read More
Int J Dev Neurosci 2018 Dec 11. Epub 2018 Dec 11.
Department of Occupational Science & Occupational Therapy, University of British Columbia, Vancouver, Canada; BC Children's Hospital Research Institute, Vancouver, Canada; Department of Pediatrics, University of British Columbia, Vancouver, Canada; Sunny Hill Health Centre for Children, Vancouver, Canada. Electronic address:
Aim: The aim of this study was to systematically review evidence about rehabilitation-induced neuroplasticity measured by magnetic resonance imaging (MRI) in children with neurodevelopmental disorders.
Method: The following databases were searched: MEDLINE, EMBASE, CINAHL, and PsycINFO. Two independent reviewers screened articles according to inclusion criteria: (1) peer-review study published in a scientific journal; (2) studies that evaluated a rehabilitation-based intervention; (3) participants aged less than 19 years with a neurodevelopmental disorder; (4) studies that used at least one MRI modality as an outcome measure. Read More
Neuroscience 2018 Dec 11. Epub 2018 Dec 11.
Northeastern Univ, Center for Translational NeuroImaging, Boston, MA, USA. Electronic address:
The present study was designed to use blood-oxygen-level dependent (BOLD) imaging to "fingerprint" the change in activity in response to oxycodone (OXY) in drug naïve rats before and after repeated exposure to OXY. It was hypothesized that repeated exposure to OXY would initiate adaptive changes in brain organization that would be reflected in an altered response to opioid exposure. Male rats exposed to OXY repeatedly showed conditioned place preference, evidence of drug seeking behavior and putative neuroadaptation. Read More
J Am Chem Soc 2018 Dec 14. Epub 2018 Dec 14.
Super-resolution fluorescence microscopy is a powerful tool to visualize biomolecules and cellular structures at the nanometer scale. Employing these techniques in living cells has opened up the possibility to study dynamic processes with unprecedented spatial and temporal resolution. Different physical approaches to super-resolution microscopy have been introduced over the last years. Read More
J Appl Clin Med Phys 2018 Dec 14. Epub 2018 Dec 14.
Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA.
Purpose: For prone breast treatment, daily image-guided radiation therapy (IGRT) allows couch shifting to correct breast position relative to the treatment field. This work investigates the dosimetric effect of reducing kV imaging frequencies and the feasibility of optimizing the frequency using patient anatomy or their first 3-day shifts.
Method: Thirty-seven prone breast patients who had been treated with skin marker alignment followed by daily kV were retrospectively analyzed. Read More
J Tissue Eng Regen Med 2018 Dec 14. Epub 2018 Dec 14.
Department of Oncology, Old Road Campus Research Building, University of Oxford, UK.
Development of optogenetically controllable human neural network model in three-dimensional (3D) can provide an investigative system that is physiologically relevant or mimic to the human brain. Light-sensitive neurons were generated by transducing channelrhodopsin-2 (ChR2) into human induced pluripotent stem cells (hiPSCs) derived neural progenitor cells (Axol) using lentiviruses and cell-type specific promoters. A mixed population of human iPSC-derived cortical neurons, astrocytes and progenitor cells was obtained (Axol-ChR2) upon neural differentiation. Read More
Biopolymers 2018 Dec 14:e23249. Epub 2018 Dec 14.
Department of Pharmacological & Pharmaceutical Sciences, University of Houston, 4849 Calhoun Rd, Health Building 2, Room 7033, Houston, Texas 77204-5037.
The metal-chelated 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid (DOTA) has made a significant impact on the field of diagnostic imaging. This imaging mechanism is largely dependent on the four side arm functionalities around the DOTA scaffold. We previously demonstrated the effect of peptoid residue modification on these DOTA side arms, thereby conferring diverse physiochemical properties to the imaging mechanism. Read More
Retina 2018 Dec 6. Epub 2018 Dec 6.
Vitreous, Retina, Macula Consultants of New York, New York.
Purpose: To investigate the imaging characteristics of early Type 3 neovascularization and propose a new pathophysiologic sequence for early disease.
Methods: Patients were evaluated with a comprehensive ophthalmologic examination to include fundus photography, optical coherence tomography, optical coherence tomography angiography, fluorescein angiography, and volume-rendered optical coherence tomography angiography. Relevant literature was also reviewed. Read More
Dermatol Surg 2018 Dec 13. Epub 2018 Dec 13.
Oaro Dermatology Clinic, Seoul, Republic of Korea.
Background: Thread lifting with absorbable sutures has recently gained prominence for rejuvenating ptotic and sagging soft tissues in aging face. A barbed, delayed absorbable polyglyconate monofilament shows significantly high tensile loads with superior flexibility and elasticity.
Objective: To evaluate the safety and efficacy of novel thread lifting regimen with barbed polyglyconate suture for counteracting the descent and laxity of the aging face. Read More
J Craniofac Surg 2018 Dec 13. Epub 2018 Dec 13.
UT Southwestern Medical Center.
Human interactions begin with near-instantaneous visual evaluation of the face, modifying emotional responses and social behavior toward the person. Eye-tracking technology can provide a potential window into how humans undertake this evaluation, and the threshold of whether a face containing a craniofacial difference is perceived as "normal." This study's main questions were whether gaze patterns differ from normal when evaluating children with craniofacial differences, and whether these gaze patterns vary with different levels of craniofacial deformity. Read More
Otol Neurotol 2018 Dec 13. Epub 2018 Dec 13.
Albers-Schönberg Institute for Radiology in Hamburg, Germany.
Objective: Our aim was to evaluate the validity and reliability of clinically relevant tests in the diagnosis of Menière's disease (MD) according to the criteria formulated during 2015 as well as their efficacy in detecting endolymphatic hydrops (EH). The focus was on: three-dimensional fluid-attenuated inversion recovery-SPectral Attenuated Inversion Recovery (3D-FLAIR-SPAIR) sequences using 3 Tesla magnetic resonance imaging (3T MRI) performed 24 hours after intratympanic Gadolinium injection (IT-Gd) in comparison with the functional tests pure tone audiometry (PTA), caloric test, video head impulse test (vHIT), and cervical-vestibular-evoked-myogenic-potentials (cVEMP).
Study Design: Retrospective study. Read More
Eye Contact Lens 2018 Dec 11. Epub 2018 Dec 11.
Departments of Innovative Visual Science (S.K., K.M.), and Ophthalmology (S.K., N.M., M.O., S.A., Y.T., K.M., K.N.), Osaka University Graduate School of Medicine, Osaka, Japan; Research and Development Division (Y.T.), Rohto, Kyoto, Japan; and Department of Ophthalmology, Icahn School of Medicine at Mount Sinai (S.D.K.), New York, NY.
Objectives: To evaluate corneal irregular astigmatism due to the anterior corneal surface using Fourier harmonic analysis with a Placido ring-based corneal topographer (Placido-based topographer) and three-dimensional anterior segment optical coherence tomography (OCT) in dry eyes.
Methods: Forty-four eyes of 44 subjects with dry eye and 20 eyes of 20 normal control subjects were enrolled. Corneal topographic data were obtained using a Placido-based topographer and OCT. Read More
J Thorac Imaging 2018 Dec 13. Epub 2018 Dec 13.
Department of Diagnostic and Interventional Radiology, University Hospital of Heidelberg.
Novel therapeutic options in chronic obstructive pulmonary disease (COPD) require delicate patient selection and thus demand for expert radiologists visually and quantitatively evaluating high-resolution computed tomography (CT) with additional functional acquisitions such as paired inspiratory-expiratory scans or dynamic airway CT. The differentiation between emphysema-dominant and airway-dominant COPD phenotypes by imaging has immediate clinical value for patient management. Assessment of emphysema severity, distribution patterns, and fissure integrity are essential for stratifying patients for different surgical and endoscopic lung volume reduction procedures. Read More
J Thorac Imaging 2018 Dec 13. Epub 2018 Dec 13.
Center for Medical Imaging North-East Netherlands (CMI-NEN), University Medical Center Groningen, University of Groningen.
Lung cancer, chronic obstructive pulmonary disease, and cardiovascular disease are highly prevalent in the general population and expected to cause most deaths by 2050. For these "Big-3," treatment might cure, delay, or stop the progression of disease at a very early stage. Lung nodule growth rate (a biomarker for lung cancer), emphysema/air trapping (a biomarker for chronic obstructive pulmonary disease), and coronary artery calcification (a biomarker for cardiovascular disease) are imaging biomarkers of early stages of the Big-3 that can be acquired with low-dose computed tomography (CT). Read More
Echo Res Pract 2018 Dec 1. Epub 2018 Dec 1.
B Shelley, Anaesthesia, Pain and Critical Care Medicine, University of Glasgow, Glasgow, United Kingdom of Great Britain and Northern Ireland.
Right ventricular (RV) dysfunction occurs following lung resection and is associated with post-operative complications and long-term functional morbidity. Accurate peri-operative assessment of RV function would have utility in this population. The difficulties of trans thoracic echocardiographic (TTE) assessment of RV function may be compounded following lung resection surgery and no parameters have been validated in this patient group. Read More
Arch Pathol Lab Med 2018 Dec 14. Epub 2018 Dec 14.
From the Departments of Pathology (Dr Dintzis) and Surgery (Ms Hales and Drs Calhoun, Javid, and Byrd), University of Washington Medical Center, Seattle; Breast Surgery Clinic (Dr Harrington), Department of Pathology (Dr Tan), and Clinical Trials (Mses Fortney and Porenta), Overlake Hospital Medical Center, Bellevue, Washington; Development (Dr Miller), Clinical Operations (Mses Ishak and Gombotz), Research (Ms Hansen and Dr Parrish-Novak), and Device Development (Dr Kittle and Mr Perry), Blaze Bioscience, Inc., Seattle, Washington; and the Department of Surgery, University of Washington, Seattle (Dr Anderson).
Context.—: Resection of breast carcinoma with adequate margins reduces the risk of local recurrence and reoperation. Tozuleristide (BLZ-100) is an investigational peptide-fluorophore agent that may aid in intraoperative tumor detection and margin assessment. Read More
Arch Pathol Lab Med 2018 Dec 14. Epub 2018 Dec 14.
From the Wellman Center for Photomedicine (Drs Gardecki, Singh, and Tearney) and the Department of Pathology, Massachusetts General Hospital, Cambridge (Drs Wu and Tearney); the Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Boston (Dr Tearney); and the Department of Pathology, Harvard Medical School, Boston (Drs Wu and Tearney).
Context.—: The accuracy of needle biopsy for the detection of prostate cancer is limited by well-known sampling errors. Thus, there is an unmet need for a microscopic screening tool that can screen large regions of the prostate comprehensively for cancer. Read More
Nano Lett 2018 Dec 14. Epub 2018 Dec 14.
Highly-confined and low-loss hyperbolic phonon polaritons in hexagonal boron nitride possess properties analogous to surface plasmon polaritons, but with enhanced confinement and lower loss. Their properties have been so far mostly studied on dielectric substrates, which provide an asymmetric environment for polariton propagation, and add to damping. In this work, we investigate hyperbolic phonon polaritons over suspended hexagonal boron nitride, showing remarkable properties, including elongated polariton wavelength and reduced damping, up to 18% lower compared to dielectric-backed samples. Read More
Mol Pharm 2018 Dec 14. Epub 2018 Dec 14.
Antibody fragment F8- mediated Interleukin 10 (IL10) delivery is a novel treatment for rheumatoid arthritis (RA). F8 binds to the extra-domain-A of fibronectin (ED-A). In this study, in-vivo biodistribution and arthritis targeting of radiolabeled F8-IL10 were investigated in RA patients, followed by further animal studies. Read More
Mol Pharm 2018 Dec 14. Epub 2018 Dec 14.
Introduction Tumor hypoxia plays a major role in radio- and chemotherapy resistance in solid tumors. Carbonic AnhydraseIX (CAIX) is an endogenous hypoxia-related protein, which is associated with poor patient outcome. The quantitative assessment of CAIX expression of tumors may steer cancer treatment by predicting therapy response or patient selection for anti-hypoxia or CAIX-targeted treatment. Read More
ACS Nano 2018 Dec 14. Epub 2018 Dec 14.
Selectivity is a key parameter for building customized organic nanostructures via bottom-up approaches. Therefore, strategies are needed, which allow connecting molecular entities at a specific stage of the assembly process in a chemoselective manner. Studying the mechanisms of such reactions is the key to apply these transformations for the build-up of organic nanostructures on surfaces. Read More
Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018 Dec;32(23):1795-1797
Department of Ultrasound, Yantai Affiliated Hospital of Binzhou Medical University.
To investigate diagnostic value of ultrasonic elastic strain ratio and elasticity score for thyroid micronodules of TI-RADS 4. In total, 211 consecutive patients with 225 thyroid micronodules were enroled in the study, all the nodules were evaluated by TI-RADS criteria before and all of them were examined by elastic imaging. We set the histology as the reference standard. Read More
Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018 Dec;32(23):1767-1773
Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Beijing, 100073, China.
To analyze the imaging features of unilateral maxillary sinus nasal lesions and the selection of treatment strategies based on imaging findings for these lesions. The CT and enhanced MRI data of 64 cases of unilateral maxillary sinus and nasal lesions were selected. The imaging findings and surgery approach were observed and recorded. Read More
Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018 Sep;32(18):1409-1413
Department of Otolaryngology, the University of Hong Kong-Shenzhen Hospital, Shenzhen, 518000, China.
To study the relationship among upper airway volume of naso-pharyngeal, yelo-pharyngeal,glosso-pharyngeal, hypo-pharyngeal area which measured by spiral computed tomography three-dimensional reconstruction technique, apnea hypopnea indexes, and the lowest oxygen saturation in patients with OSAHS.①fifty-one patients with OSAHS were received polysomnography, and then were divided into groups by the AHI,LSaO₂ values. ②To measure upper airway volume at normal breath and Müller maneuver state using spiral computed tomography three-dimensional reconstruction technique of CT measurement, and to calculate volume change rate and observe the upper airway compliance. Read More
Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018 Dec;32(24):1900-1903
Department of Otolaryngology Head and Neck Surgery,Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Otolaryngology, Key Laboratory of Otolaryngology Head and Neck Surgery (Capital Medical University), Ministry of Education, Beijing, 100730,China.
The aim of this study is to investigate the effect of polyethylene glycol acrylate hybrid hydrogel degradation substance on nasal mucociliary transport system. In our experiment, the complex hydrogel were formed by the combination of different ratios of polyethyleneglycol diacrylate, chitosan and polyvinyl alcohol. The experiment was divided into four groups according to the international standard of medical devices. Read More
Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018 Dec;32(24):1876-1882
The First Hospital of Lanzhou University.
The aim of this study is to comprehensively evaluate the values of 18F-FDG PET/CT and PET in diagnosing extranodal nasal type natural killer/T cell lymphoma (ENKTL). Studies about ENKTL diagnosed by 18F-FDG PET/CT and PET until June 2018 were searched in the databases such as PubMed, Embase, Cochrane, Web of Science, CNKI, CBM, VIP and Wanfang. Two reviewers independently screened literature and extracted data strictly according to included and excluded criterion, and assessed bias risk by 11 items using QUADAS-2 gulidline. Read More
J Biomed Opt 2018 Dec;24(7):1-6
University of Strasbourg, ICube Laboratory, Strasbourg, France.
Fast estimation of optical properties from reflectance measurements at two spatial frequencies could pave way for real-time, wide-field and quantitative mapping of vital signs of tissues. We present a machine learning-based approach for estimating optical properties in the spatial frequency domain, where a random forest regression algorithm is trained over data obtained from Monte-Carlo photon transport simulations. The algorithm learns the nonlinear mapping between diffuse reflectance at two spatial frequencies, and the absorption and reduced scattering coefficient of the tissue under consideration. Read More
J Biomed Opt 2018 Dec;24(3):1-9
Dartmouth College, Thayer School of Engineering, Hanover, New Hampshire, United States.
Photoacoustic (PA) imaging is an emerging imaging technique for many clinical applications. One of the challenges posed by clinical translation is that imaging systems often rely on a finite-aperture transducer rather than a full tomography system. This results in imaging artifacts arising from an underdetermined reconstruction of the initial pressure distribution (IPD). Read More
J Biomed Opt 2018 Dec;24(2):1-11
Massachusetts Institute of Technology, Department of Mechanical Engineering, Cambridge, Massachusett, United States.
Short optical pulses emitted from a tunable Q-switched laser (800 to 2000 nm) generate laser ultrasound (LUS) signals at the surface of biological tissue. The LUS signal's acoustic frequency content, dependence on sample type, and optical wavelength are observed in the far field. The experiments yield a reference dataset for the design of noncontact LUS imaging systems. Read More
Rev Med Suisse 2018 Dec;14(631):2259-2263
Service d'orthopédie et traumatologie de l'appareil moteur, HUG, 1211 Genève 14.
Cartilaginous tumours are rare and often incidentally discovered on imaging. They can also be responsible for osteoarticular symptoms (pain, joint stiffness, deformity or fracture) and will require a clinical, radiological and a histopathological assessment. Depending on the lesion, the management may consist of observation or a complex surgical procedure that will take place after a multidisciplinary discussion including the radiologist, the pathologist and the orthopaedic surgeon. Read More
Isr Med Assoc J 2018 Dec;20(12):773-779
Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel.
Background: Because fragility fractures have an enormous impact on the practice of medicine and global health systems, effective screening is imperative. Currently, dual-energy X-ray absorptiometry (DXA), which has limited ability to predict fractures, is being used. We evaluated the current literature for a method that may constitute a better screening method to predict fragility fractures. Read More
Isr Med Assoc J 2018 Dec;20(12):749-753
Heart Institute, Kaplan Medical Center, Rehovot, Israel.
Background: Early identification of patients with a likelihood of cardiac improvement has important implications for management strategies.
Objectives: To evaluate whether tissue Doppler imaging (TDI) and two-dimensional (2D) strain measures may predict left ventricular (LV) improvement in patients with recent onset dilated cardiomyopathy (ROCM).
Methods: Clinical and comprehensive echo were performed at baseline and at 6 months. Read More
Acta Ortop Mex 2018 Jul-Aug;32(4):209-213
Unidad Médica de Alta Especialidad de Traumatología y Ortopedia «Lomas Verdes» del Instituto Mexicano del Seguro Social (IMSS). México.
Introduction: Carpal tunnel syndrome is the most common compression neuropathy of the upper limb, and the release of the median nerve is the surgical treatment that is carried out. There are several surgical techniques used to treat this condition; However, this virtual cavity, which we call the carpal tunnel, undergoes several morphological and dimensional changes, prior to surgery and after surgery using the various techniques that the surgeon has a predilection for.
Material And Methods: Observational, prospective and longitudinal study conducted in the period from March to November 2009. Read More
Korean J Ophthalmol 2018 Dec;32(6):470-477
Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Purpose: To investigate the relationship between the progression of visual field (VF) loss and changes in lamina cribrosa depth (LCD) as determined by spectral-domain optical coherence tomography (SD-OCT) enhanced depth imaging in patients with primary open angle glaucoma (POAG).
Methods: Data from 60 POAG patients (mean follow-up, 3.5 ± 0. Read More