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Imaging for deep brain stimulation:The zona incerta at 7 Tesla

World Journal of Radiology 2013年第1期5卷 5-16页

作者： Hans U Kerl Lars Gerigk Marc A Brockmann Sonia Huck Mansour AlZghloul Christoph Groden Thomas Hauser Armin M Nagel Ingo S Nlte Department of Neuroradiology University Medical Center MannheimUniversity of Heidelberg68167 MannheimGermany Division of Radiology German Cancer Research Center69120 HeidelbergGermany Department of Medical Physics and Radiology German Cancer Research Center69120 HeidelbergGermany

AIM:To evaluate different promising magnetic resonance imaging(MRI) methods at 7.0 Tesla(T) for the pre-stereotactic visualization of the zona incerta(ZI).METHODS:Two neuroradiologists qualitatively and quantitatively examined T2-turbo spin-echo(T2-TSE),T1-weighted gradient-echo,as well as FLASH2D-T2Star and susceptibility-weighted imaging(SWI) for the visualization of the ZI at 7.0 T *** and image quality for the ZI were independently examined using a 6-scale grading ***-rater reliability using Cohen's kappa coefficient(κ) were ***-tonoise ratios(CNR),and signal-to-noise ratios(SNR) for the ZI were calculated for all *** in delineation,SNR,and CNR between the sequences were statistically assessed using a paired *** the anatomic validation the coronal FLASH2D-T2Star images were co-registered with a stereotactic atlas(Schaltenbrand-Wahren).RESULTS:The rostral part of the ZI(rZI) could easily be identified and was best and reliably visualized in the coronal FLASH2D-T2Star *** caudal part was not definable in any of the *** major artifacts in the rZI were observed in any of the ***2D-T2Star and SWI imaging offered significant higher CNR values for the rZI compared to T2-TSE images(P > 0.05).The co-registration of the coronal FLASH2D-T2Star images with the stereotactic atlas schema(Schaltenbrand-Wahren) confirmed the correct localization of the ZI in all ***:FLASH2D-T2Star imaging(particularly coronal view) provides the reliable and currently optimal visualization of the rZI at 7.0 *** results can facilitate a better and more precise targeting of the caudal part of the ZI than ever before.

关键词： Deep brain stimulation Essential tremor Magnetic resonance imaging Parkinson’s disease Zona incerta 7 Tesla

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