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Recent Findings from University of Oxford Has Provided New Information about Magnetic Resonance Imaging (A Controllable Susceptibility Marker for...

July 25, 2014

Recent Findings from University of Oxford Has Provided New Information about Magnetic Resonance Imaging (A Controllable Susceptibility Marker for Passive Device Tracking)

By a News Reporter-Staff News Editor at Health & Medicine Week -- Investigators discuss new findings in Medical Imaging. According to news reporting out of Oxford, United Kingdom, by NewsRx editors, research stated, "To design and demonstrate a new susceptibility-based tracking device with an artifact that can be mechanically turned on and off, thus permitting tracking and imaging at the device tip with limited artifact. The magnetic susceptibilities of readily obtainable grades of titanium and graphite were measured."

Our news journalists obtained a quote from the research from the University of Oxford, "Using numerical optimization, layer thicknesses for three concentric cylinders were found where the field from the graphite layer maximally cancelled the fields from titanium layers. The tracking elements were fabricated for an outer diameter of 3 mm and attached to a catheter to show feasibility of detection in phantoms and in vivo. The device was successfully integrated into a 9F catheter, and its use with conventional guidewires under fluoroscopy was demonstrated by guiding the catheter through the bifurcation into the carotid artery. MR images including the catheter tip were acquired with the device in both the 'on' and 'off' positions. A new passive tracking device with a susceptibility effect that can be enabled and disabled by sliding one of the components was designed, fabricated, and demonstrated in phantoms and in vivo."

According to the news editors, the research concluded: "The device may also be integrated into many different interventional MR devices such as needles, ultrasound transducers for prostate biopsy, or any catheter-based devices."

For more information on this research see: A Controllable Susceptibility Marker for Passive Device Tracking. Magnetic Resonance in Medicine, 2014;72(1):269-275. Magnetic Resonance in Medicine can be contacted at: Wiley-Blackwell, 111 River St, Hoboken 07030-5774, NJ, USA. (Wiley-Blackwell -; Magnetic Resonance in Medicine -

Our news journalists report that additional information may be obtained by contacting W. Dominguez-Viqueira, University of Oxford, Nuffield Dept. of Clin Neurosci, Oxford, United Kingdom. Additional authors for this research include H. Karimi, W.W. Lam and C.H. Cunningham (see also Medical Imaging).

Keywords for this news article include: Oxford, Europe, United Kingdom, Medical Imaging

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Source: Health & Medicine Week

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