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Electromagnetic navigator

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https://www.readbyqxmd.com/read/27932861/interactive-navigation-guided-ophthalmic-plastic-surgery-assessment-of-optical-versus-electromagnetic-modes-and-role-of-dynamic-reference-frame-location-using-navigation-enabled-human-skulls
#1
Mohammad Javed Ali, Milind N Naik, Chetan Mallikarjuniah Girish, Mohammad Hasnat Ali, Swathi Kaliki, Tarjani Vivek Dave, Gautam Dendukuri
AIM: The aim of this study was to assess the anatomical accuracy of navigation technology in localizing defined anatomic landmarks within the orbit with respect to type of technology (optical versus electromagnetic systems) and position of the dynamic reference marker on the skull (vertex, temporal, parietal, and mastoid) using in vitro navigation-enabled human skulls. The role of this model as a possible learning tool for anatomicoradiological correlations was also assessed. METHODS: Computed tomography (CT) scans were performed on three cadaveric human skulls using the standard image-guidance acquisition protocols...
2016: Clinical Ophthalmology
https://www.readbyqxmd.com/read/27925781/same-day-computed-tomographic-chest-imaging-for-pulmonary-nodule-targeting-with-electromagnetic-navigation-bronchoscopy-may-decrease-unnecessary-procedures
#2
Roy W Semaan, Hans J Lee, David Feller-Kopman, Andrew D Lerner, Christopher M Mallow, Jeffrey Thiboutot, Sixto A Arias, Lonny B Yarmus
RATIONALE: Bronchoscopy is commonly used for the diagnosis of suspicious pulmonary nodules discovered on computed tomographic (CT) imaging of the chest. Procedural CT imaging for bronchoscopy planning is often completed weeks to months before the date of a scheduled bronchoscopy, which may not allow discovery of a decrease in nodule size or resolution before the bronchoscopic procedure. OBJECTIVES: To determine whether same-day CT imaging of the chest discovers partial or total resolution of some lung nodules and thereby reduces unnecessary bronchoscopic procedures...
December 2016: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/27920491/interactive-navigation-guided-ophthalmic-plastic-surgery-navigation-enabling-of-telescopes-and-their-use-in-endoscopic-lacrimal-surgeries
#3
Mohammad Javed Ali, Swati Singh, Milind N Naik, Swathi Kaliki, Tarjani Vivek Dave
PURPOSE: The aims of this study were to report the preliminary experience of using telescopes, which were enabled for navigation guidance, and their utility in complex endoscopic lacrimal surgeries. METHODS: Navigation enabling of the telescope was achieved by using the AxiEM™ malleable neuronavigation shunt stylet. Image-guided dacryolocalization was performed in five patients using the intraoperative image-guided StealthStation™ system in the electromagnetic mode...
2016: Clinical Ophthalmology
https://www.readbyqxmd.com/read/27910956/spin-crossover-materials-towards-microwave-radiation-switches
#4
Olesia I Kucheriv, Viktor V Oliynyk, Volodymyr V Zagorodnii, Vilen L Launets, Il'ya A Gural'skiy
Microwave electromagnetic radiation that ranges from one meter to one millimetre wavelengths is finding numerous applications for wireless communication, navigation and detection, which makes materials able to tune microwave radiation getting widespread interest. Here we offer a new way to tune GHz frequency radiation by using spin-crossover complexes that are known to change their various physical properties under the influence of diverse external stimuli. As a result of electronic re-configuration process, microwave absorption properties differ for high spin and low spin forms of the complex...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27908166/improved-targeting-accuracy-of-lung-tumor-biopsies-with-scanning-beam-digital-x-ray-tomosynthesis-image-guidance
#5
Geoff Nelson, Meng Wu, Cameron Hinkel, Ganesh Krishna, Tobias Funk, Jarrett Rosenberg, Rebecca Fahrig
PURPOSE: Electromagnetic navigation bronchoscopy (ENB) provides improved targeting accuracy during transbronchial biopsies of suspicious nodules. The greatest weakness of ENB-based guidance is the registration divergence that exists between the planning CT, acquired days or weeks before the intervention, and the patient on the table on the day of the intervention. Augmenting ENB guidance with real-time tomosynthesis imaging during the intervention could mitigate the divergence and further improve the yield of ENB-guided transbronchial biopsies...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27844131/-mri-trus-fusion-guided-prostate-biopsy-value-in-the-context-of-focal-therapy
#6
T Franz, J von Hardenberg, A Blana, H Cash, D Baumunk, G Salomon, B Hadaschik, T Henkel, J Herrmann, F Kahmann, K-U Köhrmann, J Köllermann, S Kruck, U-B Liehr, S Machtens, I Peters, J P Radtke, A Roosen, H-P Schlemmer, L Sentker, J J Wendler, U Witzsch, J-U Stolzenburg, M Schostak, R Ganzer
BACKGROUND: Several systems for MRI/TRUS fusion-guided biopsy of the prostate are commercially available. Many studies have shown superiority of fusion systems for tumor detection and diagnostic quality compared to random biopsy. The benefit of fusion systems in focal therapy of prostate cancer (PC) is less clear. OBJECTIVES: Critical considerations of fusion systems for planning and monitoring of focal therapy of PC were investigated. MATERIALS AND METHODS: A systematic literature review of available fusion systems for the period 2013-5/2016 was performed...
November 14, 2016: Der Urologe. Ausg. A
https://www.readbyqxmd.com/read/27706039/a-missile-borne-angular-velocity-sensor-based-on-triaxial-electromagnetic-induction-coils
#7
Jian Li, Dan Wu, Yan Han
Aiming to solve the problem of the limited measuring range for angular motion parameters of high-speed rotating projectiles in the field of guidance and control, a self-adaptive measurement method for angular motion parameters based on the electromagnetic induction principle is proposed. First, a framework with type bent "I-shape" is used to design triaxial coils in a mutually orthogonal way. Under the condition of high rotational speed of a projectile, the induction signal of the projectile moving across a geomagnetic field is acquired by using coils...
September 30, 2016: Sensors
https://www.readbyqxmd.com/read/27686414/feasibility-of-electromagnetically-guided-transjugular-intrahepatic-portosystemic-shunt-procedure
#8
Peter Isfort, Tobias Penzkofer, Christoph Wilkmann, Hong-Sik Na, Christian Kotzlowski, Nobutake Ito, Joachim Georg Pfeffer, Stefan Bisplinghoff, Sabine Osterhues, Andreas Besting, Jorge Gooding, Thomas Schmitz-Rode, Christiane Kuhl, Andreas Horst Mahnken, Philipp Bruners
OBJECTIVES: To develop an electromagnetic navigation technology for transjugular intrahepatic portosystemic shunt (TIPS) creation and translate it from phantom to an in-vivo large animal setting. MATERIAL AND METHODS: A custom-designed device for TIPS creation consisting of a stylet within a 5 French catheter as well as a software prototype were developed that allow real-time tip tracking of both stylet and catheter using an electromagnetic tracking system. Feasibility of navigated TIPSS creation was tested in a phantom by two interventional radiologists (A/B) followed by in-vivo testing evaluation in eight domestic pigs...
August 9, 2016: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/27651937/recent-clinical-innovations-in-thoracic-surgery-in-hong-kong
#9
REVIEW
Ze-Rui Zhao, Zheng Li, Dong-Rong Situ, Calvin S H Ng
The concept of personalized medicine, which aims to provide patients with targeted therapies while greatly reducing surgical trauma, is gaining popularity among Asian clinicians. Single port video-assisted thoracic surgery (VATS) has rapidly gained popularity in Hong Kong for major lung resections, despite bringing new challenges such as interference between surgical instruments and insertion of the optical source through a single incision. Novel types of endocutters and thoracoscopes can help reduce the difficulties commonly encountered during single-port VATS...
August 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/27623421/diagnostic-yield-of-electromagnetic-navigation-bronchoscopy-using-a-curved-tip-catheter-to-aid-in-the-diagnosis-of-pulmonary-lesions
#10
Sumit Mukherjee, Michael Chacey
BACKGROUND: Electromagnetic navigation bronchoscopy (ENB) may aid in the diagnosis of solitary pulmonary lesions with a lower complication rate than conventional diagnostic modalities. A curved-tip catheter is now available for use with ENB; however, the diagnostic yield of this device has not been previously reported. MATERIALS AND METHODS: A single-center, single-operator retrospective chart review was performed on patients who underwent ENB for the diagnosis of pulmonary lesions...
September 10, 2016: Journal of Bronchology & Interventional Pulmonology
https://www.readbyqxmd.com/read/27606080/role-of-electromagnetic-navigational-bronchoscopy-in-pulmonary-nodule-management
#11
REVIEW
Aditya Goud, Chanukya Dahagam, David P Breen, Saiyad Sarkar
The incidence of pulmonary nodules and lung cancer is rising. Some of this increase in incidence is due to improved pick up by newer imaging modalities. However, the goal is to diagnose these lesion, many of which are located in the periphery, by safe and relatively non-invasive methods. This has led to the emergence of numerous techniques such as electromagnetic navigational bronchoscopy (ENB). Current evidence supports a role for these techniques in the diagnostic pathway. However, numerous factor influence the diagnostic accuracy...
July 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/27600892/-potentials-of-intraoperative-navigation-during-balanced-orbital-bony-decompression-in-thyroid-eye-disease-preliminary-results
#12
Ya O Grusha, D S Ismailova, P A Kochetkov, S S Danilov
UNLABELLED: Precise instrument localization is of great importance in orbital decompression surgery. Different navigation systems were designed to fulfill this task and gained wide acceptance. AIM: to describe principal features and determine advantages of intraoperatively navigated orbital bony decompression. MATERIAL AND METHODS: Data on orbital decompression surgery performed with or without intraoperative image guidance is presented. Each time two surgeons were involved - an ophthalmologist (lateral wall decompression) and otolaryngologist (medial wall decompression)...
July 2016: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/27562588/reducing-intraoperative-duration-and-ionising-radiation-exposure-during-the-insertion-of-distal-locking-screws-of-intramedullary-nails-a-small-scale-study-comparing-the-current-fluoroscopic-method-against-radiation-free-electromagnetic-navigation
#13
Darren Grimwood, Jane Harvey-Lloyd
BACKGROUND: Intramedullary nailing is the standard surgical treatment for mid-diaphyseal fractures of long bones; however, it is also a high radiation dose procedure. Distal locking is regularly cited as a demanding element of the procedure, and there remains a reliance on X-ray fluoroscopy to locate the distal holes. A recently developed electromagnetic navigation (EMN) system allows radiation-free distal locking, with a virtual on-screen image. OBJECTIVE: To compare operative duration, fluoroscopy time and radiation dose when using EMN over fluoroscopy, for the distal locking of intramedullary nails...
August 25, 2016: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/27557095/correction-kinomic-profiling-of-electromagnetic-navigational-bronchoscopy-specimens-a-new-approach-for-personalized-medicine
#14
Joshua C Anderson, Douglas J Minnich, M Christian Dobelbower, Alexander J Denton, Alex M Dussaq, Ashley N Gilbert, Timothy D Rohrbach, Waleed Arafat, Karim Welaya, James A Bonner, Christopher D Willey
[This corrects the article DOI: 10.1371/journal.pone.0116388.].
2016: PloS One
https://www.readbyqxmd.com/read/27500578/-endoscopic-endonasal-surgery-of-paranasal-sinus-osteomas
#15
S A Karpishchenko, E V Bolozneva
This article was designed to summarize the experience gained withendoscopic endonasal removal of paranasal sinus osteomas during the period from January 2013 till February 2016. In addition a review of the relevant literature is presented encompassing the publicationsthat provide information about etiology, pathogenesis, clinical picture, diagnostics, and treatment of bone tumours. The objective of the study was to enhance the effectiveness and safety of the surgical treatment of the patients presenting with paranasal sinus osteomas...
2016: Vestnik Otorinolaringologii
https://www.readbyqxmd.com/read/27492068/electromagnetic-navigation-versus-fluoroscopy-in-aortic-endovascular-procedures-a-phantom-study
#16
Kjetil Tystad Lund, Geir Arne Tangen, Frode Manstad-Hulaas
PURPOSE: To explore the possible benefits of electromagnetic (EM) navigation versus conventional fluoroscopy during abdominal aortic endovascular procedures. METHODS: The study was performed on a phantom representing the abdominal aorta. Intraoperative cone beam computed tomography (CBCT) of the phantom was acquired and merged with a preoperative multidetector CT (MDCT). The CBCT was performed with a reference plate fixed to the phantom that, after merging the CBCT with the MDCT, facilitated registration of the MDCT volume with the EM space...
August 4, 2016: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/27458078/reducing-radiation-exposure-during-crt-implant-procedures-single-center-experience-with-low-dose-fluoroscopy-settings-and-a-sensor-based-navigation-system-mediguide
#17
Bernard Thibault, Blandine Mondésert, Laurent Macle, Marc Dubuc, Katia Dyrda, Mario Talajic, Denis Roy, Léna Rivard, Peter G Guerra, Jason G Andrade, Paul Khairy
INTRODUCTION: Cardiac resynchronization therapy (CRT) implant procedures are often complex and prolonged, resulting in substantial ionizing radiation (IR) exposure to the patient and operator. We assessed the impact of lower-dose fluoroscopy settings and a sensor-based electromagnetic tracking system (Mediguide™, MDG) on reducing IR exposure during CRT implantation. METHODS: A single-center two-group cohort study was conducted on 348 consecutive patients, age 66...
July 26, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27435193/toward-computer-assisted-image-guided-congenital-heart-defect-repair-an-initial-phantom-analysis
#18
David M Kwartowitz, Fuad N Mefleh, G Hamilton Baker
PURPOSE: Radiation exposure in interventional cardiology is an important consideration, due to risk of cancer and other morbidity to the patient and clinical staff. Cardiac catheterizations rely heavily on fluoroscopic imaging exposing both patient and clinician to ionizing radiation. An image-guided surgery system capable of facilitating cardiac catheterizations was developed and tested to evaluate dose reduction. METHODS: Several electromagnetically tracked tools were constructed specifically a 7-Fr catheter with five 5-degree-of-freedom magnetic seeds...
July 19, 2016: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/27431209/robust-colonoscope-tracking-method-for-colon-deformations-utilizing-coarse-to-fine-correspondence-findings
#19
Masahiro Oda, Hiroaki Kondo, Takayuki Kitasaka, Kazuhiro Furukawa, Ryoji Miyahara, Yoshiki Hirooka, Hidemi Goto, Nassir Navab, Kensaku Mori
PURPOSE: Polyps found during CT colonography can be removed by colonoscopic polypectomy. A colonoscope navigation system that navigates a physician to polyp positions while performing the colonoscopic polypectomy is required. Colonoscope tracking methods are essential for implementing colonoscope navigation systems. Previous colonoscope tracking methods have failed when the colon deforms during colonoscope insertions. This paper proposes a colonoscope tracking method that is robust against colon deformations...
July 18, 2016: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/27429230/interactive-navigation-guided-ophthalmic-plastic-surgery-the-usefulness-of-computed-tomography-angiographic-image-guidance
#20
Mohammad Javed Ali, Milind N Naik, Swathi Kaliki, Tarjani Vivek Dave
AIM: The aim of this study was to illustrate the techniques and usefulness of navigation-guided computed tomography angiography in ophthalmic plastic surgery. METHODS: Stereotactic surgeries using computed tomography angiography as the intraoperative image-guiding tool were performed in 3 patients. One patient had widespread eyelid and orbital vascular malformation and the other 2 had orbital mass lesions located in crucial vascular areas. Two procedures used the external approach and one was performed using the endoscopic orbital approach...
September 2016: Ophthalmic Plastic and Reconstructive Surgery
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