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https://www.readbyqxmd.com/read/29351997/spatiotemporal-organization-of-exocytosis-emerges-during-neuronal-shape-change
#1
Fabio L Urbina, Shawn M Gomez, Stephanie L Gupton
Neurite elongation and branching in developing neurons requires plasmalemma expansion, hypothesized to occur primarily via exocytosis. We posited that exocytosis in developing neurons and nonneuronal cells would exhibit distinct spatiotemporal organization. We exploited total internal reflection fluorescence microscopy to image vesicle-associated membrane protein (VAMP)-pHluorin-mediated exocytosis in mouse embryonic cortical neurons and interphase melanoma cells, and developed computer-vision software and statistical tools to uncover spatiotemporal aspects of exocytosis...
January 19, 2018: Journal of Cell Biology
https://www.readbyqxmd.com/read/29350579/evaluation-of-respiratory-motion-corrected-cone-beam-ct-at-end-expiration-in-abdominal-radiotherapy-sites-a-prospective-study
#2
Russell E Kincaid, Agung E Hertanto, Yu-Chi Hu, Abraham J Wu, Karyn A Goodman, Hai D Pham, Ellen D Yorke, Qinghui Zhang, Qing Chen, Gig S Mageras
BACKGROUND: Cone beam computed tomography (CBCT) for radiotherapy image guidance suffers from respiratory motion artifacts. This limits soft tissue visualization and localization accuracy, particularly in abdominal sites. We report on a prospective study of respiratory motion-corrected (RMC)-CBCT to evaluate its efficacy in localizing abdominal organs and improving soft tissue visibility at end expiration. MATERIAL AND METHODS: In an IRB approved study, 11 patients with gastroesophageal junction (GEJ) cancer and five with pancreatic cancer underwent a respiration-correlated CT (4DCT), a respiration-gated CBCT (G-CBCT) near end expiration and a one-minute free-breathing CBCT scan on a single treatment day...
January 19, 2018: Acta Oncologica
https://www.readbyqxmd.com/read/29349638/innovation-in-3d-echocardiographic-imaging
#3
REVIEW
Pei-Ni Jone, Nee Khoo
PURPOSE OF REVIEW: The purpose of this review is to detail three-dimensional echocardiographic (3DE) innovations in pre-surgical planning of congenital heart disease, guidance of catheter interventions such as fusion imaging, and functional assessment of patients with congenital heart disease. RECENT FINDINGS: Innovations in 3DE have helped us delineate the details of atrioventricular valve function and understand the mechanism of atrioventricular valve failure in patients with atrioventricular septal defect and single ventricle post repair...
January 19, 2018: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/29349617/use-of-venovenous-ecmo-for-neonatal-and-pediatric-ecmo-a-decade-of-experience-at-a-tertiary-children-s-hospital
#4
Jennifer L Carpenter, Yangyang R Yu, Darrell L Cass, Oluyinka O Olutoye, James A Thomas, Cole Burgman, Caraciolo J Fernandes, Timothy C Lee
BACKGROUND: Advances in extracorporeal membrane oxygenation (ECMO) have led to increased use of venovenous (VV) ECMO in the pediatric population. We present the evolution and experience of pediatric VV ECMO at a tertiary care institution. METHODS: A retrospective cohort study from 01/2005 to 07/2016 was performed, comparing by cannulation mode. Survival to discharge, complications, and decannulation analyses were performed. RESULTS: In total, 160 patients (105 NICU, 55 PICU) required 13 ± 11 days of ECMO...
January 18, 2018: Pediatric Surgery International
https://www.readbyqxmd.com/read/29349363/a-novel-technique-combining-laparoscopic-and-endovascular-approaches-using-image-fusion-guidance-for-anterior-embolization-of-type-ii-endoleak
#5
M Mujeeb Zubair, Ponraj Chinnadurai, Francis E Loh, Thomas M Loh, Alan B Lumsden, Carlos F Bechara
Type II endoleak (T2E) leading to aneurysm sac enlargement is one of the challenging complications associated with endovascular aneurysm repair. Recent guidelines recommend embolization of T2E associated with aneurysmal sac enlargement. Various percutaneous and endovascular techniques have been reported for embolization of T2E. We report a novel technique for T2E embolization combining laparoscopic and endovascular approaches using preoperative image fusion. We believe our technique provides a more direct access to the lumbar feeding vessels that is typically challenging with transarterial or translumbar embolization techniques...
March 2017: Journal of Vascular Surgery Cases and Innovative Techniques
https://www.readbyqxmd.com/read/29346720/nanoscale-control-of-molecular-self-assembly-induced-by-plasmonic-hot-electron-dynamics
#6
Sabrina Simoncelli, Yi Li, Emiliano Cortes, Stefan A Maier
Self-assembly processes allow designing and creating complex nanostructures using molecules as building blocks and surfaces as scaffolds. This autonomous driven construction is possible due to a complex thermodynamic balance of molecule-surface interactions. As such, nanoscale guidance and control over this process is hard to achieve. Here we use the highly localized light-to-chemical-energy conversion of plasmonic materials to spatially cleave Au-S bonds on pre-determined locations within a single nanoparticle, enabling a high degree of control over this archetypal system for molecular self-assembly...
January 18, 2018: ACS Nano
https://www.readbyqxmd.com/read/29345604/a-new-approach-of-three-dimensional-guidance-in-paediatric-cath-lab-segmented-and-tessellated-heart-models-for-cardiovascular-interventions-in-chd
#7
Nicole Ehret, Muhannad Alkassar, Sven Dittrich, Robert Cesnjevar, André Rüffer, Michael Uder, Oliver Rompel, Matthias Hammon, Martin Glöckler
BACKGROUND: Optimal imaging is essential for catheter-based interventions in CHD. The three-dimensional models in volume-rendering technique currently in use are not standardised. This paper investigates the feasibility and impact of novel three-dimensional guidance with segmented and tessellated three-dimensional heart models in catheterisation of CHD. In addition, a nearly radiation-free two- to three-dimensional registration and a biplane overlay were used. Methods and results We analysed 60 consecutive cases in which segmented tessellated three-dimensional heart models were merged with live fluoroscopy images and aligned using the tracheal bifurcation as a fiducial mark...
January 18, 2018: Cardiology in the Young
https://www.readbyqxmd.com/read/29344739/what-we-have-learned-from-the-recent-meta-analyses-on-diagnostic-methods-for-atherosclerotic-plaque-regression
#8
REVIEW
Giuseppe Biondi-Zoccai, Simona Mastrangeli, Enrico Romagnoli, Mariangela Peruzzi, Giacomo Frati, Leonardo Roever, Arturo Giordano
PURPOSE OF REVIEW: Atherosclerosis has major morbidity and mortality implications globally. While it has often been considered an irreversible degenerative process, recent evidence provides compelling proof that atherosclerosis can be reversed. Plaque regression is however difficult to appraise and quantify, with competing diagnostic methods available. Given the potential of evidence synthesis to provide clinical guidance, we aimed to review recent meta-analyses on diagnostic methods for atherosclerotic plaque regression...
January 17, 2018: Current Atherosclerosis Reports
https://www.readbyqxmd.com/read/29344699/feasibility-study-of-mr-guided-transgluteal-targeted-in-bore-biopsy-for-suspicious-lesions-of-the-prostate-at-3-tesla-using-a-freehand-approach
#9
Frank Fischbach, Lukas Wien, Sascha Krueger, Bernhard Schnackenburg, Daniel Baumunk, Björn Friebe, Martin Schostak, Jens Ricke, Katharina Fischbach
OBJECTIVE: The aim of our study was (1) to establish an in-bore targeted biopsy of suspicious prostate lesions, avoiding bowel penetration using a transgluteal approach and (2) to assess operator setup, patient comfort and safety aspects in the clinical setting for freehand real-time MR-guidance established for percutaneous procedures in an open MR-scanner. MATERIAL AND METHODS: 30 patients with suspect prostate lesions were biopsied in a cylindrical 3T-MRI system using a transgluteal approach in freehand technique...
January 17, 2018: European Radiology
https://www.readbyqxmd.com/read/29344564/endoscopic-ultrasound-guided-needle-based-confocal-laser-endomicroscopy-in-solid-pancreatic-masses-a-prospective-validation-study
#10
John Gásdal Karstensen, Tatiana Cârţână, Codruţa Constantinescu, Silviu Dumitrașcu, Bojan Kovacevic, Pia Klausen, Hazem Hassan, Tobias Wirenfeldt Klausen, Helga Bertani, Manoop S Bhutani, Adrian Săftoiu, Peter Vilmann
Background and study aims:  Endoscopic ultrasound fine-needle aspiration (EUS-FNA) is a keystone in diagnosing and staging of pancreatic masses. Recently, a microfiber that can pass through a 19-gauge needle has been introduced for confocal laser endomicroscopy (nCLE). The aims of this study were to evaluate the diagnostic value and the reproducibility of nCLE criteria for solid malignant lesions. Patients and methods:  This prospective dual-center study included patients with pancreatic masses suspicious of malignancy referred for EUS-FNA...
January 2018: Endoscopy International Open
https://www.readbyqxmd.com/read/29343976/epidemiology-associated-burden-and-current-clinical-practice-for-the-diagnosis-and-management-of-alzheimer-s-disease-in-japan
#11
REVIEW
William Montgomery, Kaname Ueda, Margaret Jorgensen, Shari Stathis, Yuanyuan Cheng, Tomomi Nakamura
The burden of dementia in Japan is large and growing. With the world's fastest aging population, it is estimated that one in five elderly people will be living with dementia in Japan by 2025. The most common form of dementia is Alzheimer's disease (AD), accounting for around two-thirds of dementia cases. A systematic review was conducted to examine the epidemiology and associated burden of AD in Japan and to identify how AD is diagnosed and managed in Japan. English and Japanese language databases were searched for articles published between January 2000 and November 2015...
2018: ClinicoEconomics and Outcomes Research: CEOR
https://www.readbyqxmd.com/read/29343145/principles-of-focused-ultrasound-and-mr-guided-focused-ultrasound-for-liver
#12
Senay Mihcin, Andreas Melzer
Focused ultrasound (FUS/HIFU) relies on ablation of pathological tissues by delivering a sufficiently high level of acoustic energy in situ of the human body. Magnetic Resonance guided FUS (MRgFUS/HIFU) and Ultrasound guided (USgFUS/HIFU) are image guided techniques combined with therapeutic FUS for monitoring purposes. The principles and technologies of FUS/HiFU are described in this paper including the basics of MR guidance techniques and MR temperature mapping. Clinical applications of FUS/HIFU gained CE and FDA approvals for the treatment of various benign and few malignant lesions in the last two decades...
January 18, 2018: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/29343137/hybrid-aortic-arch-and-frozen-elephant-trunk-reconstruction-bridging-the-gap-between-conventional-and-total-endovascular-arch-repair
#13
Sabin J Bozso, Abigail White, Jeevan Nagendran, Michael C Moon, Michael W A Chu
Novel endovascular techniques hope to offer patients aortic arch repair with reduced morbidity compared to conventional arch surgery; however, current endovascular strategies remain challenged by the proximal seal zone, higher stroke rates, long-term durability and select anatomy. Hybrid arch repair offers patients a less invasive alternative that can treat more distal aorta than conventional arch repair yet still be performed via standard sternotomy. Areas Covered: This review will discuss the current evidence and future development of hybrid aortic arch and frozen elephant trunk reconstruction...
January 18, 2018: Expert Review of Cardiovascular Therapy
https://www.readbyqxmd.com/read/29342490/detection-of-early-neoplasia-in-barrett-s-esophagus-using-lectin-based-near-infrared-imaging-an-ex-vivo-study-on-human-tissue
#14
André A Neves, Massimiliano Di Pietro, Maria O'Donovan, Dale J Waterhouse, Sarah E Bohndiek, Kevin M Brindle, Rebecca C Fitzgerald
BACKGROUND AND STUDY AIMS:  Endoscopic surveillance for Barrett's esophagus (BE) is limited by long procedure times and sampling error. Near-infrared (NIR) fluorescence imaging minimizes tissue autofluorescence and optical scattering. We assessed the feasibility of a topically applied NIR dye-labeled lectin for the detection of early neoplasia in BE in an ex vivo setting. METHODS:  Consecutive patients undergoing endoscopic mucosal resection (EMR) for BE-related early neoplasia were recruited...
January 17, 2018: Endoscopy
https://www.readbyqxmd.com/read/29341161/modalities-for-image-and-molecular-guided-cancer-surgery
#15
REVIEW
M A Stammes, S L Bugby, T Porta, K Pierzchalski, T Devling, C Otto, J Dijkstra, A L Vahrmeijer, L-F de Geus-Oei, J S D Mieog
BACKGROUND: Surgery is the cornerstone of treatment for many solid tumours. A wide variety of imaging modalities are available before surgery for staging, although surgeons still rely primarily on visual and haptic cues in the operating environment. Image and molecular guidance might improve the adequacy of resection through enhanced tumour definition and detection of aberrant deposits. Intraoperative modalities available for image- and molecular-guided cancer surgery are reviewed here...
January 2018: British Journal of Surgery
https://www.readbyqxmd.com/read/29341032/-epidemiology-diagnosis-and-treatment-of-adult-patients-with-nosocomial-pneumonia-update-2017-s3-guideline-of-the-german-society-for-anaesthesiology-and-intensive-care-medicine-the-german-society-for-infectious-diseases-the-german-society-for-hygiene-and-microbiology
#16
K Dalhoff, M Abele-Horn, S Andreas, M Deja, S Ewig, P Gastmeier, S Gatermann, H Gerlach, B Grabein, C P Heußel, G Höffken, M Kolditz, E Kramme, H Kühl, C Lange, K Mayer, I Nachtigall, M Panning, M Pletz, P-M Rath, G Rohde, S Rosseau, B Schaaf, D Schreiter, H Schütte, H Seifert, C Spies, T Welte
Nosocomial pneumonia (HAP) is a frequent complication of hospital care. Most data are available on ventilator-associated pneumonia. However, infections on general wards are increasing. A central issue are infections with multidrug resistant (MDR) pathogens which are difficult to treat in the empirical setting potentially leading to inappropriate use of antimicrobial therapy.This guideline update was compiled by an interdisciplinary group on the basis of a systematic literature review. Recommendations are made according to GRADE giving guidance for the diagnosis and treatment of HAP on the basis of quality of evidence and benefit/risk ratio...
January 2018: Pneumologie
https://www.readbyqxmd.com/read/29340290/tailoring-four-dimensional-cone-beam-ct-acquisition-settings-for-fiducial-marker-based-image-guidance-in-radiation-therapy
#17
Peng Jin, Niek van Wieringen, Maarten C C M Hulshof, Arjan Bel, Tanja Alderliesten
Use of four-dimensional cone-beam CT (4D-CBCT) and fiducial markers for image guidance during radiation therapy (RT) of mobile tumors is challenging due to the trade-off among image quality, imaging dose, and scanning time. This study aimed to investigate different 4D-CBCT acquisition settings for good visibility of fiducial markers in 4D-CBCT. Using these 4D-CBCTs, the feasibility of marker-based 4D registration for RT setup verification and manual respiration-induced motion quantification was investigated...
April 2018: Journal of Medical Imaging
https://www.readbyqxmd.com/read/29339848/habitual-patellar-dislocation-in-children-results-of-surgical-treatment-by-modified-four-in-one-technique
#18
Ravi Mittal, Avtar Singh Balawat, Vikrant Manhas, Amit Roy, Navin Kumar Singh
Background: Habitual patellar dislocation is a rare condition affecting children. The growth plates are open in children and any surgical intervention should take that in to consideration. We are describing a modified four in one technique for habitual patellar dislocation, which is a soft tissue procedure without the use of any implant. Method: In this study we included 6 children (4 females and 2 males) with open growth plates, which were diagnosed with habitual patellar dislocation...
November 2017: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/29339115/toddler-drinks-formulas-and-milks-labeling-practices-and-policy-implications
#19
Jennifer L Pomeranz, Maria J Romo Palafox, Jennifer L Harris
Toddler drinks are a growing category of drinks marketed for young children 9-36 months old. Medical experts do not recommend them, and public health experts raise concerns about misleading labeling practices. In the U.S., the toddler drink category includes two types of products: transition formulas, marketed for infants and toddlers 9-24 months; and toddler milks, for children 12-36 months old. The objective of this study was to evaluate toddler drink labeling practices in light of U.S. food labeling policy and international labeling recommendations...
January 12, 2018: Preventive Medicine
https://www.readbyqxmd.com/read/29336288/how-often-is-sinus-surgery-performed-for-chronic-rhinosinusitis-with-versus-without-nasal-polyps
#20
Elisabeth H Ference, Jeffrey D Suh, Bruce K Tan, Stephanie Shintani Smith
BACKGROUND: There currently are no data on the relative frequency of endoscopic sinus surgeries (ESS) performed for chronic rhinosinusitis with nasal polyposis (CRSwNP) versus chronic rhinosinusitis without nasal polyposis (CRSsNP) in the United States. OBJECTIVES: To compare the rate of surgical interventions for CRSwNP and CRSsNP. METHODS: Cases identified by CPT codes were extracted from the 2009-2011 State Ambulatory Surgery Databases for California, Florida, Maryland, and New York...
January 1, 2018: American Journal of Rhinology & Allergy
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