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https://www.readbyqxmd.com/read/28449461/correlation-of-pleural-effusions-grayscale-sonographic-parameters-with-fluid-s-analysis-results
#1
Alexandros Kalkanis, Charalampos Varsamas, Konstantinos Gourgoulianis
BACKGROUND: Quantitative sonographic methods are used to assess pleural fluid's volume but no validated method exists for the measurement of the fluids' density and other qualitative values. We suggest a quantitative method, based on the pixel density of the pleural effusion's image, in order to evaluate the echogenicity of pleural effusion. METHODS: Pleural ultrasound (US) was performed in 62 patients with pleural effusion. Five consequent images of the pleural effusion were retrieved through axial view between the 9(th) and the 10(th) rib and one from the 10(th) rib through coronal view and converted into the high-resolution tagged image file format...
March 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28449356/fetal-head-circumference-and-subpubic-angle-are-independent-risk-factors-for-unplanned-cesarean-and-operative-delivery
#2
Giuseppe Rizzo, Elisa Aiello, Costanza Bosi, Francesco D' Antonio, Domenico Arduini
INTRODUCTION: To ascertain whether combined ultrasound assessment of fetal head circumference (HC) and maternal subpubic angle (SPA) prior to the onset of labour may predict the likelihood of an unplanned operative delivery (UOD) in nulliparous women at term. MATERIAL AND METHODS: Prospective cohort study of singleton pregnancies in cephalic presentation. Pregnancies experiencing UOD secondary to fetal distress were excluded. HC was assessed transabdominally while SPA values were obtained from a reconstructed coronal plane on three-dimensional(3D) ultrasound performed trans-labially at 36-38 weeks of gestation...
April 27, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28447632/a-universal-model-for-solar-eruptions
#3
Peter F Wyper, Spiro K Antiochos, C Richard DeVore
Magnetically driven eruptions on the Sun, from stellar-scale coronal mass ejections to small-scale coronal X-ray and extreme-ultraviolet jets, have frequently been observed to involve the ejection of the highly stressed magnetic flux of a filament. Theoretically, these two phenomena have been thought to arise through very different mechanisms: coronal mass ejections from an ideal (non-dissipative) process, whereby the energy release does not require a change in the magnetic topology, as in the kink or torus instability; and coronal jets from a resistive process involving magnetic reconnection...
April 26, 2017: Nature
https://www.readbyqxmd.com/read/28446871/prevalence-of-joint-gait-patterns-defined-by-a-delphi-consensus-study-is-related-to-gross-motor-function-topographical-classification-weakness-and-spasticity-in-children-with-cerebral-palsy
#4
Angela Nieuwenhuys, Eirini Papageorgiou, Simon-Henri Schless, Tinne De Laet, Guy Molenaers, Kaat Desloovere
During a Delphi consensus study, a new joint gait classification system was developed for children with cerebral palsy (CP). This system, whose reliability and content validity have previously been established, identified 49 distinct joint patterns. The present study aims to provide a first insight toward the construct validity and clinical relevance of this classification system. The retrospective sample of convenience consisted of 286 patients with spastic CP (3-18 years old, GMFCS levels I-III, 166 with bilateral CP)...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28445374/treatment-of-isolated-zygomatic-arch-fracture-improved-outcomes-with-external-splinting
#5
David I Hindin, Corbin E Muetterties, Chirag Mehta, Stefanos Boukovalas, Justine C Lee, James P Bradley
BACKGROUND: The various approaches to reduction and fixation of isolated displaced zygomatic arch fractures have not been well studied. The authors compared established treatment methods for zygomatic arch fractures for both aesthetic and functional outcomes. METHODS: Consecutive patients with isolated zygomatic arch fractures with a minimum of 6 months' follow-up were studied in five groups: group 1, intraoral approach (no fixation); group 2, temporal approach (no fixation); group 3, coronal flap plate fixation; group 4, external splint fixation; and group 5, no surgery...
May 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28445234/safe-new-approach-to-the-lingual-flap-management-in-mandibular-augmentation-procedures-the-digitoclastic-technique
#6
Roberto Pistilli, Vittorio Checchi, Gilberto Sammartino, Massimo Simion, Pietro Felice
PURPOSE: This article describes the digitoclastic technique, an innovative procedure for coronal displacement of the lingual flap. The new technique has the potential to obtain primary flap closure without surgical risks to the anatomical structures on the lingual side of the mandible. MATERIALS AND METHODS: Reconstruction of an atrophic mandible with guided tissue regeneration (guided bone regeneration) and implant placement is described, using the digitoclastic technique to displace the lingual flap coronally...
April 25, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28443166/correlation-between-topographic-parameters-obtained-by-back-surface-topography-based-on-structured-light-and-radiographic-variables-in-the-assessment-of-back-morphology-in-young-patients-with-idiopathic-scoliosis
#7
Laura Pino-Almero, María Fe Mínguez-Rey, Rosa María Cibrián-Ortiz de Anda, María Rosario Salvador-Palmer, Salvador Sentamans-Segarra
STUDY DESIGN: Optical cross-sectional study. PURPOSE: To study the correlation between asymmetry of the back (measured by means of surface topography) and deformity of the spine (quantified by the Cobb angle). OVERVIEW OF LITERATURE: The Cobb angle is considered the gold standard in diagnosis and follow-up of scoliosis but does not correctly characterize the three-dimensional deformity of scoliosis. Furthermore, the exposure to ionizing radiation may cause harmful effects particularly during the growth stage, including breast cancer and other tumors...
April 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/28443061/a-linear-temporal-increase-in-thrombin-activity-and-loss-of-its-receptor-in-mouse-brain-following-ischemic-stroke
#8
Doron Bushi, Efrat Shavit Stein, Valery Golderman, Ekaterina Feingold, Orna Gera, Joab Chapman, David Tanne
BACKGROUND: Brain thrombin activity is increased following acute ischemic stroke and may play a pathogenic role through the protease-activated receptor 1 (PAR1). In order to better assess these factors, we obtained a novel detailed temporal and spatial profile of thrombin activity in a mouse model of permanent middle cerebral artery occlusion (pMCAo). METHODS: Thrombin activity was measured by fluorescence spectroscopy on coronal slices taken from the ipsilateral and contralateral hemispheres 2, 5, and 24 h following pMCAo (n = 5, 6, 5 mice, respectively)...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28441314/radiologic-parameters-can-affect-the-preoperative-decision-making-of-three-column-spinal-osteotomies-in-the-treatment-of-severe-and-stiff-kyhposcoliosis
#9
Hengwei Fan, Xueshi Li, Zifang Huang, Wenyuan Sui, Jingfan Yang, Yaolong Deng, Chongwen Wang, Chuandong Lang, Junlin Yang
STUDY DESIGN: Retrospective analysis. OBJECTIVE: To evaluate radiologic parameters affect spine surgeon's osteotomy choice on patients with severe and stiff thoracic kyphoscoliosis. SUMMARY OF BACKGROUD DATA: Three-column osteotomies were developed to address severe and stiff kyphoscolisis. Current choice on osteotomies based on the morphology of kyphosis, global balance and locations of the main curvature, however, quantitative basis for decision-making is still lacking...
April 24, 2017: Spine
https://www.readbyqxmd.com/read/28439703/the-impact-of-direct-vertebral-rotation-dvr-on-radiographic-outcome-in-surgical-correction-of-idiopathic-scoliosis
#10
Wiktor Urbanski, Michal J Wolanczyk, Wojciech Jurasz, Miroslaw Kulej, Piotr Morasiewicz, Szymon Lukasz Dragan, Marek Sasiadek, Szymon Feliks Dragan
INTRODUCTION: Recent developments of spinal instruments allow to address nearly all components of idiopathic scoliosis. Direct vertebral rotation (DVR) maneuver was introduced to correct apical axial vertebral rotation. It is however still not well established how efficiently DVR affects results of scoliosis correction. The object of the study was to evaluate en bloc apical vertebral rotation (DVR) and its impact on coronal and sagittal correction of the spine in patients undergoing surgical scoliosis treatment...
April 24, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28439701/the-influence-of-different-sets-of-surgical-instrumentation-in-oxford-uka-on-bearing-size-and-component-position
#11
Tilman Walker, Pascal Heinemann, Thomas Bruckner, Marcus R Streit, Stefan Kinkel, Tobias Gotterbarm
INTRODUCTION: The Oxford unicompartmental knee arthroplasty (OUKA) has been proven to be an effective treatment for anteromedial osteoarthritis of the knee joint. New instrumentation has been introduced to improve the reproducibility of implant positioning and to minimize bone loss during tibial resection (Oxford Microplasty; Zimmer Biomet, Warsaw, Indiana, USA). METHODS: To assess the effect of the new instrumentation, we retrospectively evaluated the postoperative radiographs and surgical records of 300 OUKAs in three consecutive cohorts of patients...
April 24, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28439161/three-dimensional-analysis-of-the-anatomical-characteristics-and-dimensions-of-the-nasopalatine-canal-using-cone-beam-computed-tomography
#12
Nikhil V Jain, Affaf A Gharatkar, Bandish A Parekh, Smita I Musani, Umang Deepak Shah
AIM: Placement of implants in the maxillary anterior region needs to be preceded by careful analysis of the area as in addition to the functional aspect the esthetic outcome is of prime importance. This descriptive study evaluated anatomical characteristics and dimensions of the nasopalatine canal (NC) from coronal, sagittal and axial aspects using cone beam computed tomography (CBCT) giving it a three dimensional analytical approach. Also the dimensions of the corresponding buccal bone plate (BBP) of the alveolar process were evaluated...
June 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28437735/detective-quantum-efficiency-dqe-in-pet-scanners-a-simulation-study
#13
George E Karpetas, Christos M Michail, George P Fountos, Nektarios I Kalyvas, Ioannis G Valais, Ioannis S Kandarakis, George S Panayiotakis
The aim of the present study is to introduce the detective quantum efficiency (DQE) for the image quality assessment of positron emission tomography (PET) scanners. For this purpose, a thin layer chromatography (TLC) plane source was simulated using a previously validated, scanner and source geometry, Monte Carlo (MC) model. The model was developed with the Geant4 application for tomographic emission (GATE) MC package and reconstructed images obtained with the software for tomographic image reconstruction (STIR), with cluster computing...
April 12, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28437356/scoliosis-is-a-risk-factor-for-gastroesophageal-reflux-disease-in-adult-spinal-deformity
#14
Naobumi Hosogane, Kota Watanabe, Mitsuru Yagi, Shinjiro Kaneko, Yoshiaki Toyama, Morio Matsumoto
STUDY DESIGN: A prospective observational study. OBJECTIVE: To evaluate whether scoliosis is a risk factor for gastroesophageal reflux disease (GERD) in elderly patients. SUMMARY OF BACKGROUND DATA: Sagittal spinal deformities are reported to cause GERD, but its association with spinal deformity in the coronal plane is not well studied. METHODS: We examined 190 patients with spinal disorders (mean age 70.6±8.6 y) who underwent standing whole-spine x-rays in the coronal and sagittal planes...
May 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28437351/one-stage-posterior-spinal-osteotomy-in-severe-spinal-deformities-a-total-of-147-cases
#15
Lei Xia, Ning Li, Dan Wang, Ming Liu, Jun-Wei Li, De-Ming Bao, Peng Li
STUDY DESIGN: This is a retrospective study. OBJECTIVES: The treatment of severe spinal deformities is still a difficult surgical challenge. It is generally significant to identify the related complications performed to a consecutive series of patients with severe spinal deformity and managed by 1-stage posterior spinal osteotomy. SUMMARY OF BACKGROUND DATA: We investigated data from 147 consecutive patients (75 males and 72 females) with severe deformity and managed by Smith-Petersen osteotomy, pedicle subtraction osteotomy, or vertebral column resection between years 2006 and 2012 with >2-year follow-up...
May 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28437347/effect-of-coronal-scoliotic-curvature-on-sagittal-spinal-shape-analysis-of-parameters-in-mature-adolescent-scoliosis-patients
#16
Jae-Young Hong, Keon-Woo Kim, Seung-Woo Suh, Si-Young Park, Jae-Hyuk Yang
STUDY DESIGN: A radiographic analysis with scoliosis patients. OBJECTIVES: To analyze correlations between sagittal spinal alignment and coronal scoliotic curvature. SUMMARY OF BACKGROUND DATA: Sagittal spinal alignment and scoliosis may have a significant relationship, and schematic analysis is needed. METHODS: The study group was comprised of 163 patients with adolescent idiopathic scoliosis. Subjects underwent anteroposterior and lateral radiographs of the whole spine including hip joints...
May 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28437333/correction-capability-in-the-3-anatomic-planes-of-different-pedicle-screw-designs-in-scoliosis-instrumentation
#17
Xiaoyu Wang, Carl-Eric Aubin, John Coleman, Jeremy Rawlinson
STUDY DESIGN: Computer simulations to compare the correction capabilities of different pedicle screws in adolescent idiopathic scoliosis (AIS) instrumentations. OBJECTIVE: To compare the correction and resulting bone-screw forces associated with different pedicle screws in scoliosis instrumentations. SUMMARY OF BACKGROUND DATA: Pedicle screw fixation is widely used in surgical instrumentation for spinal deformity treatment. Screw design, correction philosophies, and surgical techniques are constantly evolving to achieve better control of the vertebrae and correction of the spinal deformity...
May 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28437194/comparison-of-three-final-irrigation-activation-techniques-effects-on-canal-cleanness-smear-layer-removal-and-dentinal-tubule-penetration-of-two-root-canal-sealers
#18
Elmas Turkel, Emel Olga Onay, Mete Ungor
OBJECTIVE: The aim of this study was to compare three final irrigation activation techniques with respect to their effects on debridement efficacy, smear layer removal, and dentinal tubule penetration of two different root canal sealers. BACKGROUND DATA: Different applications to improve the delivery of irrigating solutions within the root canal system are currently being investigated, as not all of the mechanisms and effects of these techniques have been clearly identified...
February 22, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28435502/inferior-vena-cava-measurement-with-ultrasound-what-is-the-best-view-and-best-mode
#19
Nathan M Finnerty, Ashish R Panchal, Creagh Boulger, Amar Vira, Jason J Bischof, Christopher Amick, David P Way, David P Bahner
INTRODUCTION: Intravascular volume status is an important clinical consideration in the management of the critically ill. Point-of-care ultrasonography (POCUS) has gained popularity as a non-invasive means of intravascular volume assessment via examination of the inferior vena cava (IVC). However, there are limited data comparing different acquisition techniques for IVC measurement by POCUS. The goal of this evaluation was to determine the reliability of three IVC acquisition techniques for volume assessment: sub-xiphoid transabdominal long axis (LA), transabdominal short axis (SA), and right lateral transabdominal coronal long axis (CLA) (aka "rescue view")...
April 2017: Western Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28434954/coronal-multiplane-reconstructed-ct-image-determining-lateral-vertebral-notch-referred-pedicle-screw-entry-point-in-subaxial-cervical-spine-a-preclinical-study
#20
Chunyang Wu, Zhongren Huang, Zhimin Pan, Jiaquan Luo, Zhiyun Li, Junlong Zhong, Yiwei Chen, Zhimin Han, Kuniyoshi Abumi, Yoon Ha, Kai Cao
OBJECTIVE: Evaluate the feasibility of coronal multiplane reconstruction images (CMRI) of CT scan to determine subaxial cervical pedicle screw (PS) entry point and guide lateral vertebral notch (LVN)-referred technique for subaxial cervical PS insertion. METHODS: Forty cervical CT scans from volunteers were performed. Entry point of PS was determined through quantitating the PS entry point related to LVN on CMRI. Pedicle mediolateral angle (α) and cephalocaudad angle (β) were also measured to guide trajactory of PS insertion...
April 18, 2017: World Neurosurgery
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