scholarly journals Targeting the Subthalamic Nucleus for Deep Brain Stimulation in Parkinson Disease: The Impact of High Field Strength MRI

Author(s):  
Dirk Winkler ◽  
Marc Tittgemeyer ◽  
Karl Strecker ◽  
Axel Goldammer ◽  
Jochen Helm ◽  
...  
2009 ◽  
Vol 111 (4) ◽  
pp. 737-745 ◽  
Author(s):  
Hiroki Toda ◽  
Nobukatsu Sawamoto ◽  
Takashi Hanakawa ◽  
Hidemoto Saiki ◽  
Sadayuki Matsumoto ◽  
...  

Object Accurate localization of the subthalamic nucleus (STN) is important for proper placement of the electrodes in deep brain stimulation (DBS) surgery for patients with advanced Parkinson disease. The authors evaluated the accuracy of our modified composite targeting method and the value of using high-field MR imaging for targeting the STN. Methods Thirteen patients with advanced Parkinson disease underwent bilateral STN DBS based on 3-T MR imaging, and 13 patients underwent surgery based on 1.5-T MR imaging. By sequentially referring to the postmammillary commissure, the red nucleus, the mammillothalamic tract, and the STN, the modified composite targeting method determined the stereotactic coordinates for targeting the STN. The accuracy and efficacy of the composite targeting method and 3-T MR imaging were evaluated by using the intraoperative microelectrode recording, the postoperative imaging study, and the postoperative clinical improvement. Results The landmark structures for targeting the STN were visualized clearly with 3-T MR imaging. The mean (± SD) path length through the STN of the central track was 4.9 ± 1.1 mm in the 3-T group and 3.1 ± 2.0 mm in the 1.5-T group (p < 0.001). Twenty-one (81%) of 26 electrodes were placed in the central track in the 3-T group, whereas 8 (31%) of 26 electrodes were placed in the central track in the 1.5-T group (p = 0.006). The rest of the electrodes were placed in the noncentral optimum track for alleviating parkinsonian motor symptoms. The mean Unified Parkinson's Disease Rating Scale motor part score during off period was reduced by 53% in the 3-T group and by 41% in the 1.5-T group (p = 0.14). The mean reductions of levodopa equivalent daily doses were 48.6% in the 3-T group and 43.7% in the 1.5-T group (p = 0.61). Conclusions The use of the modified composite targeting method referring to the multiple landmarks with 3-T MR imaging offers reliable and clinically effective target for STN DBS surgery.


2009 ◽  
Vol 463 (1) ◽  
pp. 12-16 ◽  
Author(s):  
Peter Novak ◽  
Joshua A. Klemp ◽  
Larry W. Ridings ◽  
Kelly E. Lyons ◽  
Rajesh Pahwa ◽  
...  

2002 ◽  
Vol 96 (4) ◽  
pp. 666-672 ◽  
Author(s):  
Tanya Simuni ◽  
Jurg L. Jaggi ◽  
Heather Mulholland ◽  
Howard I. Hurtig ◽  
Amy Colcher ◽  
...  

Object. Palliative neurosurgery has reemerged as a valid therapy for patients with advanced Parkinson disease (PD) that is complicated by severe motor fluctuations. Despite great enthusiasm for long-term deep brain stimulation (DBS) of the subthalamic nucleus (STN), existing reports on this treatment are limited. The present study was designed to investigate the safety and efficacy of bilateral stimulation of the STN for the treatment of PD. Methods. In 12 patients with severe PD, electrodes were stereotactically implanted into the STN with the assistance of electrophysiological conformation of the target location. All patients were evaluated preoperatively during both medication-off and -on conditions, as well as postoperatively at 3, 6, and 12 months during medication-on and -off states and stimulation-on and -off conditions. Tests included assessments based on the Unified Parkinson's Disease Rating Scale (UPDRS) and timed motor tests. The stimulation effect was significant in patients who were in the medication-off state, resulting in a 47% improvement in the UPDRS Part III (Motor Examination) score at 12 months, compared with preoperative status. The benefit was stable for the duration of the follow-up period. Stimulation produced no additional benefit during the medication-on state, however, when compared with patient preoperative status. Significant improvements were made in reducing dyskinesias, fluctuations, and duration of off periods. Conclusions. This study demonstrates that DBS of the STN is an effective treatment for patients with advanced, medication-refractory PD. Deep brain stimulation of the STN produced robust improvements in motor performance in these severely disabled patients while they were in the medication-off state. Serious adverse events were common in this cohort; however, only two patients suffered permanent sequelae.


2018 ◽  
Vol 8 (4) ◽  
pp. 66 ◽  
Author(s):  
Elena Khabarova ◽  
Natalia Denisova ◽  
Aleksandr Dmitriev ◽  
Konstantin Slavin ◽  
Leo Verhagen Metman

Neurosurgery ◽  
2021 ◽  
Vol 89 (Supplement_2) ◽  
pp. S143-S143
Author(s):  
Kyle T Mitchell ◽  
John R Younce ◽  
Scott A Norris ◽  
Samer D Tabbal ◽  
Joshua L Dowling ◽  
...  

2020 ◽  
pp. 85-88
Author(s):  
Anjali Gera ◽  
Gian Pal

More than 50% of patients with Parkinson disease (PD) can have chronic pain. PD pain has been associated with reduced quality of life scores on validated measures. The most common source of PD pain is musculoskeletal in origin. This pain may manifest as rigidity, cramps, shoulder discomfort, spinal or hand and foot deformities, dystonic pain, or nonradicular back pain. Our case illustrates improvement in chronic pain following bilateral subthalamic nucleus (STN) deep brain stimulation (DBS) surgery in a 45-year-old patient with PD. Approximately 1 year after PD onset, he developed constant pain and tremor in his left upper extremity, which gradually worsened over time. Initially, carbidopa/levodopa completely alleviated both his arm tremor and pain. Over the next several years, he developed off periods that were associated with bothersome tremor and pain, and on periods that were associated with prominent neck and left arm dyskinesia, both of which were associated with significant pain. At age 60 years, after 15 years of PD, he underwent bilateral STN DBS implantation. Following DBS, he had significant improvement in his left arm tremor, rigidity, motor fluctuations, and pain. He also had a 70% reduction in his dopaminergic medication and complete resolution of dyskinesia and neck pain.


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