| |
|
TRACKER & APPLICATION
|
TITLE
|
ABSTRACT
|
| Steve Wagner |
Radiology Today, November 30, 2009, Volume 10 No. 19, p.32 |
|
Alternative Guidance Systems Minimize X-Ray Exposure |
For years, physicians have wrestled with a well-known
dilemma: how to avoid the risks posed by the radiation they
use to ensure pinpoint accuracy in the operating room and
interventional suite.
Many ignore contact with the fluoroscopy beam, looking the other way and hoping for
the best. Others wear lead aprons that leave the thyroid area, eyes, and hands exposed.
A few cover themselves from head to toe...
To read more, go to:
www.radiologytoday.com |
| Liz Etchells |
Civco On-Line: Program Ultrasound, December 22, 2009 |
3D Guidance driveBAY with 0.9 mm Sensor. Biopsy Needle Guidance. |
Introducing eTRAX™ |
CIVCO Medical Solutions has introduced eTRAX, a breakthrough needle guidance system, expanding real-time image-guided navigation into a new dimension. Featuring an electromagnetic sensor embedded into the needle tip, eTRAX is an image-guidance tool kit which supports image fusion for ultrasound and enables real-time 3D instrument guidance in a variety of clinical settings. eTRAX acts as a real-time, 3D anatomical roadmap for the body, aiding in minimally invasive procedures...
To read more, go to:
http://programonline.civco.com |
| Wolfgang, Wein |
Medical Image Computing and Computer - Assisted Intervention Conference
(MICCAI 2009), Part I, LNCS 5761, pp. 9-16, Springer-Verlag Berlin Heidelberg 2009.
|
3D Guidance medSAFE (microBIRD) |
Towards Guidance of Electrophysiological Procedures with Real-Time 3D Intracardiac Echocardiography Fusion to C-Arm CT. |
This paper describes a novel method for improving the navigation and guidance of devices and catheters in electrophysiology and interventional cardiology procedures. using volumetric data fusion. The clinical workflow includes the acquisition and reconstruction of CT data from a C-Arm X-ray angiographic system and the real-time acquisition of volumetric ultrasound datasets with a new intracardiac real-time 3D ultrasound catheter.
To read more, go to:
www.springerlink.com |
| Calin Caluser, Silviu Andrei, Bogdan Gheorghe |
12th World Congress of the World Federation for Ultrasound in Medicine and Biology, Australia
30 August - 3 September 2009 |
|
A New Three-Dimensional Mapping System For Routine Free Hand Ultrasound Examinations. |
Diagnostic ultrasound (US) is among the most frequently used and valuable imaging modalities, also one of the most operator dependent imaging modalities. Accurate labeling and measuring in the ultrasound images is crucial for diagnostic and treatment purposes. The currently available ultrasound machines require manual labeling of images at acquisition, which is time consuming and has limited accuracy...
To read more contact Ascension. |
| Timothy
D. Soper, et al |
13th World Conference on Lung Cancer, Vancouver, BC, Canada, July 31 - August 4th, 2009 |
|
Tracking an Ultrathin Bronchoscope to Reach Peripheral Nodules with Laser-Based Diagnostics Endoscopy and Intervention Bronchoscopy. |
Background: Current bronchoscopes have a physical sensor for each display pixel. Reducing bronchoscope size reduces image resolution and quality. By placing a custom lensed microscanner (1-mm diameter, 8-mm length) at the bronchoscope distal tip, laser light is scanned to generate high-resolution (500-line) wide-field (80º) images at video rate (30Hz). With this technology, a 1.6 mm O.D. scanning fiber bronchoscope (SFB) has been developed and coupled with an intraoperative tracking system and laser diagnostics for image-guided biopsy of peripheral nodules...
To read more contact Ascension. |
| Brown, Kathryn M, et al |
Journal of Biomechanics,
Program in Physical Therapy, University of Minnesota, Minneapolis, pp. 1263-1269, June 19, 2009 |
|
Consideration of Digitization Precision When Building Local Coordinate Axes for a Foot Model. |
This study investigated whether points digitized for the purpose of embedding coordinate systems into the foot accurately represented the orientation of the bone described. Eight complete data sets were collected from 9 adult cadaver specimens. Palpable landmarks defined 5 segments to include the calcaneus, navicular, medial cuneiform, first metatarsal, and hallux. With use of the Flock of Birds electromagnetic motion tracking device, a single examiner digitized a minimum of 3 points for each segment...
To read more , go to:
http://ncbi.nlm.nig.gov |
| Timothy
D. Soper, et al |
Medical Imaging 2009: Visualization, Image-Guided Procedures, and Modeling. Proceedings of the SPIE, Volume 7261, pp. 72610C-13 (2009) |
|
Validation of CT-Video Registration for Guiding a Novel Ultrathin Bronchoscope to Peripheral Lung Nodules Using Electromagnetic Tracking. |
The development of an ultrathin scanning fiber bronchoscope (SFB) at the University of Washington permits bronchoscopic examination of small peripheral airways inaccessible to conventional bronchoscopes. Due to the extensive branching in higher generation airways, a form of bronchoscopic guidance is needed. For accurate intraoperative localization of the SFB, we propose a hybrid approach, using electromagnetic tracking (EMT) and 2D/3D registration of bronchoscopic video images to a preoperative CT scan...
To read more , go to:
http://adsabs.harvard.edu |
| Dominik Karch, et al |
Journal of Biomechanics, Volume 41, Issue 13 (2008) pp. 2860-2867 |
Analysis of movements in infants. |
Quantification of the Segmental Kinematics of Spontaneous Infant Movements.
|
This article introduces a method to capture the movements of the upper and the lower limb of infants. It uses an electromagnetic tracking system reliably calculate the segmental kinematics. Analysis of the spontaneous movements of infants is important e.g. in the context of the “General Movement Analysis”, which aims at the early diagnosis of motor dysfunctions. Due to special constraints regarding infant anatomy, previous approaches based on optical tracking could only gather position data of the infant’ segments, whereas with this method relative segment angles can be calculated...
To read more , go to:
http://linkinghub.elsevier.com |
| Nienke Assink, Gert J DBergman, et al |
Man Ther, Volume 13, Nr 5, Centre for Rehabilitation, University Medical Centre Groningen, University of Groningen, The Netherlands, 2008 |
Biomedical research and analysis |
Assessment of the Cervical Range of Motion Over Time, Differences Between Results of the Flock of Birds and the EDI-320: a Comparison Between an Electromagnetic Tracking System and an Electronic Inclinometer.
|
The objective of this study was to analyze cervical range of motion, assessed over time by means of a digital inclinometer (EDI-320) and a three-dimensional electromagnetic tracking device.The maximum active cervical range of motion was assessed with two measurement devices in three sessions over time, with 6-week intervals. In total, 26 women and 24 men (mean age: 44.4, SD: 9.9) without known pathology of the cervical spine participated...
To read more, go to:
http://linkinghub.elsevier.com
|
| Helen Alexandra Anema |
PhD Dissertation, University of Utrecht, Utrecht, The Netherlands, Nov. 12, 2008 |
The relationship between brain function and tactile simulation and feedback. |
Touching upon Tactile Processing: Output Dependent
Somatosensory Functions in the Brain.
|
To read this paper, go to:
www.fss.uu.nl |
| Christopher Nafis, Vern Jensen, Ron von Jako |
SPIE Medical Imaging 2008, Volume 6918; Vizualization, Image-Guided Procedures and Modeling, February 17-23, 2008 |
Evaluation of the effect of operating tables on performance of electromagnetic trackers.
|
Method for Evaluating Compatibility of Commercial Electromagnetic (EM) Catheter Tracking Systems with Surgical and Imaging Tables
|
Electromagnetic (EM) tracking systems have been successfully used for Surgical Navigation in ENT, cranial, and spine applications for several years. Catheter sized micro EM sensors have also been used in tightly controlled cardiac mapping and pulmonary applications. EM systems have the benefit over optical navigation systems of not requiring a line-of-sight between devices...
To read more, go to:
http://cat.inist.fr |
| Emmanuel Wilson, Ziv Yaniv, David Lindisch, Kevin Cleary |
SPIE Medical Imaging 2008, Volume 6918; Vizualization, Image-Guided Procedures and Modeling, February 17-23, 2008 |
Factors to consider when specifying an electromagnetic tracker for image guided procedures. |
A Buyer's Guide to Electromagnetic Tracking Systems for Clinical Applications. |
When choosing an Electromagnetic Tracking System (EMTS) for image-guided procedures, it is desirable for the system to be usable for different procedures and environments. Several factors influence this choice. To date, the only factors that have been studied extensively are the accuracy and the susceptibility of electromagnetic tracking systems to distortions caused by ferromagnetic materials. In this paper we provide a holistic overview of the factors that should be taken into account when choosing an EMTS...
To read more, go to:
http://harvard.edu |
| LM Riek, PM Ludewig , DA Nawoczenski |
Spinal Cord (2008), 46, pp.335-343 |
Kinematic Analysis. |
Comparative Shoulder Kinematics During Free Standing, Standing Depression lifts and daily Functional Activities in Persons with Paraplegia: Considerations for Shoulder Health. |
To compare and contrast three-dimensional shoulder kinematics during frequently utilized upper extremity weight-bearing activities (standing depression lifts used in brace walking, weight-relief raises, transfers) and postures (sitting rest, standing in a frame) in spinal cord injury (SCI)...
To read more, go to:
www.nature.com/sc |
| R.S.J. Estepar, Nicolas Stylopoulos, Kirby Vosburgh |
Computer Aided Surgery. Volume 12, November 6, 2007.pp.311-324 |
3D navigation system for endoscopic and transgastric access and intervention. |
Towards Scarless Surgery: An Endoscopic-Ultrasound Navigation System for Transgastic Access Procedures. |
Scarless surgery is a new and very promising technique that can mark a new era in surgical procedures. We have created and validated a navigation system for endoscopic and transgastric access interventions in in vivo pilot studies. The system provides augmented visual feedback and additional contextual information by establishing a correspondence between the real time endoscopic ultrasound image and a preoperative CT volume using rigid registration...
To read this paper, go to:
http://lmi.bwh.harward.edu |
| Sztum, Tony, et al |
Arch Phys Med Rehabil, Vol 89, November 2008 |
Task-Specific Rehabilitation of Finger-Hand Function Using Interactive Computer Gaming. |
The present case study assessed the feasibility of using an interactive gaming system, coupled with the manipulation of common objects, as a form of repetitive, task-specific movement therapy. Three adults with moderate chronic motor impairments of the fingers and hand participated: one 36-year-old man with an incomplete cervical spinal cord injury, one 60-year-old man with a left cortical cerebro-vascular accident, and one 38-year-old woman with left hemiplegic cerebral palsy...
To read more, go to:http://linkinghub.elsevier.com |
| Yiyong Sun, et al |
MICCAI 2007
Medical Image Computing and Computer- Assisted Intervention Conference
http://www.miccai.org |
3D localization of 3D-intracardiac echo (ICE) catheter tip with microBIRD tracker.
|
Image Guidance of Intracardiac Ultrasound with Fusion of Pre-operative Images. |
This paper presents a method for registering 3D intracardiac echo (ICE) to pre-operative images. A magnetic tracking sensor is integrated on the ICE catheter tip to provide the 3D location and orientation. The user guides the catheter into the patient heart to acquire a series of ultrasound images covering the anatomy of the heart chambers. An automatic intensity-based registration algorithm is applied to align these ultrasound images with pre-operative images. One of the important applications is to help electrophysiology doctors to treat complicated atrial fibrillation cases...
To read more, go to:
http://www.springerlink.com |
| Wolfgang Wein, et al |
MICCAI 2007
Medical Image Computing and Computer- Assisted Intervention Conference
http://www.miccai.org
|
Simulation and Fully Automatic Multimodal Registration of Medical Ultrasound |
The fusion of 3D freehand ultrasound with CT and CTA has benefits for a variety of clinical applications, however a lot of manual work is usually required for correct registration. We developed new methods that allow one to simulate medical ultrasound from CT in real-time, reproducing the majority of ultrasonic imaging effects. The second novelty is a robust similarity measure that assesses the correlation of a combination of multiple signals extracted from CT with ultrasound, without knowing the influence of each signal...
To read more, go to:
http://www.springerlink.com |
| Timothy
D. Soper, et al |
SPIE Medical Imaging 2007: Visualization and Image-Guided Procedures |
3D
guidance of medical instruments for
bronchoscopy. |
A
Model of Respiratory Airway Motion for Real-Time Tracking
of an Ultrathin Bronchoscope |
Deformable registration of chest CT scans taken of a subject at various phases of respiration provide a direct measure of the spatially varying displacements that occur in the lung due to breathing. This respiratory motion was studied as part of the development of a CT-based guidance system for a new electromagnetically tracked ultrathin bronchoscope. Fifteen scans of an anesthesized pig were acquired at five distinct lung pressures between full expiration to full inspiration...
To read more, go to:
http://adsabs.harvard.edu |
