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https://www.readbyqxmd.com/read/29220303/locally-aggressive-connective-tissue-tumors
#1
Mrinal M Gounder, David M Thomas, William D Tap
In this review, we highlight the complexities of the natural history, biology, and clinical management of three intermediate connective tissue tumors: desmoid tumor (DT) or aggressive fibromatosis, tenosynovial giant cell tumor (TGCT) or diffuse-type pigmented villonodular synovitis (dtPVNS), and giant cell tumor of bone (GCTB). Intermediate histologies include tumors of both soft tissue and bone origin and are locally aggressive and rarely metastatic. Some common aspects to these tumors are that they can be locally infiltrative and/or impinge on critical organs, which leads to disfigurement, pain, loss of function and mobility, neurovascular compromise, and occasionally life-threatening consequences, such as mesenteric, bowel, ureteral, and/or bladder obstruction...
December 8, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/29219119/density-overwrites-of-internal-tumor-volumes-in-intensity-modulated-proton-therapy-plans-for-mobile-lung-tumors
#2
Pablo Botas, Clemens Grassberger, Gregory Sharp, Harald Paganetti
The purpose of this study was to investigate Internal Tumor Volume (ITV) density overwrite strategies to minimize Intensity Modulated Proton Therapy (IMPT) plan degradation of mobile lung tumors. Four planning paradigms were compared for nine lung cancer patients. IGTV and ICTV structures were defined encompassing their respective volumes in every 4DCT phase. The paradigms use different planning CT (pCT) created from the Average Intensity Projection (AIP) of the 4DCT, overwriting the density within the IGTV to account for movement...
December 8, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29217831/the-public-health-impact-of-a-new-simple-practical-technique-for-collection-and-transfer-of-toxic-jellyfish-specimens-and-for-nematocyst-identification
#3
Lakkana Thaikruea, Sineenart Santidherakul
Our team aimed to create a new, simple, and inexpensive technique for collecting and transferring of toxic jellyfish specimens and for nematocysts identification. We collected tentacles of Chironex spp., Morbakka spp., and Physalia spp., and transferred them from the beaches by standard and by 'vacuum sticky tape' (VST) techniques. For the VST technique, our team placed the sticky tape on a tentacle and then folded it over to seal the tentacle in the equivalent of a vacuum. We kept the VST in room temperature...
December 7, 2017: Journal of Public Health Policy
https://www.readbyqxmd.com/read/29217244/intraoperative-transesophageal-and-postoperative-transthoracic-echocardiographic-evaluation-of-a-mechanical-heart-valve-prosthesis-implanted-at-aortic-position
#4
Saravana Babu, Rupa Sreedhar, Shrinivas V Gadhinglajkar, Prasanta Kumar Dash, Subin Sukesan, Vivek Pillai, Varghese T Panicker, Lovhale Pravin Shriram, Neelam Aggarwal
OBJECTIVE: The aims of this study were to evaluate the intraoperative transesophageal echocardiographic (iTEE) characteristics and Doppler flow profile of aortic Chitra heart valve prosthesis (CHVP) under stable hemodynamic and loading conditions, and to compare and correlate the iTEE data with the postoperative transthoracic echocardiography (TTE) data obtained at 48 hours (TTE1) and 3 months (TTE2) after the surgery. DESIGN: Prospective, observational study. SETTING: University-level tertiary referral hospital...
September 6, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29212105/-german-society-of-gastroenterology-digestive-and-metabolic-diseases-dgvs-position-statement-on-endoscopic-decompression-in-acute-ileus
#5
Martin Götz, Georg Braun, Ralf Jakobs, Helmut Messmann, Eduard F Stange, Markus M Lerch
In patients with ileus with dilated intestine in imaging studies, endoscopic decompression appears a feasible option. However, its use is often uncritical and without scientific evidence. Before considering endoscopic intervention, CT-imaging should differentiate between mechanical obstruction and paralytic ileus/intestinal pseudo-obstruction. Tumor diagnosis and localisation are essential because the latter determines the choice of the decompression procedure. Coecal dilatation of more than 12 cm indicates an increased risk of perforation...
December 2017: Zeitschrift Für Gastroenterologie
https://www.readbyqxmd.com/read/29211400/robot-assisted-nephropexy
#6
Guilherme Andrade Peixoto, Marcelo Langer Wroclawski, Marcio Covas Moschovas, Arie Carneiro, Milton Borrelli, José Roberto Colombo
INTRODUCTION: Renal ptosis is defined as the renal descent when there is a change from supine to orthostatic position, usually with a change of two vertebral bodies or more than five cm apart. Although rare, it is one of the causes of chronic flank pain or of upper abdomen. The typical patient of renal ptosis is young, female, thin, with complaint of pain when in an upright position (1, 2). OBJECTIVE: Demonstrate a robot-assisted nephropexy technique in a young woman diagnosed with symptomatic renal ptosis on the right kidney, confirmed by imaging tests...
December 7, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/29210980/superconducting-quantum-interferometers-for-nondestructive-evaluation
#7
REVIEW
M I Faley, E A Kostyurina, K V Kalashnikov, Yu V Maslennikov, V P Koshelets, R E Dunin-Borkowski
We review stationary and mobile systems that are used for the nondestructive evaluation of room temperature objects and are based on superconducting quantum interference devices (SQUIDs). The systems are optimized for samples whose dimensions are between 10 micrometers and several meters. Stray magnetic fields from small samples (10 µm-10 cm) are studied using a SQUID microscope equipped with a magnetic flux antenna, which is fed through the walls of liquid nitrogen cryostat and a hole in the SQUID's pick-up loop and returned sidewards from the SQUID back to the sample...
December 6, 2017: Sensors
https://www.readbyqxmd.com/read/29210275/sequestration-of-antimony-on-calcite-observed-by-time-resolved-nanoscale-imaging
#8
Francois Renard, Christine V Putnis, German Montes-Hernandez, Helen E King, Gijs D Breedveld, Gudny Okkenhaug
Antimony, which has damaging effects on the human body and the ecosystem, can be released into soils, ground- and surface waters either from ore minerals that weather in near surface environments, or due to anthropogenic releases from waste rich in antimony, a component used in batteries, electronics, ammunitions, plastics and many other industrial applications. Here, we show that dissolved Sb can interact with calcite, a widespread carbonate mineral, through a coupled dissolution-precipitation mechanism. The process is imaged in-situ, at room temperature, at the nanometer scale by using an atomic force microscope equipped with a flow-through cell...
December 6, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/29205482/low-frequency-esr-studies-on-permeable-and-impermeable-deuterated-nitroxyl-radicals-in-corn-oil-solution
#9
D David Jebaraj, Hideo Utsumi, A Milton Franklin Benial
Low frequency electron spin resonance studies were performed for 2 mM concentration of deuterated permeable and impermeable nitroxyl spin probes, 3-methoxycarbonyl-2,2,5,5-tetramethyl-pyrrolidine-1-oxyl and 3-carboxy-2,2,5,5,-tetramethyl-1-pyrrolidinyloxy in pure water and various concentrations of corn oil solution. The electron spin resonance parameters such as, the line width, hyperfine coupling constant, g-factor, rotational correlation time, permeability and partition parameter were estimated. The broadening of line width was observed for nitroxyl radicals in corn oil mixture...
December 4, 2017: Magnetic Resonance in Chemistry: MRC
https://www.readbyqxmd.com/read/29204980/usefulness-and-radiological-evaluation-of-accuracy-of-innovative-smart-hand-technique-for-pedicle-screw-placement-an-anatomical-study
#10
Ayhan Comert, İhsan Dogan, Y Sukru Çaglar
AIM: The aim of this study is to use a smartphone application during pedicle screw placement navigation and examine the accuracy of this application on anatomical dry vertebrae model. MATERIAL AND METHODS: 76 dry vertebrae were used for this study and pedicle entry points, projections of pedicle screw trajectory lines in lateral and superior aspect of vertebral body were identified and drawn for each vertebra bilaterally. In each position, all angulations were measured directly before the procedure manually...
November 1, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/29202587/focussing-on-the-foot-in-psoriatic-arthritis-pathology-and-management-options
#11
Aimie Patience, Philip S Helliwell, Heidi J Siddle
Psoriatic arthritis (PsA) is a heterogeneous chronic inflammatory arthritis characterised by a range of musculoskeletal conditions including enthesitis, dactylitis and synovitis as well as skin and nail manifestations. The foot is a complex mixture of tissues, all of which can be involved in this disease and is frequently the presenting feature. Areas covered: In this under-researched area, articles were reviewed from the authors' publications as well as from other known authors. This review will discuss how PsA affects the foot and ankle with a particular focus on synovitis, tenosynovitis, enthesitis, dactylitis, bone erosion and psoriatic skin and nail disease...
December 5, 2017: Expert Review of Clinical Immunology
https://www.readbyqxmd.com/read/29201857/a-rare-complication-of-lumbar-spinal-surgery-pneumocephalus
#12
Uğur Özdemir
A 25-year-old male patient with severe thigh and right side pain was presented. In the lumbar magnetic resonance images, there was a contrasting spinal cord tumor image with 1 cm in diameter at the level of the L3 vertebra. The patient was operated and the tumor was totally removed. All the pain of the patient recovered. The patient's postoperative two days were very comfortable and the patient was early mobilized. On the third postoperative day, the patient complained of severe headache, nausea and vomiting...
October 2017: Korean Journal of Neurotrauma
https://www.readbyqxmd.com/read/29199630/adherence-to-self-monitoring-healthy-lifestyle-behaviours-through-mobile-phone-based-ecological-momentary-assessments-and-photographic-food-records-over-6-months-in-mostly-ethnic-minority-mothers
#13
W Scott Comulada, Dallas Swendeman, Maryann K Koussa, Deborah Mindry, Melissa Medich, Deborah Estrin, Neil Mercer, Nithya Ramanathan
OBJECTIVE: Mobile phones can replace traditional self-monitoring tools through cell phone-based ecological momentary assessment (CEMA) of lifestyle behaviours and camera phone-based images of meals, i.e. photographic food records (PFR). Adherence to mobile self-monitoring needs to be evaluated in real-world treatment settings. Towards this goal, we examine CEMA and PFR adherence to the use of a mobile app designed to help mothers self-monitor lifestyle behaviours and stress. Design/Setting In 2012, forty-two mothers recorded CEMA of diet quality, exercise, sleep, stress and mood four times daily and PFR during meals over 6 months in Los Angeles, California, USA...
December 4, 2017: Public Health Nutrition
https://www.readbyqxmd.com/read/29198142/comparison-of-intercuneiform-1-2-joint-mobility-between-hallux-valgus-and-normal-feet-using-weightbearing-computed-tomography-and-3-dimensional-analysis
#14
Tadashi Kimura, Makoto Kubota, Naoki Suzuki, Asaki Hattori, Keishi Marumo
BACKGROUND: An association has been reported between hallux valgus and hypermobility of the first ray, but subluxation of the intercuneiform 1-2 joint was also suspected in some cases. However, dynamics of the intercuneiform 1-2 joint has seldom been investigated. This study used weightbearing computed tomography (CT) and a 3-dimensional (3D) analysis system to evaluate displacement of the intercuneiform 1-2 joint, intercuneiform 2-3 joint, and second cuneonavicular joint due to weightbearing in hallux valgus and normal feet...
December 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/29195556/immobilization-for-carbon-ion-beam-ablation-of-cardiac-structures-in-a-porcine-model
#15
Matthias Prall, Anna Eichhorn, Daniel Richter, H Immo Lehmann, Anna Constantinescu, Robert Kaderka, Patrick Lugenbiel, Dierk Thomas, Christoph Bert, Douglas L Packer, Marco Durante, Christian Graeff
INTRODUCTION: Whereas hadron therapy of static targets is clinically established, treatment of moving organs remains a challenge. One strategy is to minimize motion of surrounding tissue mechanically and to mitigate residual motion with an appropriate irradiation technique. In this technical note, we present and characterize such an immobilization technique for a novel noncancerous application: the irradiation of small targets in hearts with scanned carbon ion beams in a porcine model for elimination of arrhythmias...
November 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/29194779/the-pathological-kinematic-patterns-of-the-tarsal-complex-in-stage-ii-adult-acquired-flatfoot-deformity
#16
Chen Wang, Heng Wang, Shengxuan Cao, Shaobai Wang, Xin Ma, Xu Wang, Jiazhang Huang, Chao Zhang, Li Chen, Xiang Geng, Kan Wang
The in vivo kinematic characteristics of the tarsal joints during gait stance phase were still unclear in adult-acquired foot deformity (AAFD). This study included seven healthy subjects (fourteen feet) and twelve stage II AAFD patients (fourteen feet). The 3D models of tarsal bones were reconstructed based on CT scan. Each subject took standard gait on the single fluoroscopy system. Continuous lateral fluoroscopic images were collected. The key postures during the stance phase were selected. The 2D-3D registration technique was applied to explore the spatial motions of the tarsal joints in 6 degrees of freedom (DOF)...
November 30, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29193997/predicting-airport-screening-officers-visual-search-competency-with-a-rapid-assessment
#17
Stephen R Mitroff, Justin M Ericson, Benjamin Sharpe
Objective The study's objective was to assess a new personnel selection and assessment tool for aviation security screeners. A mobile app was modified to create a tool, and the question was whether it could predict professional screeners' on-job performance. Background A variety of professions (airport security, radiology, the military, etc.) rely on visual search performance-being able to detect targets. Given the importance of such professions, it is necessary to maximize performance, and one means to do so is to select individuals who excel at visual search...
November 1, 2017: Human Factors
https://www.readbyqxmd.com/read/29192151/spatially-resolved-raman-spectroscopy-of-defects-strains-and-strain-fluctuations-in-domain-structures-of-monolayer-graphene
#18
Taegeon Lee, Felisita A Mas'ud, Myung Jong Kim, Heesuk Rho
We report spatially resolved Raman scattering results of polycrystalline monolayer graphene films to study the effects of defects, strains, and strain fluctuations on the electrical performance of graphene. Two-dimensional Raman images of the integrated intensities of the G and D peaks (I G and I D) were used to identify the graphene domain boundaries. The domain boundaries were also identified using Raman images of I D/I G and I 2D/I G ratios and 2D spectral widths. Interestingly, the I D maps showed that the defects within individual domains significantly increased for the graphene with large domain size...
November 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29191000/in-vivo-imaging-of-tumor-infiltrating-immune-cells-implications-for-cancer-immunotherapy
#19
Carolien Zeelen, Carmen Paus, Derk Draper, Sandra Heskamp, Alberto Signore, Filippo Galli, Cristoph M Griessinger, Erik H Aarntzen
Dynamic interactions between tumor cells and immune cells promote the initiation, progression, metastasis and therapy-resistance of cancer. With respect to immunotherapy, immune cell populations such as cytotoxic CD8+ T-cells, CD56+ NK-cells and myeloid phagocytic cells play decisive roles. From an imaging perspective, the immune system displays unique challenges, which have implications for the design and performance of studies. The immune system comprises highly mobile cells that undergo distinct phases of development and activation...
November 30, 2017: Quarterly Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29189775/visualizing-endocytic-recycling-and-trafficking-in-live-neurons-by-subdiffractional-tracking-of-internalized-molecules
#20
Merja Joensuu, Ramon Martínez-Mármol, Pranesh Padmanabhan, Nick R Glass, Nela Durisic, Matthew Pelekanos, Mahdie Mollazade, Giuseppe Balistreri, Rumelo Amor, Justin J Cooper-White, Geoffrey J Goodhill, Frédéric A Meunier
Our understanding of endocytic pathway dynamics is restricted by the diffraction limit of light microscopy. Although super-resolution techniques can overcome this issue, highly crowded cellular environments, such as nerve terminals, can also dramatically limit the tracking of multiple endocytic vesicles such as synaptic vesicles (SVs), which in turn restricts the analytical dissection of their discrete diffusional and transport states. We recently introduced a pulse-chase technique for subdiffractional tracking of internalized molecules (sdTIM) that allows the visualization of fluorescently tagged molecules trapped in individual signaling endosomes and SVs in presynapses or axons with 30- to 50-nm localization precision...
December 2017: Nature Protocols
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