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https://www.readbyqxmd.com/read/27922969/orbital-morphometry-a-computed-tomography-analysis
#1
Jaswinder Singh, Roselinda Ab Rahman, Zainul Ahmad Rajion, Johari Abdullah, Irfan Mohamad
INTRODUCTION: The human orbit is a complex anatomic region, which plays predominant role in the evaluation of craniofacial complex. A thorough understanding of the relationship of the distance from orbital rim to the important vital structures of the orbital apex is required for the surgeon to perform safe and effective surgery. OBJECTIVES: To evaluate and compare the depth and distances from various points of the orbital rim to the fissures and foramina of the orbital apex between genders in the local population...
December 5, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27922961/costochondral-graft-in-young-children-with-hemifacial-microsomia
#2
Bin-Zhang Wu, Lian Ma, Yang Li, Shuo Chen, Biao Yi
Patients with severely hypoplastic mandibles usually require condylar reconstruction. This study aimed to describe costochondral graft (CCG) for condylar reconstruction and report subsequent outcomes of these grafts in young children with Pruzansky/Kaban type IIB and type III mandibular hypoplasia. This study included 4 young children with type IIB and type III hemifacial microsomia treated with CCG to reconstruct the condyle at the Department of Oral and Maxillofacial Surgery in our hospital from March 2008 to March 2014...
December 5, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27922956/the-complicated-facial-war-injury-pitfalls-and-mismanagement
#3
Ghassan S Abu-Sittah, Joe Baroud, Christopher Hakim, Cynthia Wakil
OBJECTIVE: The aim of this paper is to share the authors' experience in the management of complicated facial war injuries using free tissue transfer. A discussion on the most commonly encountered pitfalls in management during the acute and complicated settings is presented in an effort to raise insight on facial war wound complications. METHODOLOGY: Two patients of complicated facial war injuries are presented to exemplify the pitfalls in acute and chronic management of the mandibular region in the first patient and the orbito-maxillary region in the second...
December 5, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27922539/effect-of-tomographic-operator-inaccuracies-and-respiratory-motion-on-pet-ct-lung-nodule-images-smearing
#4
Joël Daouk, Pascal Bailly, Roger Bouzerar, Marc-Étienne Meyer
BACKGROUND: In thoracic PET/computed tomography (CT) imaging, uptake foci usually appear smeared because of postreconstruction smoothing and respiratory motion. OBJECTIVE: The aim of the present study was to assess the respective contributions of the reconstruction process and respiratory motion on PET/CT images. MATERIALS AND METHODS: Thirty-one pulmonary lesions were studied. Free-breathing PET/CT acquisitions were followed by a 10-min respiratory-gated PET/CT acquisition...
December 2, 2016: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/27921073/evaluation-of-lesion-detectability-in-positron-emission-tomography-when-using-a-convergent-penalized-likelihood-image-reconstruction-method
#5
Kristen A Wangerin, Sangtae Ahn, Scott Wollenweber, Steven G Ross, Paul E Kinahan, Ravindra M Manjeshwar
We have previously developed a convergent penalized likelihood (PL) image reconstruction algorithm using the relative difference prior (RDP) and showed that it achieves more accurate lesion quantitation compared to ordered subsets expectation maximization (OSEM). We evaluated the detectability of low-contrast liver and lung lesions using the PL-RDP algorithm compared to OSEM. We performed a two-alternative forced choice study using a channelized Hotelling observer model that was previously validated against human observers...
January 2017: Journal of Medical Imaging
https://www.readbyqxmd.com/read/27920698/a-case-of-en-bloc-excision-of-a-chest-wall-leiomyosarcoma-and-closure-of-the-defect-with-non-cross-linked-collagen-matrix-egis-%C3%A2
#6
Marco Rastrelli, Saveria Tropea, Romina Spina, Alessandra Costa, Roberto Stramare, Simone Mocellin, Maria Giuseppina Bonavina, Carlo Riccardo Rossi
Sarcomas arising from the chest wall account for less than 20% of all soft tissue sarcomas, and at this site, primitive tumors are the most frequent to occur. Leiomyosarcoma is a malignant smooth muscle tumor and the best outcomes are achieved with wide surgical excision. Although advancements have been made in treatment protocols, leiomyosarcoma remains one of the more difficult soft tissue sarcoma to treat. Currently, general local control is obtained with surgical treatment with wide negative margins. We describe the case of a 50-year-old man who underwent a chest wall resection involving a wide portion of the pectoralis major and minor muscle, the serratus and part of the second, third and fourth ribs of the left side...
September 2016: Case Reports in Oncology
https://www.readbyqxmd.com/read/27920295/a-novel-transcriptional-regulator-related-to-thiamine-phosphate-synthase-controls-thiamine-metabolism-genes-in-archaea
#7
Dmitry A Rodionov, Semen A Leyn, Xiaoqing Li, Irina A Rodionova
: Thiamine (vitamin B1) is a precursor of thiamine pyrophosphate (TPP), an essential coenzyme in the central metabolism of all living organisms. Bacterial thiamin biosynthesis and salvage genes are controlled at the RNA level by TPP-responsive riboswitches. In Archaea, TPP riboswitches are restricted to the Thermoplasmatales order. Mechanisms of transcriptional control of thiamine genes in other archaeal lineages remain unknown. Using the comparative genomics approach, we identified a novel family of transcriptional regulators (named ThiR) controlling thiamine biosynthesis and transport genes in diverse lineages from the Crenarchaeota phylum, as well as in the Halobacteria and Thermococci classes of the Euryarchaeota ThiR regulators are composed of an N-terminal DNA-binding domain and a C-terminal ligand-binding domain that is similar to the archaeal thiamin phosphate synthase ThiN...
December 5, 2016: Journal of Bacteriology
https://www.readbyqxmd.com/read/27920231/bayesian-morphological-clock-methods-resurrect-placoderm-monophyly-and-reveal-rapid-early-evolution-in-jawed-vertebrates
#8
Benedict King, Tuo Qiao, Michael S Y Lee, Min Zhu, John A Long
The phylogeny of early gnathostomes provides an important framework for understanding one of the most significant evolutionary events, the origin and diversification of jawed vertebrates. A series of recent cladistic analyses have suggested that the placoderms, an extinct group of armoured fish, form a paraphyletic group basal to all other jawed vertebrates. We revised and expanded this morphological data set, most notably by sampling autapomorphies in a similar way to parsimony-informative traits, thus ensuring this data (unlike most existing morphological data sets) satisfied an important assumption of Bayesian tip-dated morphological clock approaches...
December 5, 2016: Systematic Biology
https://www.readbyqxmd.com/read/27919847/using-on-site-liver-3-d-reconstruction-and-volumetric-calculations-in-split-liver-transplantation
#9
Trevor W Reichman, Brittany Fiorello, Ian Carmody, Humberto Bohorquez, Ari Cohen, John Seal, David Bruce, George E Loss
BACKGROUND: Split liver transplantation increases the number of grafts available for transplantation. Pre-recovery assessment of liver graft volume is essential for selecting suitable recipients. The purpose of this study was to determine the ability and feasibility of constructing a 3-D model to aid in surgical planning and to predict graft weight prior to an in situ division of the donor liver. METHODS: Over 11 months, 3-D volumetric reconstruction of 4 deceased donors was performed using Pathfinder Scout© liver volumetric software...
December 2016: Hepatobiliary & Pancreatic Diseases International: HBPD INT
https://www.readbyqxmd.com/read/27919705/the-complete-mitochondrial-genome-of-thitarodes-sejilaensis-lepidoptera-hepialidae-a-host-insect-of-ophiocordyceps-sinensis-and-its-implication-in-taxonomic-revision-of-hepialusadopted-in-china
#10
Zhiwen Zou, Qiang Min, Shiyu Cheng, Tianrong Xin, Bin Xia
The mitochondrial genome is widely used for phylogenetic analyses and evolutionary biology. The complete mitochondrial genome of Thitarodes sejilaensis (Lepidoptera: Hepialidae) was sequenced and analyzed in this study. This mitogenome is a typical circular molecule of 15,290bp, with the gene content, orientation and order identical to other insects in the family Hepialidae. The genome nucleotide composition is heavily biased towards As and Ts, accounting for 80.87% of total nucleotide content. The major strand shows a positive AT-skew and negative GC-skew...
December 2, 2016: Gene
https://www.readbyqxmd.com/read/27919616/supermicrosurgery-assisted-venous-supercharging-of-a-reverse-flow-angular-artery-perforator-flap-for-nasal-reconstruction
#11
R Vijayan, F Al-Aswad, R Y Kannan
The centre ground in the world of flaps have over time, gradually shifted from tubed pedicled, random-pattern, axial-pattern, pedicled, free and currently, to free-styled flaps. These concepts are broadly based on the angiosome-perforasome concept. In this case report, we illustrate how the concept of venosome capture can be transposed onto reverse-flow flaps with the aid of venous supercharging. Moreover, if this is seen from the free-styled flap perspective, it requires supermicrosurgical expertise. This case report hence, serves as a fusion of all the above concepts...
November 24, 2016: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/27919596/chimeric-anterolateral-thigh-free-flap-for-reconstruction-of-complex-cranio-orbito-facial-defects-after-skull-base-cancers-resection
#12
Mario Cherubino, Mario Turri-Zanoni, Paolo Battaglia, Marco Giudice, Igor Pellegatta, Federico Tamborini, Francesca Maggiulli, Luca Guzzetti, Danilo Di Giovanna, Maurizio Bignami, Carolina Calati, Paolo Castelnuovo, Luigi Valdatta
Complex cranio-orbito-facial defects after skull base cancers resection entail a functional and esthetic reconstruction. The introduction of endoscopic assisted techniques for excision surgery with the advances in reconstructive surgery and anesthesiology allowed to improve the management of such critical patients. We report a series of chimeric anterolateral thigh (ALT) flaps used to reconstruct complex cranio-orbital-facial defects after skull base surgery. A retrospective review of patients that underwent cranio-orbito-facial reconstruction using a chimeric ALT flap from March 2013 to October 2015 at a single tertiary care referral Institute was performed...
November 2, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/27919113/analysis-of-flap-weight-and-postoperative-complications-based-on-flap-weight-in-patients-undergoing-microsurgical-breast-reconstruction
#13
Gretl Lam, Katie E Weichman, Patrick L Reavey, Stelios C Wilson, Jamie P Levine, Pierre B Saadeh, Robert J Allen, Mihye Choi, Nolan S Karp, Vishal D Thanik
Background Higher body mass index (BMI) has been shown to increase postoperative complications in autologous breast reconstruction. However, the correlation with flap weight is unknown. Here, we explore the relationship of flap weights and complication rates in patients undergoing microvascular breast reconstruction. Methods Retrospective chart review identified all patients undergoing microvascular breast reconstruction with abdominally based flaps at a single institution between November 2007 and April 2013...
December 5, 2016: Journal of Reconstructive Microsurgery
https://www.readbyqxmd.com/read/27918738/venous-thromboembolism-after-oral-and-maxillofacial-oncologic-surgery-report-and-analysis-of-14-cases-in-chinese-population
#14
Y Wang, J Liu, X Yin, J Hu, E Kalfarentzos, C Zhang, L Xu
BACKGROUND: Venous thromboembolism (VTE) including deep vein thrombosis (DVT) and pulmonary embolism (PE) is a leading cause of death in cancer patients. The aim of this study was to explore the potential risk factor of VTE in oral and maxillofacial oncological surgery. MATERIAL AND METHODS: The data of patients who received operation in our institution were gathered in this retrospective study. A diagnosis of VTE was screened and confirmed by computer tomography angiography (CTA) of pulmonary artery or ultrasonography examination of lower extremity...
December 6, 2016: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/27917790/retrospective-air-bone-gap-evaluation-of-patients-with-tympanic-membrane-central-perforation
#15
Levent Küçükkavruk, Esra Temügan, Mesut Kaya, Selim Unsal, Nebi Mustafa Gumus, Mustafa Yüksel, Mehmet Gündüz
PURPOSE: The purpose of this study was to evaluate hearing recovery and air-bone gap (ABG) before and after tympanoplasty surgery in patients with tympanic membrane central perforation. METHODS: Histories and audiological assessments of 160 cases (total of 26 ears from 22 patients; 11 men and 11 women) from patients who had undergone tympanoplasty surgery and hearing reconstruction due to tympanic membrane central perforation were evaluated. Pre-postoperative audiograms and the pure tone, air-bone hearing thresholds and ABG gains were evaluated...
December 1, 2016: Clinical and Investigative Medicine. Médecine Clinique et Experimentale
https://www.readbyqxmd.com/read/27917767/prevalence-and-correlates-of-violence-among-south-african-high-school-learners-in-umgungundlovu-district-municipality-kwazulu-natal-south-africa
#16
N Khuzwayo, M Taylor, C Connolly
BACKGROUND: Young people grow up in homes and communities where many are exposed daily to crime and antisocial behaviours. OBJECTIVE: To investigate the prevalence of violence and the demographic factors associated with such violence among South African (SA)high school learners in the uMgungundlovu District, KwaZulu-Natal, SA. METHODS: In a cross-sectional study, we used stratified random sampling to select 16 schools in uMgungundlovu District...
December 1, 2016: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
https://www.readbyqxmd.com/read/27917527/simultaneous-orthogonal-plane-imaging
#17
Nikolai J Mickevicius, Eric S Paulson
PURPOSE: Intrafraction motion can result in a smearing of planned external beam radiation therapy dose distributions, resulting in an uncertainty in dose actually deposited in tissue. The purpose of this paper is to present a pulse sequence that is capable of imaging a moving target at a high frame rate in two orthogonal planes simultaneously for MR-guided radiotherapy. THEORY: By balancing the zero gradient moment on all axes, slices in two orthogonal planes may be spatially encoded simultaneously...
December 4, 2016: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/27916868/characterization-and-schwann-cell-seeding-of-up-to-15-0-cm-long-spider-silk-nerve-conduits-for-reconstruction-of-peripheral-nerve-defects
#18
Tim Kornfeld, Peter M Vogt, Vesna Bucan, Claas-Tido Peck, Kerstin Reimers, Christine Radtke
Nerve reconstruction of extended nerve defect injuries still remains challenging with respect to therapeutic options. The gold standard in nerve surgery is the autologous nerve graft. Due to the limitation of adequate donor nerves, surgical alternatives are needed. Nerve grafts made out of either natural or artificial materials represent this alternative. Several biomaterials are being explored and preclinical and clinical applications are ongoing. Unfortunately, nerve conduits with successful enhancement of axonal regeneration for nerve defects measuring over 4...
November 30, 2016: Journal of Functional Biomaterials
https://www.readbyqxmd.com/read/27916576/extensor-reconstruction-of-the-knee-using-the-fibular-transposition-technique-after-proximal-tibial-resection
#19
Hiroyuki Kawashima, Akira Ogose, Tetsuo Hotta, Takashi Ariizumi, Tetsuro Yamagishi, Naoto Endo
BACKGROUND: Reconstruction of the extensor mechanism after resection of the proximal tibia is challenging, and several surgical procedures are available. The purpose of this study was to determine the outcome of the fibular transposition technique for reconstruction of the extensor mechanism of the knee after proximal tibial resection. METHODS: We retrospectively reviewed five consecutive patients who underwent resection of the proximal tibia with prosthetic reconstruction and reconstruction of the extensor using fibular transposition between 1997 and 2011...
December 1, 2016: Knee
https://www.readbyqxmd.com/read/27915458/acl-deficiency-and-varus-osteoarthritis-high-tibial-osteotomy-alone-or-combined-with-acl-reconstruction
#20
Julian Mehl, Jochen Paul, Matthias J Feucht, Gerrit Bode, Andreas B Imhoff, Norbert P Südkamp, Stefan Hinterwimmer
INTRODUCTION: This study investigates the mid- to long-term clinical and radiological outcome in patients with symptomatic varus osteoarthritis (OA) and deficiency of the anterior cruciate ligament (ACL) and analyzes whether there are differences between isolated high tibial osteotomy (HTO) or combined single-stage HTO and ACL reconstruction (ACLR). METHODS: 26 patients who underwent HTO alone (group 1) and 26 patients who underwent single-stage HTO and ACLR (group 2) because of varus OA and ACL deficiency were examined at a mean of 5...
December 3, 2016: Archives of Orthopaedic and Trauma Surgery
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