Study of deep brain stimulation lead resonant length in 3.0 T MRI RF magnetic field

2016 ◽  
Vol 52 (13) ◽  
pp. 1098-1100 ◽  
Author(s):  
Xiaolong Mo ◽  
Changqing Jiang ◽  
Jianqi Ding ◽  
Feng Zhang ◽  
Luming Li
2012 ◽  
Vol 117 (6) ◽  
pp. 1155-1165 ◽  
Author(s):  
Hans U. Kerl ◽  
Lars Gerigk ◽  
Ioannis Pechlivanis ◽  
Mansour Al-Zghloul ◽  
Christoph Groden ◽  
...  

Object Reliable visualization of the subthalamic nucleus (STN) is indispensable for accurate placement of electrodes in deep brain stimulation (DBS) surgery for patients with Parkinson disease (PD). The aim of the study was to evaluate different promising new MRI methods at 3.0 T for preoperative visualization of the STN using a standard installation protocol. Methods Magnetic resonance imaging studies (T2-FLAIR, T1-MPRAGE, T2*-FLASH2D, T2-SPACE, and susceptibility-weighted imaging sequences) obtained in 9 healthy volunteers and in 1 patient with PD were acquired. Two neuroradiologists independently analyzed image quality and visualization of the STN using a 6-point scale. Interrater reliability, contrast-to-noise ratios, and signal-to-noise ratios for the STN were calculated. For illustration of the anatomical accuracy, coronal T2*-FLASH2D images were fused with the corresponding coronal section schema of the Schaltenbrand and Wahren stereotactic atlas. Results The STN was best and reliably visualized on T2*-FLASH2D imaging (in particular, the coronal view). No major artifacts in the STN were observed in any of the sequences. Susceptibility-weighted, T2-SPACE, and T2*-FLASH2D imaging provided significantly higher contrast-to-noise ratio values for the STN than standard T2-weighted imaging. Fusion of the coronal T2*-FLASH2D and the digitized coronal atlas view projected the STN clearly within the boundaries of the STN found in anatomical sections. Conclusions For 3.0-T MRI, T2*-FLASH2D (particularly the coronal view) provides optimal delineation of the STN using a standard installation protocol.


2015 ◽  
Vol 51 (11) ◽  
pp. 1-4 ◽  
Author(s):  
Jie Fan ◽  
Joanna L. X. Li ◽  
Jessica Li ◽  
Tie Cheng Wu ◽  
Xiaoping Li

2018 ◽  
Vol 75 (7) ◽  
pp. 448-454
Author(s):  
Thomas Grunwald ◽  
Judith Kröll

Zusammenfassung. Wenn mit den ersten beiden anfallspräventiven Medikamenten keine Anfallsfreiheit erzielt werden konnte, so ist die Wahrscheinlichkeit, dies mit anderen Medikamenten zu erreichen, nur noch ca. 10 %. Es sollte dann geprüft werden, warum eine Pharmakoresistenz besteht und ob ein epilepsiechirurgischer Eingriff zur Anfallsfreiheit führen kann. Ist eine solche Operation nicht möglich, so können palliative Verfahren wie die Vagus-Nerv-Stimulation (VNS) und die tiefe Hirnstimulation (Deep Brain Stimulation) in eine bessere Anfallskontrolle ermöglichen. Insbesondere bei schweren kindlichen Epilepsien stellt auch die ketogene Diät eine zu erwägende Option dar.


2008 ◽  
Author(s):  
Jonathan D. Richards ◽  
Paul M. Wilson ◽  
Pennie S. Seibert ◽  
Carin M. Patterson ◽  
Caitlin C. Otto ◽  
...  

2009 ◽  
Author(s):  
Hunter Covert ◽  
Pennie S. Seibert ◽  
Caitlin C. Otto ◽  
Missy Coblentz ◽  
Nicole Whitener ◽  
...  

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