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https://www.readbyqxmd.com/read/28732269/gyral-net-a-new-representation-of-cortical-folding-organization
#1
Hanbo Chen, Yujie Li, Fangfei Ge, Gang Li, Dinggang Shen, Tianming Liu
One distinct feature of the cerebral cortex is its convex (gyri) and concave (sulci) folding patterns. Due to the remarkable complexity and variability of gyral/sulcal shapes, it has been challenging to quantitatively model their organization patterns. Inspired by the observation that the lines of gyral crests can form a connected graph on each brain hemisphere, we propose a new representation of cortical gyri/sulci organization pattern - gyral net, which models cortical architecture from a graph perspective, starting with nodes and edges obtained from the reconstructed cortical surfaces...
July 15, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28731365/chemical-composition-and-antimigraine-activity-of-essential-oil-of-angelicae-dahuricae-radix
#2
Jingbo Sun, He Li, Jinghui Sun, Huimin Liu, Jianguang Chen, Chunmei Wang
The aim of this study was to explore the chemical composition and the effect of essential oil of Angelicae dahuricae radix on a nitroglycerin (NTG)-induced rat model of migraine. The CO2 supercritical fluid extraction method was optimized for the extraction of essential oil of A. dahuricae radix (EOAD) and its chemical composition was determined. The migraine model was established by subcutaneous injection of NTG (10 mg/kg) 1 h after the last administration of EOAD. The therapeutic effect of EOAD and its underlying mechanism were assessed by monitoring behavioral changes, levels of nitric oxide (NO) in serum and brain tissues, plasma levels of calcitonin gene-related peptide (CGRP) and endothelin (ET), and ET/NO ratio...
July 21, 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28730531/comparing-different-tissue-engineered-repair-materials-for-the-treatment-of-pelvic-organ-prolapse-and-urinary-incontinence-which-material-is-better
#3
Xiaojuan Wang, Yisong Chen, Zhongyong Fan, Keqin Hua
INTRODUCTION AND HYPOTHESIS: Synthetic non-absorbable meshes are widely used to augment surgical repair of pelvic organ prolapse (POP) and stress urinary incontinence (SUI), but these meshes are associated with serious complications. This study compares the attachment and extracellular matrix (ECM) production of adipose-derived stem cells (ADSCs) on different biodegradable nanomaterials to develop tissue engineered repair materials. METHODS: Rat ADSCs were isolated and cultured on electrospun poly-L-lactic acid (PLA) and electrospun poly(L-lactide)-trimethylene carbonate-gycolide (PLTG) terpolymers for 1 and 2 weeks...
July 20, 2017: International Urogynecology Journal
https://www.readbyqxmd.com/read/28730275/comparative-analysis-of-open-and-robotic-transversus-abdominis-release-for-ventral-hernia-repair
#4
James G Bittner, Sameer Alrefai, Michelle Vy, Micah Mabe, Paul A R Del Prado, Natasha L Clingempeel
BACKGROUND: Transversus abdominis release (TAR) is a safe, effective strategy to repair complex ventral incisional hernia (VIH); however, open TAR (o-TAR) often necessitates prolonged hospitalization. Robot-assisted TAR (r-TAR) may benefit short-term outcomes and shorten convalescence. This study compares 90-day outcomes of o-TAR and r-TAR for VIH repair. METHODS: A single-center, retrospective review of patients who underwent o-TAR or r-TAR for VIH from 2015 to 2016 was conducted...
July 20, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28730072/effects-of-lens-extirpation-with-anterior-vitrectomy-on-vitreous-three-dimensional-mesh-structure
#5
Yan Zhao, Long-Fang Zhou, Hong Yang
AIM: To investigate the changes in vitreous gel structure after lens extirpation combined with anterior vitrectomy in rabbit eyes. METHODS: Twenty-eight chinchilla rabbits were divided into three groups. The control group (Group I) included 16 eyes from eight rabbits who did not receive any treatment. Group II included 20 eyes from 10 rabbits that underwent lens aspiration only. Group III included 20 eyes from 10 rabbits that underwent lens aspiration combined with posterior capsulotomy and anterior vitrectomy...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28729881/outcomes-following-repair-of-incarcerated-and-strangulated-ventral-hernias-with-or-without-synthetic-mesh
#6
Sameh Hany Emile, Hesham Elgendy, Ahmad Sakr, Waleed Ahmed Gado, Ahmed Aly Abdelmawla, Mahmoud Abdelnaby, Alaa Magdy
BACKGROUND: The use of synthetic mesh for ventral hernia repair under contaminated conditions is a controversial issue due to the considerable risk of surgical site infection (SSI). This study aimed to review the outcomes of repair of incarcerated and strangulated ventral hernias with or without synthetic mesh in compliance with established clinical guidelines regarding the incidence of SSI and hernia recurrence. METHODS: The records of patients with complicated ventral hernias who were treated with or without synthetic mesh repair were reviewed...
2017: World Journal of Emergency Surgery: WJES
https://www.readbyqxmd.com/read/28729133/hybrid-framework-for-feasible-modeling-of-an-edge-illumination-x-ray-phase-contrast-imaging-system-at-a-human-scale
#7
Bartłomiej Włodarczyk, Jakub Pietrzak
Here, we present a hybrid approach for simulating an edge illumination X-ray phase-contrast imaging (EIXPCi) set-up using graphics processor units (GPU) with a high degree of accuracy. In this study, the applicability of pixel, mesh and non-uniform rational B-splines (NURBS) objects to carry out realistic maps of X-ray phase-contrast distribution at a human scale is accounted for by using numerical anthropomorphic phantoms and a very fast and robust simulation framework which integrates total interaction probabilities along selected X-ray paths...
July 17, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28728867/finite-element-analysis-of-tavi-impact-of-native-aortic-root-computational-modeling-strategies-on-simulation-outcomes
#8
Alice Finotello, Simone Morganti, Ferdinando Auricchio
In the last few years, several studies, each with different aim and modeling detail, have been proposed to investigate transcatheter aortic valve implantation (TAVI) with finite elements. The present work focuses on the patient-specific finite element modeling of the aortic valve complex. In particular, we aim at investigating how different modeling strategies in terms of material models/properties and discretization procedures can impact analysis results. Four different choices both for the mesh size (from  20 k elements to  200 k elements) and for the material model (from rigid to hyperelastic anisotropic) are considered...
July 17, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28728865/mass-spring-models-for-the-simulation-of-mitral-valve-function-looking-for-a-trade-off-between-reliability-and-time-efficiency
#9
O A Pappalardo, F Sturla, F Onorati, G Puppini, M Selmi, G B Luciani, G Faggian, A Redaelli, E Votta
Patient-specific finite element (FE) models can assess the impact of mitral valve (MV) repair on the complex MV anatomy and function. However, FE excessive time requirements hamper their use for surgical planning; mass-spring models (MSMs) represent a more approximate approach but can provide almost real-time simulations. On this basis, we implemented MSMs of three healthy MVs from cardiac magnetic resonance (cMR) imaging to simulate the systolic MV closure, including the in vivo papillary muscles and annular kinematics, and the anisotropic and non-linear mechanical response of MV tissues...
July 17, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28728802/-psychotherapies-for-the-treatment-of-phantom-limb-pain
#10
Katherine Cárdenas, Mariana Aranda
INTRODUCTION: The phantom limb pain has been described as a condition in which patients experience a feeling of itching, spasm or pain in a limb or body part that has been previously amputated. Such pain can be induced by a conflict between the representation of the visual and proprioceptive feedback of the previously healthy limb. The phantom limb pain occurs in at least 42 to 90% of amputees. Regular drug treatment of phantom limb pain is almost never effective. METHODS: A systematic review of the literature was conducted in Medline and Cochrane using the MESH terms "phantom limb pain" and "psychotherapy", published in the last 10 years, in English and Spanish, finding 49 items...
July 2017: Revista Colombiana de Psiquiatría
https://www.readbyqxmd.com/read/28728682/-statin-and-risk-of-falls-in-the-elderly-a-sytematic-review-of-the-literature
#11
Luis Carlos Venegas Sanabria, Stephany Barbosa Balaquera, Ana María Suarez Acosta, Ángel Alberto García Peña, Carlos Alberto Cano Gutiérrez
BACKGROUND: With the high incidence of cardiovascular events in the elderly population the effectiveness of statins in reducing mortality from coronary events has been demonstrated. However, there have been adverse effects, such as myalgia, myopathy, myonecrosis, not to mention the falls as a result of muscle damage with statin use. OBJECTIVE: The purpose of this study is to conduct a systematic review to assess the literature on the association between statin use and the risk of falls...
July 17, 2017: Revista Española de Geriatría y Gerontología
https://www.readbyqxmd.com/read/28728537/super-selective-coil-embolization-of-a-basilar-perforator-artery-aneurysm-previously-treated-by-the-stent-in-stent-technique-using-an-extremely-soft-bare-coil-delivered-through-a-one-marker-microcatheter
#12
Yves Chau, Marina Sachet, Jacques Sédat
Background Aneurysms of the perforating arteries arising from the basilar artery trunk are rare and represent a therapeutic challenge. Methods A basilar perforator aneurysm was initially treated by the stent-in-stent technique. Enlargement of the aneurysm was seen on follow up and the sac was secondarily coiled using two extremely soft bare coils, delivered through a one-marker microcatheter. Results At 6 months, the patient had a modified Rankin Scale score of 0 and cerebral arteriography demonstrated complete occlusion of the lesion...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28728303/-enhancing-soft-tissue-reattachment-with-artificial-mesh-in-joint-endoprosthetic-reconstruction-for-bone-tumors
#13
J S Lin, R Chen, W Yan, D D Chen
Objective: To investigate the operative method and clinical application of the BARD(®) Mesh in enhancing joint stability and function of endoprosthetic reconstruction for bone tumors. Methods: From Jan 2013 to Jun 2015, the clinical data of 51 patients aged (44.75±23.18) years underwent wide resection of tumor and endoprosthetic reconstruction using the BARD(®) Mesh were collected. Among them, 27 were male and 24 were female. The surgical treatments received by these patients included 5 shoulder arthroplasties, 12 elbow replacements, 12 hip replacements and 32 knee replacements (including 24 femoral tumors and 8 tibial tumors)...
July 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/28727377/laparoscopic-pectopexy-initial-experience-of-single-center-with-a-new-technique-for-apical-prolapse-surgery
#14
Ahmet Kale, Alper Biler, Hasan Terzi, Taner Usta, Ebru Kale
OBJECTIVE: To share our first experience with laparoscopic pectopexy, a new technique for apical prolapse surgery, and to evaluate the feasibility of this technique. MATERIALS AND METHODS: Seven patients with apical prolapse underwent surgery with laparoscopic pectopexy. The lateral parts of the iliopectineal ligament were used for a bilateral mesh fixation of the descended structures. The medical records of the patients were reviewed, and the short-term clinical outcomes were analyzed...
June 14, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28727317/laparoscopic-transabdominal-preperitoneal-approach-for-umbilical-hernia-with-rectus-diastasis
#15
Sante Capitano
INTRODUCTION: Rectus diastasis, when coexistent with umbilical hernia, can benefit from mesh-based repair of the midline. Laparoscopic correction of an umbilical hernia involves the placement of a mesh in the peritoneal cavity, but this comes with the risk of bowel complications. However, newly developed dual-sided composite meshes have helped to reduce this risk. MATERIALS AND SURGICAL TECHNIQUE: Four men and three women with umbilical hernia and rectus diastasis were treated with laparoscopic transabdominal preperitoneal repair...
August 2017: Asian Journal of Endoscopic Surgery
https://www.readbyqxmd.com/read/28727316/primary-inguinal-hernia-the-open-repair-today-pros-and-cons
#16
REVIEW
Giampiero Campanelli, Piero Giovanni Bruni, Andrea Morlacchi, Francesca Lombardo, Marta Cavalli
Open anterior repair for inguinal hernia offers several distinct advantages over endoscopic repair, especially when real-world effectiveness is taken into account. The learning curve for endoscopic techniques is long, whereas the Lichtenstein and other open tension-free techniques are easier to teach and replicate at all levels. The outcomes of Lichtenstein repairs for primary inguinal hernia as performed by non-experts and supervised residents are comparable to those of experts. Moreover, open tension-free repair does not require expensive instruments or dedicated equipment, other than the prosthetic mesh...
August 2017: Asian Journal of Endoscopic Surgery
https://www.readbyqxmd.com/read/28727128/transvaginal-six-arm-mesh-opur-in-women-with-apical-pelvic-organ-prolapse-analysis-of-short-term-results-pelvic-floor-ultrasound-evaluation
#17
Tomasz Kluz, Edyta Wlaźlak, Grzegorz Surkont
OBJECTIVES: Analysis of feasibility, efficacy and short-term results after six-arm transvaginal mesh OPUR implantation in women with apical prolapse. MATERIAL AND METHODS: The same surgeon operated all of 39 women using mesh OPUR. Preoperatively patients had a standardized interview and clinical examination. Intraoperative and postoperative complications were analyzed. Postoperative evaluation included standardized interview, clinical examination and standardized pelvic floor ultrasound performed with 2D transvaginal probe and 4D abdominal probe...
2017: Ginekologia Polska
https://www.readbyqxmd.com/read/28726148/first-human-use-of-hybrid-synthetic-biologic-mesh-in-ventral-hernia-repair-a-multicenter-trial
#18
James G Bittner, Kevin El-Hayek, Andrew T Strong, Melissa Phillips LaPinska, Jin S Yoo, Eric M Pauli, Matthew Kroh
BACKGROUND: Mesh options for reinforcement of ventral/incisional hernia (VIH) repair include synthetic or biologic materials. While each material has known advantages and disadvantages, little is understood about outcomes when these materials are used in combination. This multicenter study reports on the first human use of a novel synthetic/biologic hybrid mesh (Zenapro(®) Hybrid Hernia Repair Device) for VIH repair. METHODS: This prospective, multicenter post-market clinical trial enrolled consecutive adults who underwent elective VIH repair with hybrid mesh placed in the intraperitoneal or retromuscular/preperitoneal position...
July 19, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28725251/custom-made-micro-applicators-for-high-dose-rate-brachytherapy-treatment-of-chronic-psoriasis
#19
Ivan M Buzurovic, Desmond A O'Farrell, Mandar S Bhagwat, Jorgen L Hansen, Thomas C Harris, Scott Friesen, Robert A Cormack, Phillip M Devlin
PURPOSE: In this study, we present the treatment of the psoriatic nail beds of patients refractory to standard therapies using high-dose-rate (HDR) brachytherapy. The custom-made micro applicators (CMMA) were designed and constructed for radiation dose delivery to small curvy targets with complicated topology. The role of the HDR brachytherapy treatment was to stimulate the T cells for an increased immune response. MATERIAL AND METHODS: The patient diagnosed with psoriatic nail beds refractory to standard therapies received monthly subunguinal injections that caused significant pain and discomfort in both hands...
June 2017: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/28723719/clinical-application-of-a-transurethral-holmium-laser-excision-of-exposed-polypropylene-mesh-at-lower-urinary-tract-single-surgeon-experience-with-long-term-follow-up
#20
Chan Ho Lee, Ja Yoon Ku, Kyoung Lee, Jeong Zoo Lee, Dong Gil Shin
PURPOSE: The aim of this study was to evaluate the clinical application of a transurethral holmium laser excision of exposed polypropylene mesh as an effective minimally invasive surgical approach in patients with lower urinary tract mesh erosion following the transvaginal placement of polypropylene mesh. METHODS: A retrospective analysis was conducted on the data of 22 patients with exposed polypropylene mesh in the lower urinary tract that was managed using the transurethral holmium laser technique...
July 19, 2017: Female Pelvic Medicine & Reconstructive Surgery
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