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Electromagnetic Navigation

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
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
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
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
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
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
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
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
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
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
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
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
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
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
Fumihiro Asano
Bronchoscopy to examine peripheral pulmonary lesions is performed using a bronchoscope with an outer diameter of 5-6mm under fluoroscopy, but the diagnostic yield can be insufficient. Problems with transbronchial biopsy include a limited range of bronchoscope insertion, difficulty in guiding a bronchoscope and biopsy instruments to lesions, and insufficient confirmation of the arrival of biopsy instruments at the target lesion; as such, new techniques have been used to overcome these individual problems. Radial-endobronchial ultrasound is used to identify peripheral pulmonary lesions and sampling sites...
July 2016: Respiratory Investigation
Guler Ozgul, Erdogan Cetinkaya, Mehmet Akif Ozgul, Yasin Abul, Atayla Gencoglu, Emine Kamiloglu, Sule Gul, H Erhan Dincer
BACKGROUND AND OBJECTIVES: Electromagnetic navigation bronchoscopy (ENB) is a promising new technology to increase the diagnostic yield of peripheral lung and mediastinal lesions. Conventional flexible bronchoscopy has a limited yield in peripheral pulmonary lesions, even in experienced hands. Radial endobronchial ultrasound (r-EBUS) with its real-time imaging capability can help to diagnose peripheral pulmonary lesions. In the present study, we aimed to investigate the diagnostic yield and safety of ENB with or without r-EBUS for peripheral lung lesions...
May 2016: Endoscopic Ultrasound
Ilya G Berim, Albert Naveed, Freshta Sahak
Two peripheral lung nodules suspicious for lung cancer were noted in a patient. Surgical and CT-guided transthoracic needle biopsies were deemed to be high risk given advanced emphysema. The patient received nondiagnostic electromagnetic navigation bronchoscopy and endobronchial ultrasound (EBUS)-guided mediastinal needle biopsies. Repeat bronchoscopy was then performed. The lung nodules were difficult to visualize with both convex probe EBUS and electromagnetic navigation bronchoscopy guidance. Normal saline injection into vicinity of the peripheral lung nodule was then used in hopes of filling airspace with fluid and improving visualization of the lung nodule...
June 29, 2016: Journal of Bronchology & Interventional Pulmonology
Yipeng Hu, Veeru Kasivisvanathan, Lucy A M Simmons, Matthew J Clarkson, Steve A Thompson, Taimur T Shah, Hashim U Ahmed, Shonit Punwani, David J Hawkes, Mark Emberton, Caroline M Moore, Dean C Barratt
: Three- and four-dimensional transrectal ultrasound transducers are now available from most major ultrasound equipment manufacturers, but currently are incorporated into only one commercial prostate biopsy guidance system. Such transducers offer the benefits of rapid volumetric imaging, but can cause substantial measurement distortion in electromagnetic tracking sensors, which are commonly used to enable 3D navigation. In this paper, we describe the design, development and validation of a 3D-ultrasound-guided transrectal prostate biopsy system that employs high-accuracy optical tracking to localize the ultrasound probe and prostate targets in 3D physical space...
June 21, 2016: IEEE Transactions on Bio-medical Engineering
Pietro Nardelli, Alexander Jaeger, Conor O'Shea, Kashif A Khan, Marcus P Kennedy, Pádraig Cantillon-Murphy
PURPOSE: Lung cancer still represents the leading cause of cancer-related death, and the long-term survival rate remains low. Computed tomography (CT) is currently the most common imaging modality for lung diseases recognition. The purpose of this work was to develop a simple and easily accessible virtual bronchoscopy system to be coupled with a customized electromagnetic (EM) tracking system for navigation in the lung and which requires as little user interaction as possible, while maintaining high usability...
June 21, 2016: International Journal of Computer Assisted Radiology and Surgery
Noritaka Komune, Ken Matsushima, Satoshi Matsuo, Sam Safavi-Abbasi, Nozomu Matsumoto, Albert L Rhoton
OBJECTIVES/HYPOTHESIS: Image-guided optical tracking systems are being used with increased frequency in lateral skull base surgery. Recently, electromagnetic tracking systems have become available for use in this region. However, the clinical accuracy of the electromagnetic tracking system has not been examined in lateral skull base surgery. This study evaluates the accuracy of electromagnetic navigation in lateral skull base surgery. STUDY DESIGN: Cadaveric and radiographic study...
June 15, 2016: Laryngoscope
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