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https://www.readbyqxmd.com/read/28532919/image-guided-lateral-mass-osteotomy-for-en-bloc-resection-of-cervical-ewing-s-sarcoma-a-technical-note
#1
Julian Li, Kevin Phan, Tommy Manh Tran, Ralph Mobbs, Ralph Stanford
BACKGROUND: En bloc resection of Ewing's sarcoma according to Enneking's principles is technically challenging in the cervical spine due to the proximity of important neurovascular structures, complex local anatomy and biomechanical instability of radical resection. The rarity of Ewing's sarcoma and variability of presentation justifies ongoing compilation of the surgical nuances and subtleties of en bloc resection in the cervical spine. CASE DESCRIPTION: We present a 34-year-old male with Ewing's sarcoma of the neck who underwent successful en bloc resection using a novel technique of splitting the laminae and osteomising the lateral masses using image guidance...
May 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28530132/development-of-a-high-fidelity-pressurized-porcine-beating-heart-simulator-for-cardiac-surgery-training
#2
Igo B Ribeiro, Janet M C Ngu, Gurinder Gill, Fraser D Rubens
BACKGROUND: Development of a high-fidelity cardiac surgery simulator (CSS) requires integration of a heart model with a mock cardiopulmonary bypass (CPB) circuit that can provide feedback to mimic the pathophysiology of cardiac surgery. However, the cost of commercially available simulators precludes regular use. We describe steps in the construction of a high-fidelity CSS that integrates a pulsatile paracorporeal ventricular-assist device (Pulse-VAD) and a commercially available CPB simulator...
May 1, 2017: Perfusion
https://www.readbyqxmd.com/read/28523935/head-neck-and-neuroanatomy-thieme-atlas-of-anatomy-schuenke-m-schulte-e-schumacher-u-head-neck-and-neuroanatomy-thieme-atlas-of-anatomy-thieme-stuttgart-2016-600-pp-9781626231696-%C3%A2-69-99-pbk
#3
https://www.readbyqxmd.com/read/28521360/exposure-of-the-external-carotid-artery-through-the-posterior-triangle-of-the-neck-a-novel-approach-to-facilitate-bypass-procedures-to-the-posterior-cerebral-circulation
#4
Ali Tayebi Meybodi, Michael T Lawton, Pooneh Mokhtari, Olivia Kola, Ivan H El-Sayed, Arnau Benet
BACKGROUND: The external carotid artery (ECA) is the main high-flow donor for extracranial-intracranial revascularization procedures. However, anatomic restraints limit the availability of ECA in posterior exposures of the craniocervical junction aimed for bypass to distal vertebral artery segments. OBJECTIVE: To examine the feasibility and safety of exposure of the ECA through the posterior triangle of the neck. METHODS: A preliminary feasibility study on the posterior neck exposure of the ECA was performed in 1 cadaveric head (2 sides) followed by a morphometric study on 9 cadaveric heads (18 sides)...
June 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28514499/surface-anatomy-of-major-anatomical-landmarks-of-the-neck-in-an-adult-population-a-ct-evaluation-of-vertebral-level
#5
Masroor Badshah, Roger Soames, Muhammad Ibrahim Marwat, Muhammad Jaffar Khan, Adnan Khan
Introduction To compare the projectional surface anatomy of healthy individuals in an adult population with those with a thyroid mass, using computed tomography (CT). Methods Sixteen slice CT images of 101 individuals were analyzed using a 32-bit Radiant DICOM viewer to establish the relationships among major anatomical landmarks in the neck and their vertebral levels. The structures investigated included: hard palate (HP), hyoid bone (HB) including body and lesser horns, soft palate (SP), thyroid gland (TG) (both superior and inferior poles), thyroid gland anteroposterior (APD) and superoinferior (SID) diameters, thyroid isthmus (TI) superoinferior dimension, epiglottis, vertebral arteries (right and left), and both right and left parotid glands (superior and inferior extents)...
May 17, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28513864/the-influence-of-non-rigid-anatomy-and-patient-positioning-on-endoscopy-ct-image-registration-in-the-head-and-neck
#6
W Scott Ingram, Jinzhong Yang, Richard Wendt, Beth M Beadle, Arvind Rao, Xin A Wang, Laurence E Court
PURPOSE: To assess the influence of non-rigid anatomy and differences in patient positioning between CT acquisition and endoscopic examination on endoscopy-CT image registration in the head and neck. METHODS: Radiotherapy planning CTs and 31-35 daily treatment-room CTs were acquired for nineteen patients. Diagnostic CTs were acquired for thirteen of the patients. The surfaces of the airways were segmented on all scans and triangular meshes were created to render virtual endoscopic images with a calibrated pinhole model of an endoscope...
May 17, 2017: Medical Physics
https://www.readbyqxmd.com/read/28512547/vascular-labeling-of-the-head-and-neck-vessels-technique-advantages-and-limitations
#7
Alba Gálvez, José-Leonardo Caraballo, María-Cristina Manzanares-Céspedes, Iván Valdivia-Gandur, Rui Figueiredo, Eduard Valmaseda-Castellón
BACKGROUND: Vascular staining techniques have been used to describe the vascular structures of several anatomic areas. However, few reports have described this procedure in the head and neck region. This paper describes a head and neck vascular labeling procedure, and describes some of the technical complications that may occur. MATERIAL AND METHODS: Fifteen specimen cadaver heads were prepared. After drying the vascular system, the internal carotid arteries were ligated and a solution with latex and a gelling agent was injected into the internal carotid arteries and external jugular veins...
May 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28506780/a-novel-approach-for-regional-anaesthesia-of-the-auricular-region-in-horses-an-anatomic-and-imaging-study
#8
Ilaria Cerasoli, Pieter Cornillie, Frank Gasthuys, Ingrid Gielen, Stijn Schauvliege
OBJECTIVE: To investigate the anatomy of the ear innervation in horses and develop a new approach for the block of the internal and external pinna and acoustic meatus. STUDY DESIGN: Prospective, descriptive, cadaveric study. ANIMALS: A total of 25 heads and necks from horse cadavers. METHODS: Phase I: anatomical dissection and dye deposition on 19 heads. With the head positioned in lateral recumbency, 10 mL methylene blue (1:1 sterile water) for the internal auricular and 2 mL for the great auricular nerve block were injected in 21 ears (seven left, 10 right and two bilaterally)...
January 11, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28486843/emergent-endovascular-repair-of-challenging-aortocaval-fistula-with-hostile-anatomy
#9
Yuewei Wang, Wenjuan Yu, Yongxin Li, Haofu Wang
Aortocaval fistula (ACF) is a rare complication. Endovascular repair is an option for this fatal condition. However, endoleak and persistent fistula may occur and lead to technical failure. We performed endovascular repair for 3 cases of challenging ACF with hostile anatomy. Patient 1 was an 80-year-old man who complained of abdominal distension and lower limb edema for 15 days. He had renal and cardiac dysfunction. Computed tomography angiography (CTA) showed an ACF and extreme tortuosity of right iliac artery...
January 1, 2017: Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28480090/atypical-pharyngeal-pouch-arising-bilaterally-between-the-hyoid-bone-and-thyroid-cartilage
#10
Lawrence J Oh, Lyndon Chan, David Veivers
Introduction. Pharyngoesophageal diverticuli are a common cause of dysphagia; they are associated with various morbidities and a decreased quality of life. There are several different types of the diverticuli, and they are divided based on the anatomical location of origin relative to the cricopharyngeal muscle; these include Zenker's, Killian-Jamieson's, and Laimer's diverticula. The authors present a unique case of pharyngoesophageal diverticulum that has not been previously described. Case Presentation. A 65-year-old male presented with a 12-month history of dysphagia and odynophagia for solids...
2017: Case Reports in Otolaryngology
https://www.readbyqxmd.com/read/28479470/third-vs-second-generation-stent-graft-for-endovascular-aneurysm-repair-a-device-specific-analysis
#11
Marco Bergonti, Giovanni Teruzzi, Giulia Santagostino, Luca Grancini, Cristina Ferrari, Daniela Trabattoni, Alessandro Lualdi, Antonio Bartorelli
PURPOSE: to analyze outcomes of Endovascular Aneurysm Repair (EVAR) in patients treated with Excluder endograft (W.L. Gore and Associate, Flagstaff, AZ), comparing 2(nd) generation featuring SIM-PULL delivery system (ExSP), and 3(rd) generation, featuring C3 (ExC3), concerning intra-procedural data and long-term outcomes. METHODS: In our single-center, comparative study, we retrospectively analyzed all patients undergoing elective EVAR with Excluder from May 2008 to December 2015...
May 4, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28477340/a-neural-network-approach-for-fast-automated-quantification-of-dir-performance
#12
John Neylon, Yugang Min, Daniel A Low, Anand Santhanam
PURPOSE: A critical step in adaptive radiotherapy (ART) workflow is deformably registering the simulation CT with the daily or weekly volumetric imaging. Quantifying the deformable image registration accuracy under these circumstances is a complex task due to the lack of known ground-truth landmark correspondences between the source data and target data. Generating landmarks manually (using experts) is time-consuming, and limited by image quality and observer variability. While image similarity metrics (ISM) may be used as an alternative approach to quantify the registration error, there is a need to characterize the ISM values by developing a non-linear cost function and translate them to physical distance measures in order to enable fast, quantitative comparison of registration performance...
May 5, 2017: Medical Physics
https://www.readbyqxmd.com/read/28477180/value-of-flat-detector-computed-tomography-angiography-with-intravenous-contrast-media-injection-in-the-evaluation-and-treatment-of-acutely-ruptured-aneurysms-of-the-acoma-complex-a%C3%A2-single-center-experience-in-15%C3%A2-cases
#13
Julie Rösch, Stefan Lang, Philipp Gölitz, Bernd Kallmünzer, Karl Rössler, Arnd Doerfler, Tobias Struffert
OBJECTIVE: To illustrate the added value of flat-detector computed tomography angiography with intravenous contrast media injection (intravenous FDCTA) in the evaluation of complex A1/A2/AcomA aneurysms. PATIENTS AND METHODS: We retrospectively reviewed 15 patients with ruptured aneurysms. In each patient, an intravenous FDCTA was performed and its diagnostic value investigated. RESULTS: In all patients, FDCTA contributed relevant additional information concerning the anatomy of the A1/A2/AcomA complex and the relationship of the aneurysm neck to these vascular structures, which could not be gained by 2D- and 3D-DSA, and changed the management in 33% of the patients (5 out of 15)...
May 5, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28460647/-cannot-ventilate-cannot-intubate-situation-after-penetration-of-the-tongue-root-through-to-the-epipharynx-by-a-surfboard-a-case-report
#14
Yuko Ono, Miha Kunii, Tomohiro Miura, Kazuaki Shinohara
BACKGROUND: Surfing is an increasingly popular activity and surfing-related injuries have increased accordingly. However, to the best of our knowledge, there are no reports of penetrating upper airway injuries in surfers. We present a "cannot ventilate, cannot intubate" situation following penetrating neck injury by a surfboard fin. CASE PRESENTATION: A previously healthy 29-year-old Japanese man was swept off his board by a large wave and his left mandible, tongue root, and right epipharynx were penetrated by the surfboard fin...
May 1, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28456587/proton-therapy-for-head-and-neck-cancer-expanding-the-therapeutic-window
#15
REVIEW
Jonathan E Leeman, Paul B Romesser, Ying Zhou, Sean McBride, Nadeem Riaz, Eric Sherman, Marc A Cohen, Oren Cahlon, Nancy Lee
Use of proton beam therapy has expanded, with the number of proton centres rapidly increasing not only in the USA but also worldwide. The physical characteristics of the proton beam offer important advantages versus widely used photon techniques in terms of radiation precision. In head and neck cancer in particular, proton beam therapy is uniquely suited for the complex anatomy of tumours and sensitive surrounding organs. De-intensification and personalisation of treatment to limit toxicity are of renewed importance in the context of human papilloma virus-associated disease, in which young patients will be cured but bear the consequences of adverse effects for decades...
April 26, 2017: Lancet Oncology
https://www.readbyqxmd.com/read/28452166/dorsal-scapular-artery-as-a-recipient-vessel-in-the-vessel-depleted-neck-during-free-tissue-transfer-in-head-and-neck-reconstruction
#16
Andrew J Rosko, Jesse T Ryan, Eric J Wizauer, Mohannad Ibrahim, Ashok Srinivasan, Chaz L Stucken, Matthew E Spector
BACKGROUND: The vessel-depleted neck poses a unique challenge to the microvascular surgeon. Using 3D modeling and cadaveric dissection, we describe the approach and advantages of a known but less frequently used recipient vessel, the dorsal scapular artery, during free tissue transfer. METHODS: Three patients with vessel-depleted necks required reconstruction with free tissue transfer. The dorsal scapular artery was used as a recipient vessel. Three-dimensional anatomic models were created and cadaveric dissections were performed to characterize the anatomy...
April 28, 2017: Head & Neck
https://www.readbyqxmd.com/read/28451716/-interventional-radiology-in-the-head-and-neck-region
#17
C Mayer, E Hattingen, H Schild, F Bootz, A Schröck
In interventional neuroradiology, endovascular embolization represents an important and helpful tool in the treatment of multiple head and neck diseases. These interventional procedures may be performed with curative intent, to reduce the surgical risk within a multimodal treatment concept, or to improve or at least maintain a good quality of life within a palliative therapy concept. In addition to a good understanding of disease pathology, knowledge of vascular anatomy, including collateral vessels and dangerous extracranial-intracranial anastomoses, is essential for successful treatment, as is implementation of an established technique using appropriate material...
April 27, 2017: HNO
https://www.readbyqxmd.com/read/28451487/epidemiology-and-outcomes-of-vertebral-artery-injury-in-16%C3%A2-582-cervical-spine-surgery-patients-an-aospine-north-america-multicenter-study
#18
Wellington K Hsu, Abhishek Kannan, Harry T Mai, Michael G Fehlings, Zachary A Smith, Vincent C Traynelis, Ziya L Gokaslan, Alan S Hilibrand, Ahmad Nassr, Paul M Arnold, Thomas E Mroz, Mohamad Bydon, Eric M Massicotte, Wilson Z Ray, Michael P Steinmetz, Gabriel A Smith, Jonathan Pace, Mark Corriveau, Sungho Lee, Robert E Isaacs, Jeffrey C Wang, Elizabeth L Lord, Zorica Buser, K Daniel Riew
STUDY DESIGN: A multicenter retrospective case series was compiled involving 21 medical institutions. Inclusion criteria included patients who underwent cervical spine surgery between 2005 and 2011 and who sustained a vertebral artery injury (VAI). OBJECTIVE: To report the frequency, risk factors, outcomes, and management goals of VAI in patients who have undergone cervical spine surgery. METHODS: Patients were evaluated on the basis of condition-specific functional status using the Neck Disability Index (NDI), modified Japanese Orthopaedic Association (mJOA) score, the Nurick scale, and the 36-Item Short-Form Health Survey (SF-36)...
April 2017: Global Spine Journal
https://www.readbyqxmd.com/read/28447959/using-measurable-dosimetric-quantities-to-characterize-the-inter-structural-tradeoff-in-inverse-planning
#19
Hongcheng Liu, Peng Dong, Lei Xing
Traditional inverse planning relies on the use of weighting factors to balance the conflicting requirements of different structures. The manual trial-and-error determination of the weighting factors has long been recognized as a time-consuming part of treatment planning. The purpose of this work is to develop an inverse planning framework that parameterizes the dosimetric tradeoff among the structures with physically meaningful quantities to simplify the search for clinically sensible plans. In this formalism, instead of using the weighting factors, permissible variation range of the prescription dose or dose volume histogram (DVH) of the involved structures are used to characterize the "importance" of the structures...
April 27, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28446075/comparison-of-bronchoscopy-guided-and-real-time-ultrasound-guided-percutaneous-dilatational-tracheostomy-safety-complications-and-effectiveness-in-critically-ill-patients
#20
Aykut Sarıtaş, Muhammed M Kurnaz
OBJECTIVE: To compare the efficacy, safety, and incidence of complications between fiber-optic bronchoscopy-guided percutaneous dilatational tracheostomy (FOB-PDT) and ultrasound-guided percutaneous dilatational tracheostomy (US-PDT) and to determine whether US-PDT is a viable alternative to FOB-PDT. METHODS: This randomized prospective study was carried out in 80 patients who were randomly divided into US-PDT and FOB-PDT groups. Demographic data and Acute Physiology and Chronic Health Evaluation II (APACHE II), procedure duration, hemorrhage status, complications, procedure difficulty, displacement of entry location after US, and hemodynamic data were evaluated in both groups...
January 1, 2017: Journal of Intensive Care Medicine
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