INTRODUCTION: 3-Tesla (T) magnetic resonance imaging (MRI) offers high resolution imaging with improved signal quality. It also allows for improved functional investigations, most prominently with respect to fiber tracts and their relation to pathological lesions. Up to now, patients with adjustable shunt systems were not eligible for high field power magnetic resonance imaging. We have evaluated the effects of this technique upon a newly developed adjustable shunt valve. METHOD: Ten adjustable shunt devices were examined during routine and functional 3-T high field MRI examinations. Pressure settings were checked after 17 examinations each for all valves. There were no changes in pressure setting at all possible levels in any of the tested devices. No problems with the adjusting mechanism were observed during 340 examinations. CONCLUSION: This new shunt device offers the diagnostic benefit of high field magnetic resonance imaging in shunt-dependent patients who need an adjustable valve. The valve is not affected by higher magnetic field power and does not require readjustment of the pressure settings after MRI examination.
INTRODUCTION: 3-Tesla (T) magnetic resonance imaging (MRI) offers high resolution imaging with improved signal quality. It also allows for improved functional investigations, most prominently with respect to fiber tracts and their relation to pathological lesions. Up to now, patients with adjustable shunt systems were not eligible for high field power magnetic resonance imaging. We have evaluated the effects of this technique upon a newly developed adjustable shunt valve. METHOD: Ten adjustable shunt devices were examined during routine and functional 3-T high field MRI examinations. Pressure settings were checked after 17 examinations each for all valves. There were no changes in pressure setting at all possible levels in any of the tested devices. No problems with the adjusting mechanism were observed during 340 examinations. CONCLUSION: This new shunt device offers the diagnostic benefit of high field magnetic resonance imaging in shunt-dependent patients who need an adjustable valve. The valve is not affected by higher magnetic field power and does not require readjustment of the pressure settings after MRI examination.
Authors: Iris-Melanie Nöbauer-Huhmann; Ahmed Ba-Ssalamah; Vladimir Mlynarik; Markus Barth; Alexander Schöggl; Karl Heimberger; Christian Matula; Amura Fog; Alexandra Kaider; Siegfried Trattnig Journal: Invest Radiol Date: 2002-03 Impact factor: 6.016
Authors: Regula S Briellmann; Gaby S Pell; R Mark Wellard; L Anne Mitchell; David F Abbott; Graeme D Jackson Journal: Epileptic Disord Date: 2003-03 Impact factor: 1.819
Authors: Tycho J Zuzak; Bettina Balmer; Daniel Schmidig; Eugen Boltshauser; Michael A Grotzer Journal: Childs Nerv Syst Date: 2008-12-05 Impact factor: 1.475
Authors: Juan F Martínez-Lage; María-José Almagro; Isabel Sanchez Del Rincón; Miguel A Pérez-Espejo; Claudio Piqueras; Raúl Alfaro; Javier Ros de San Pedro Journal: Childs Nerv Syst Date: 2007-10-09 Impact factor: 1.475