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Verlaat L, Rijks N, Dilai J, Admiraal M, Beudel M, de Bie RM, van der Zwaag W, Schuurman R, van den Munckhof P, Bot M. 7-Tesla Magnetic Resonance Imaging Scanning in Deep Brain Stimulation for Parkinson's Disease: Improving Visualization of the Dorsolateral Subthalamic Nucleus. Mov Disord Clin Pract 2024; 11:373-380. [PMID: 38385792 PMCID: PMC10982587 DOI: 10.1002/mdc3.13982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 12/14/2023] [Accepted: 01/05/2024] [Indexed: 02/23/2024] Open
Abstract
BACKGROUND Identifying the dorsolateral subthalamic nucleus (STN) for deep brain stimulation (DBS) in Parkinson's disease (PD) can be challenging due to the size and double-oblique orientation. Since 2015 we implemented 7-Tesla T2 weighted magnetic resonance imaging (7 T T2) for improving visualization and targeting of the dorsolateral STN. We describe the changes in surgical planning and outcome since implementation of 7 T T2 for DBS in PD. METHODS By comparing two cohorts of STN DBS patients in different time periods we evaluated the influence of 7 T T2 on STN target planning, the number of microelectrode recording (MER) trajectories, length of STN activity and the postoperative motor (UPDRS) improvement. RESULTS From February 2007 to January 2014, 1.5 and 3-Tesla T2 guided STN DBS with 3 MER channels was performed in 76 PD patients. Average length of recorded STN activity in the definite electrode trajectory was 3.9 ± 1.5 mm. From January 2015 to January 2022 7 T T2 and MER-guided STN DBS was performed in 182 PD patients. Average length of recorded STN activity in the definite electrode trajectory was 5.1 ± 1.3 mm and used MER channels decreased from 3 to 1. Average UPDRS improvement was comparable. CONCLUSION Implementation of 7 T T2 for STN DBS enabled a refinement in targeting. Combining classical DBS targeting with dorsolateral STN alignment may be used to determine the optimal trajectory. The improvement in dorsolateral STN visualization can be used for further target refinements, for example adding probabilistic subthalamic connectivity, to enhance clinical outcome of STN DBS.
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Affiliation(s)
- Lisa Verlaat
- Department of NeurosurgeryUniversity Medical Centers, Academic Medical CenterAmsterdamthe Netherlands
| | - Niels Rijks
- Department of NeurosurgeryUniversity Medical Centers, Academic Medical CenterAmsterdamthe Netherlands
| | - José Dilai
- Department of Neurology and Clinical NeurophysiologyUniversity Medical Centers, Academic Medical CenterAmsterdamthe Netherlands
| | - Marjolein Admiraal
- Department of Neurology and Clinical NeurophysiologyUniversity Medical Centers, Academic Medical CenterAmsterdamthe Netherlands
| | - Martijn Beudel
- Department of Neurology and Clinical NeurophysiologyUniversity Medical Centers, Academic Medical CenterAmsterdamthe Netherlands
| | - Rob M.A. de Bie
- Department of Neurology and Clinical NeurophysiologyUniversity Medical Centers, Academic Medical CenterAmsterdamthe Netherlands
| | - Wietske van der Zwaag
- Spinoza Centre for Neuroimaging, Royal Netherlands Academy of Arts and SciencesAmsterdamthe Netherlands
| | - Rick Schuurman
- Department of NeurosurgeryUniversity Medical Centers, Academic Medical CenterAmsterdamthe Netherlands
| | - Pepijn van den Munckhof
- Department of NeurosurgeryUniversity Medical Centers, Academic Medical CenterAmsterdamthe Netherlands
| | - Maarten Bot
- Department of NeurosurgeryUniversity Medical Centers, Academic Medical CenterAmsterdamthe Netherlands
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Budnick HC, Schneider D, Zauber SE, Witt TC, Gupta K. Susceptibility-Weighted MRI Approximates Intraoperative Microelectrode Recording During Deep Brain Stimulation of the Subthalamic Nucleus for Parkinson's Disease. World Neurosurg 2024; 181:e346-e355. [PMID: 37839566 DOI: 10.1016/j.wneu.2023.10.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 10/10/2023] [Indexed: 10/17/2023]
Abstract
BACKGROUND Deep brain stimulation of the subthalamic nucleus (STN-DBS) for Parkinson's disease can be performed with intraoperative neurophysiological and radiographic guidance. Conventional T2-weighted magnetic resonance imaging sequences, however, often fail to provide definitive borders of the STN. Novel magnetic resonance imaging sequences, such as susceptibility-weighted imaging (SWI), might better localize the STN borders and facilitate radiographic targeting. We compared the radiographic location of the dorsal and ventral borders of the STN using SWI with intraoperative microelectrode recording (MER) during awake STN-DBS for Parkinson's disease. METHODS Thirteen consecutive patients who underwent placement of 24 STN-DBS leads for Parkinson's disease were analyzed retrospectively. Preoperative targeting was performed with SWI, and MER data were obtained from intraoperative electrophysiology records. The boundaries of the STN on SWI were identified by a blinded investigator. RESULTS The final electrode position differed significantly from the planned coordinates in depth but not in length or width, indicating that MER guided the final electrode depth. When we compared the boundaries of the STN by MER and SWI, SWI accurately predicted the entry into the STN but underestimated the length and ventral boundary of the STN by 1.2 mm. This extent of error approximates the span of a DBS contact and could affect the placement of directional contacts within the STN. CONCLUSIONS MER might continue to have a role in STN-DBS. This could potentially be mitigated by further refinement of imaging protocols to better image the ventral boundary of the STN.
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Affiliation(s)
- Hailey C Budnick
- Department of Neurological Surgery, Indiana University, Indianapolis, Indiana, USA
| | - Dylan Schneider
- Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - S Elizabeth Zauber
- Indiana University School of Medicine, Indianapolis, Indiana, USA; Department of Neurology, Indiana University, Indianapolis, Indiana, USA
| | - Thomas C Witt
- Department of Neurological Surgery, Indiana University, Indianapolis, Indiana, USA; Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Kunal Gupta
- Department of Neurological Surgery, Indiana University, Indianapolis, Indiana, USA; Indiana University School of Medicine, Indianapolis, Indiana, USA; Stark Neurosciences Research Institute, Indiana University, Indianapolis, Indiana, USA; Department of Anatomy, Cell Biology & Physiology, Indiana University, Indianapolis, Indiana, USA; Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA.
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Rajabian A, Vinke S, Candelario-Mckeown J, Milabo C, Salazar M, Nizam AK, Salloum N, Hyam J, Akram H, Joyce E, Foltynie T, Limousin P, Hariz M, Zrinzo L. Accuracy, precision, and safety of stereotactic, frame-based, intraoperative MRI-guided and MRI-verified deep brain stimulation in 650 consecutive procedures. J Neurosurg 2023; 138:1702-1711. [PMID: 36308483 DOI: 10.3171/2022.8.jns22968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 08/30/2022] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Suboptimal lead placement is one of the most common indications for deep brain stimulation (DBS) revision procedures. Confirming lead placement in relation to the visible anatomical target with dedicated stereotactic imaging before terminating the procedure can mitigate this risk. In this study, the authors examined the accuracy, precision, and safety of intraoperative MRI (iMRI) to both guide and verify lead placement during frame-based stereotactic surgery. METHODS A retrospective analysis of 650 consecutive DBS procedures for targeting accuracy, precision, and perioperative complications was performed. Frame-based lead placement took place in an operating room equipped with an MRI machine using stereotactic images to verify lead placement before removing the stereotactic frame. Immediate lead relocation was performed when necessary. Systematic analysis of the targeting error was calculated. RESULTS Verification of 1201 DBS leads with stereotactic MRI was performed in 643 procedures and with stereotactic CT in 7. The mean ± SD of the final targeting error was 0.9 ± 0.3 mm (range 0.1-2.3 mm). Anatomically acceptable lead placement was achieved with a single brain pass for 97% (n = 1164) of leads; immediate intraoperative relocation was performed in 37 leads (3%) to obtain satisfactory anatomical placement. General anesthesia was used in 91% (n = 593) of the procedures. Hemorrhage was noted after 4 procedures (0.6%); 3 patients (0.4% of procedures) presented with transient neurological symptoms, and 1 experienced delayed cognitive decline. Two bleeds coincided with immediate relocation (2 of 37 leads, 5.4%), which contrasts with hemorrhage in 2 (0.2%) of 1164 leads implanted on the first pass (p = 0.0058). Three patients had transient seizures in the postoperative period. The seizures coincided with hemorrhage in 2 of these patients and with immediate lead relocation in the other. There were 21 infections (3.2% of procedures, 1.5% in 3 months) leading to hardware removal. Delayed (> 3 months) retargeting of 6 leads (0.5%) in 4 patients (0.6% of procedures) was performed because of suboptimal stimulation benefit. There were no MRI-related complications, no permanent motor deficits, and no deaths. CONCLUSIONS To the authors' knowledge, this is the largest series reporting the use of iMRI to guide and verify lead location during DBS surgery. It demonstrates a high level of accuracy, precision, and safety. Significantly higher hemorrhage was encountered when multiple brain passes were required for lead implantation, although none led to permanent deficit. Meticulous audit and calibration can improve precision and maximize safety.
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Affiliation(s)
- Ali Rajabian
- 1Department of Clinical and Movement Neurosciences, Functional Neurosurgery Unit, University College London, Institute of Neurology, Queen Square, London, United Kingdom
- 2Victor Horsley Department of Neurosurgery, National Hospital for Neurology and Neurosurgery, Queen Square, London, United Kingdom; and
| | - Saman Vinke
- 1Department of Clinical and Movement Neurosciences, Functional Neurosurgery Unit, University College London, Institute of Neurology, Queen Square, London, United Kingdom
| | - Joseph Candelario-Mckeown
- 1Department of Clinical and Movement Neurosciences, Functional Neurosurgery Unit, University College London, Institute of Neurology, Queen Square, London, United Kingdom
| | - Catherine Milabo
- 1Department of Clinical and Movement Neurosciences, Functional Neurosurgery Unit, University College London, Institute of Neurology, Queen Square, London, United Kingdom
| | - Maricel Salazar
- 1Department of Clinical and Movement Neurosciences, Functional Neurosurgery Unit, University College London, Institute of Neurology, Queen Square, London, United Kingdom
| | - Abdul Karim Nizam
- 1Department of Clinical and Movement Neurosciences, Functional Neurosurgery Unit, University College London, Institute of Neurology, Queen Square, London, United Kingdom
| | - Nadia Salloum
- 1Department of Clinical and Movement Neurosciences, Functional Neurosurgery Unit, University College London, Institute of Neurology, Queen Square, London, United Kingdom
| | - Jonathan Hyam
- 1Department of Clinical and Movement Neurosciences, Functional Neurosurgery Unit, University College London, Institute of Neurology, Queen Square, London, United Kingdom
- 2Victor Horsley Department of Neurosurgery, National Hospital for Neurology and Neurosurgery, Queen Square, London, United Kingdom; and
| | - Harith Akram
- 1Department of Clinical and Movement Neurosciences, Functional Neurosurgery Unit, University College London, Institute of Neurology, Queen Square, London, United Kingdom
- 2Victor Horsley Department of Neurosurgery, National Hospital for Neurology and Neurosurgery, Queen Square, London, United Kingdom; and
| | - Eileen Joyce
- 1Department of Clinical and Movement Neurosciences, Functional Neurosurgery Unit, University College London, Institute of Neurology, Queen Square, London, United Kingdom
| | - Thomas Foltynie
- 1Department of Clinical and Movement Neurosciences, Functional Neurosurgery Unit, University College London, Institute of Neurology, Queen Square, London, United Kingdom
| | - Patricia Limousin
- 1Department of Clinical and Movement Neurosciences, Functional Neurosurgery Unit, University College London, Institute of Neurology, Queen Square, London, United Kingdom
| | - Marwan Hariz
- 1Department of Clinical and Movement Neurosciences, Functional Neurosurgery Unit, University College London, Institute of Neurology, Queen Square, London, United Kingdom
- 3Department of Clinical Neuroscience, Umeå University, Umeå, Sweden
| | - Ludvic Zrinzo
- 1Department of Clinical and Movement Neurosciences, Functional Neurosurgery Unit, University College London, Institute of Neurology, Queen Square, London, United Kingdom
- 2Victor Horsley Department of Neurosurgery, National Hospital for Neurology and Neurosurgery, Queen Square, London, United Kingdom; and
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Ping A, Pan L, Zhang J, Xu K, Schriver KE, Zhu J, Roe AW. Targeted Optical Neural Stimulation: A New Era for Personalized Medicine. Neuroscientist 2023; 29:202-220. [PMID: 34865559 DOI: 10.1177/10738584211057047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Targeted optical neural stimulation comprises infrared neural stimulation and optogenetics, which affect the nervous system through induced thermal transients and activation of light-sensitive proteins, respectively. The main advantage of this pair of optical tools is high functional selectivity, which conventional electrical stimulation lacks. Over the past 15 years, the mechanism, safety, and feasibility of optical stimulation techniques have undergone continuous investigation and development. When combined with other methods like optical imaging and high-field functional magnetic resonance imaging, the translation of optical stimulation to clinical practice adds high value. We review the theoretical foundations and current state of optical stimulation, with a particular focus on infrared neural stimulation as a potential bridge linking optical stimulation to personalized medicine.
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Affiliation(s)
- An Ping
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Li Pan
- Qiushi Academy for Advanced Studies (QAAS), Key Laboratory of Biomedical Engineering of Education Ministry & Zhejiang Provincial Key Laboratory of Cardio-Cerebral Vascular Detection Technology and Medicinal Effectiveness Appraisal, Zhejiang University, Hangzhou, Zhejiang, China
| | - Jianmin Zhang
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Kedi Xu
- Qiushi Academy for Advanced Studies (QAAS), Key Laboratory of Biomedical Engineering of Education Ministry & Zhejiang Provincial Key Laboratory of Cardio-Cerebral Vascular Detection Technology and Medicinal Effectiveness Appraisal, Zhejiang University, Hangzhou, Zhejiang, China.,Zhejiang Lab, Hangzhou, Zhejiang, China
| | - Kenneth E Schriver
- Zhejiang University Interdisciplinary Institute of Neuroscience and Technology (ZIINT), School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Junming Zhu
- Department of Neurosurgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Anna Wang Roe
- Zhejiang University Interdisciplinary Institute of Neuroscience and Technology (ZIINT), School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou, Zhejiang, China
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Bilateral deep brain stimulation of the subthalamic nucleus: Targeting differences between the first and second side. NEUROCIRUGIA (ENGLISH EDITION) 2023:S2529-8496(22)00100-9. [PMID: 36775743 DOI: 10.1016/j.neucie.2022.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 07/18/2022] [Indexed: 02/12/2023]
Abstract
INTRODUCTION AND OBJECTIVES Deep brain stimulation (DBS) of the subthalamic nucleus (STN) is a recognized treatment for drug-refractory Parkinson's disease (PD). However, the therapeutic success depends on the accuracy of targeting. This study aimed to evaluate potential accuracy differences in the placement of the first and second electrodes implanted, by comparing chosen electrode trajectories, STN activity detected during microelectrode recording (MER), and the mismatch between the initially planned and final electrode positions on each side. MATERIALS AND METHODS In this retrospective cohort study, we analyzed data from 30 patients who underwent one-stage bilateral DBS. For most patients, three arrays of microelectrodes were used to determine the physiological location of the STN. Final target location depended also on the results of intraoperative stimulation. The choice of central versus non-central channels was compared. The Euclidean vector deviation was calculated using the initially planned coordinates and the final position of the tip of the electrode according to a CT scan taken at least a month after the surgery. RESULTS The central channel was chosen in 70% of cases on the first side and 40% of cases on the second side. The mean length of high-quality STN activity recorded in the central channel was longer on the first side than the second (3.07±1.85mm vs. 2.75±1.94mm), while in the anterior channel there were better MER recordings on the second side (1.59±2.07mm on the first side vs. 2.78±2.14mm on the second). Regarding the mismatch between planned versus final electrode position, electrodes on the first side were placed on average 0.178±0.917mm lateral, 0.126±1.10mm posterior and 1.48±1.64mm inferior to the planned target, while the electrodes placed on the second side were 0.251±1.08mm medial, 0.355±1.29mm anterior and 2.26±1.47mm inferior to the planned target. CONCLUSION There was a tendency for the anterior trajectory to be chosen more frequently than the central on the second side. There was also a statistically significant deviation of the second electrodes in the anterior and inferior directions, when compared to the electrodes on the first side, suggesting that another cause other than brain shift may be responsible. We should therefore factor this during planning for the second implanted side. It might be useful to plan the second side more anteriorly, possibly reducing the number of MER trajectories tested and the duration of surgery.
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Zhao GR, Cheng YF, Feng KK, Wang M, Wang YG, Wu YZ, Yin SY. Clinical Study of Intraoperative Microelectrode Recordings during Awake and Asleep Subthalamic Nucleus Deep Brain Stimulation for Parkinson's Disease: A Retrospective Cohort Study. Brain Sci 2022; 12:brainsci12111469. [PMID: 36358395 PMCID: PMC9688350 DOI: 10.3390/brainsci12111469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/16/2022] [Accepted: 10/27/2022] [Indexed: 11/16/2022] Open
Abstract
Our objective is to analyze the difference of microelectrode recording (MER) during awake and asleep subthalamic nucleus deep brain stimulation (STN-DBS) for Parkinson’s disease (PD) and the necessity of MER during “Asleep DBS” under general anesthesia (GA). The differences in MER, target accuracy, and prognosis under different anesthesia methods were analyzed. Additionally, the MER length was compared with the postoperative electrode length by electrode reconstruction and measurement. The MER length of two groups was 5.48 ± 1.39 mm in the local anesthesia (LA) group and 4.38 ± 1.43 mm in the GA group, with a statistical significance between the two groups (p < 0.01). The MER length of the LA group was longer than its postoperative electrode length (p < 0.01), however, there was no significant difference between the MER length and postoperative electrode length in the GA group (p = 0.61). There were also no significant differences in the postoperative electrode length, target accuracy, and postoperative primary and secondary outcome scores between the two groups (p > 0.05). These results demonstrate that “Asleep DBS” under GA is comparable to “Awake DBS” under LA. GA has influences on MER during surgery, but typical STN discharges can still be recorded. MER is not an unnecessary surgical procedure.
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Affiliation(s)
- Guang-Rui Zhao
- Clinical College of Neurology, Neurosurgery and Neurorehabilitation, Tianjin Medical University, Tianjin 300070, China
- Department of Neurosurgery, Lu’an Hospital Affiliated to Anhui Medical University, Lu’an 237000, China
| | - Yi-Feng Cheng
- Department of Functional Neurosurgery, Huanhu Hospital, Tianjin University, Tianjin 300350, China
| | - Ke-Ke Feng
- Department of Functional Neurosurgery, Huanhu Hospital, Tianjin University, Tianjin 300350, China
| | - Min Wang
- Department of Neurology, Huanhu Hospital, Tianjin University, Tianjin 300350, China
| | - Yan-Gang Wang
- Clinical College of Neurology, Neurosurgery and Neurorehabilitation, Tianjin Medical University, Tianjin 300070, China
| | - Yu-Zhang Wu
- Clinical College of Neurology, Neurosurgery and Neurorehabilitation, Tianjin Medical University, Tianjin 300070, China
| | - Shao-Ya Yin
- Department of Functional Neurosurgery, Huanhu Hospital, Tianjin University, Tianjin 300350, China
- Correspondence:
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de Oliveira F, Vaz R, Chamadoira C, Rosas MJ, Ferreira-Pinto MJ. Bilateral deep brain stimulation of the subthalamic nucleus: Targeting differences between the first and second side. Neurocirugia (Astur) 2022. [DOI: 10.1016/j.neucir.2022.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Lu Y, Chang L, Li J, Luo B, Dong W, Qiu C, Zhang W, Ruan Y. The Effects of Different Anesthesia Methods on the Treatment of Parkinson’s Disease by Bilateral Deep Brain Stimulation of the Subthalamic Nucleus. Front Neurosci 2022; 16:917752. [PMID: 35692425 PMCID: PMC9178204 DOI: 10.3389/fnins.2022.917752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 04/26/2022] [Indexed: 11/21/2022] Open
Abstract
Background Subthalamic nucleus deep brain stimulation (STN–DBS) surgery for Parkinson’s disease (PD) is routinely performed at medical centers worldwide. However, it is debated whether general anesthesia (GA) or traditional local anesthetic (LA) is superior. Purpose This study aims to compare the effects of LA and GA operation methods on clinical improvement in patients with PD, such as motor and non-motor symptoms, after STN–DBS surgery at our center. Method A total of 157 patients with PD were retrospectively identified as having undergone surgery under LA (n = 81) or GA (n = 76) states. In this study, the Unified Parkinson’s Disease Rating Scale Motor Score (UPDRS-III) in three states, levodopa-equivalent-daily-dose (LEDD), surgical duration, intraoperative microelectrode recording (iMER) signal length, postoperative intracranial volume, electrode implantation error, neuropsychological function, quality of life scores, and complication rates were collected and compared. All patients with PD were routinely followed up at 6, 12, 18, and 24 months postoperatively. Result Overall improvement in UPDRS-III was demonstrated at postoperative follow-up, and there was no significant difference between the two groups in medication-off, stimulation-off state and medication-off, stimulation-on state. However, UPDRS-III scores in medication-on, stimulation-on state under GA was significantly lower than that in the LA group. During postoperative follow-up, LEDD in the LA group (6, 12, 18, and 24 months, postoperatively) was significantly lower than in the GA group. However, there were no significant differences at baseline or 1-month between the two groups. The GA group had a shorter surgical duration, lower intracranial volume, and longer iMER signal length than the LA group. However, there was no significant group difference in electrode implantation accuracy and complication rates. Additionally, the Hamilton Anxiety Scale (HAMA) was significantly lower in the GA group than the LA group at 1-month follow-up, but this difference disappeared at longer follow-up. Besides, there was no significant group difference in the 39-item Parkinson’s Disease Questionnaire (PDQ-39) scale scores. Conclusion Although both groups showed overall motor function improvement without a significant postoperative difference, the GA group seemed superior in surgical duration, intracranial volume, and iMER signal length. As the accuracy of electrode implantation can be ensured by iMER monitoring, DBS with GA will become more widely accepted.
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Affiliation(s)
- Yue Lu
- Department of Functional Neurosurgery, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China
| | - Lei Chang
- Department of Functional Neurosurgery, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China
| | - Jinwen Li
- Department of Anesthesiology, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China
| | - Bei Luo
- Department of Functional Neurosurgery, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China
| | - Wenwen Dong
- Department of Functional Neurosurgery, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China
| | - Chang Qiu
- Department of Functional Neurosurgery, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China
| | - Wenbin Zhang
- Department of Functional Neurosurgery, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China
- *Correspondence: Wenbin Zhang,
| | - Yifeng Ruan
- Department of Anesthesiology, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China
- Yifeng Ruan,
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Geraedts VJ, van Ham RAP, van Hilten JJ, Mosch A, Hoffmann CFE, van der Gaag NA, Contarino MF. Intraoperative vs. Postoperative Side-Effects-Thresholds During Pallidal and Thalamic DBS. Front Neurol 2022; 12:775784. [PMID: 35002928 PMCID: PMC8740141 DOI: 10.3389/fneur.2021.775784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 11/26/2021] [Indexed: 11/13/2022] Open
Abstract
Background: It is currently unknown whether results from intraoperative test stimulation of two types of Deep Brain Stimulation (DBS), either during awake pallidal (GPi) or thalamic (Vim), are comparable to the results generated by chronic stimulation through the definitive lead. Objective: To determine whether side-effects-thresholds from intraoperative test stimulation are indicative of postoperative stimulation findings. Methods: Records of consecutive patients who received GPi or Vim were analyzed. Thresholds for the induction of either capsular or non-capsular side-effects were compared at matched depths and at group-level. Results: Records of fifty-two patients were analyzed (20 GPis, 75 Vims). The induction of side-effects was not significantly different between intraoperative and postoperative assessments at matched depths, although a large variability was observed (capsular: GPi DBS: p = 0.79; Vim DBS: p = 0.68); non-capsular: GPi DBS: p = 0.20; and Vim DBS: p = 0.35). Linear mixed-effect models revealed no differences between intraoperative and postoperative assessments, although the Vim had significantly lower thresholds (capsular side-effects p = 0.01, non-capsular side-effects p < 0.01). Unpaired survival analyses demonstrated lower intraoperative than postoperative thresholds for capsular side-effects in patients under GPi DBS (p = 0.01), while higher intraoperative thresholds for non-capsular side-effects in patients under Vim DBS (p = 0.01). Conclusion: There were no significant differences between intraoperative and postoperative assessments of GPi and Vim DBS, although thresholds cannot be directly extrapolated at an individual level due to high variability.
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Affiliation(s)
- Victor J Geraedts
- Department of Neurology, Leiden University Medical Center (LUMC), Leiden, Netherlands.,Department of Clinical Epidemiology, Leiden University Medical Center (LUMC), Leiden, Netherlands
| | - Rogier A P van Ham
- Department of Neurology, Leiden University Medical Center (LUMC), Leiden, Netherlands
| | - Jacobus J van Hilten
- Department of Neurology, Leiden University Medical Center (LUMC), Leiden, Netherlands
| | - Arne Mosch
- Department of Neurology, Haga Teaching Hospital, The Hague, Netherlands
| | - Carel F E Hoffmann
- Department of Neurosurgery, Haga Teaching Hospital, The Hague, Netherlands
| | - Niels A van der Gaag
- Department of Neurosurgery, Haga Teaching Hospital, The Hague, Netherlands.,Department of Neurosurgery, Leiden University Medical Center (LUMC), Leiden, Netherlands
| | - Maria Fiorella Contarino
- Department of Neurology, Leiden University Medical Center (LUMC), Leiden, Netherlands.,Department of Neurology, Haga Teaching Hospital, The Hague, Netherlands
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Vinke RS, Selvaraj AK, Geerlings M, Georgiev D, Sadikov A, Kubben PL, Doorduin J, Praamstra P, Bloem BR, Bartels RH, Esselink RA. The Role of Microelectrode Recording and Stereotactic Computed Tomography in Verifying Lead Placement During Awake MRI-Guided Subthalamic Nucleus Deep Brain Stimulation for Parkinson's Disease. JOURNAL OF PARKINSON'S DISEASE 2022; 12:1269-1278. [PMID: 35367970 PMCID: PMC9198756 DOI: 10.3233/jpd-223149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 03/09/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Bilateral deep brain stimulation of the subthalamic nucleus (STN-DBS) has become a cornerstone in the advanced treatment of Parkinson's disease (PD). Despite its well-established clinical benefit, there is a significant variation in the way surgery is performed. Most centers operate with the patient awake to allow for microelectrode recording (MER) and intraoperative clinical testing. However, technical advances in MR imaging and MRI-guided surgery raise the question whether MER and intraoperative clinical testing still have added value in DBS-surgery. OBJECTIVE To evaluate the added value of MER and intraoperative clinical testing to determine final lead position in awake MRI-guided and stereotactic CT-verified STN-DBS surgery for PD. METHODS 29 consecutive patients were analyzed retrospectively. Patients underwent awake bilateral STN-DBS with MER and intraoperative clinical testing. The role of MER and clinical testing in determining final lead position was evaluated. Furthermore, interobserver variability in determining the MRI-defined STN along the planned trajectory was investigated. Clinical improvement was evaluated at 12 months follow-up and adverse events were recorded. RESULTS 98% of final leads were placed in the central MER-track with an accuracy of 0.88±0.45 mm. Interobserver variability of the MRI-defined STN was 0.84±0.09. Compared to baseline, mean improvement in MDS-UPDRS-III, PDQ-39 and LEDD were 26.7±16.0 points (54%) (p < 0.001), 9.0±20.0 points (19%) (p = 0.025), and 794±434 mg/day (59%) (p < 0.001) respectively. There were 19 adverse events in 11 patients, one of which (lead malposition requiring immediate postoperative revision) was a serious adverse event. CONCLUSION MER and intraoperative clinical testing had no additional value in determining final lead position. These results changed our daily clinical practice to an asleep MRI-guided and stereotactic CT-verified approach.
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Affiliation(s)
- R. Saman Vinke
- Donders Institute for Brain, Cognition and Behaviour, Department of Neurosurgery, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Ashok K. Selvaraj
- Donders Institute for Brain, Cognition and Behaviour, Department of Neurosurgery, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Martin Geerlings
- Donders Institute for Brain, Cognition and Behaviour, Department of Neurosurgery, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Dejan Georgiev
- Department of Neurology, University Medical Center Ljubljana, Ljubljana, Slovenia
- Faculty of Computer and Information Science, University of Ljubljana, Ljubljana, Slovenia
| | - Aleksander Sadikov
- Faculty of Computer and Information Science, University of Ljubljana, Ljubljana, Slovenia
| | - Pieter L. Kubben
- Department of Neurosurgery, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Jonne Doorduin
- Donders Institute for Brain, Cognition and Behaviour, Department of Neurology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Peter Praamstra
- Donders Institute for Brain, Cognition and Behaviour, Department of Neurology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Bastiaan R. Bloem
- Donders Institute for Brain, Cognition and Behaviour, Department of Neurology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Ronald H.M.A. Bartels
- Donders Institute for Brain, Cognition and Behaviour, Department of Neurosurgery, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Rianne A.J. Esselink
- Donders Institute for Brain, Cognition and Behaviour, Department of Neurology, Radboud University Medical Center, Nijmegen, The Netherlands
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11
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Verhagen Metman L, Slavin KV, Rosenow JM, Vitek JL, van den Munckhof P. More Than Just the Level of Consciousness: Comparing Asleep and Awake Deep Brain Stimulation. Mov Disord 2021; 36:2763-2766. [PMID: 34585783 DOI: 10.1002/mds.28806] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 08/27/2021] [Accepted: 09/11/2021] [Indexed: 02/01/2023] Open
Affiliation(s)
- Leo Verhagen Metman
- Department of Neurological Sciences, Rush University, Chicago, Illinois, USA
| | - Konstantin V Slavin
- Department of Neurosurgery, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Joshua M Rosenow
- Departments of Neurosurgery, Neurology, and Physical Medicine and Rehabilitation, Northwestern University, Chicago, Illinois, USA
| | - Jerrold L Vitek
- Department of Neurology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Pepijn van den Munckhof
- Department of Neurosurgery, Amsterdam University Medical Centers, Amsterdam, North Holland, USA
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12
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Bos MJ, de Korte-de Boer D, Alzate Sanchez AM, Duits A, Ackermans L, Temel Y, Absalom AR, Buhre WF, Roberts MJ, Janssen MLF. Impact of Procedural Sedation on the Clinical Outcome of Microelectrode Recording Guided Deep Brain Stimulation in Patients with Parkinson's Disease. J Clin Med 2021; 10:1557. [PMID: 33917205 PMCID: PMC8068017 DOI: 10.3390/jcm10081557] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/01/2021] [Accepted: 04/05/2021] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Subthalamic nucleus (STN) deep brain stimulation (DBS) has become a routine treatment of advanced Parkinson's disease (PD). DBS surgery is commonly performed under local anesthesia (LA) to obtain reliable microelectrode recordings. However, procedural sedation and/or analgesia (PSA) is often desirable to improve patient comfort. The impact of PSA in addition to LA on outcome is largely unknown. Therefore, we performed an observational study to assess the effect of PSA compared to LA alone during STN DBS surgery on outcome in PD patients. METHODS Seventy PD patients (22 under LA, 48 under LA + PSA) scheduled for STN DBS implantation were included. Dexmedetomidine, clonidine or remifentanil were used for PSA. The primary outcome was the change in Movement Disorders Society Unified Parkinson's Disease Rating Score III (MDS-UPDRS III) and levodopa equivalent daily dosage (LEDD) between baseline, one month before surgery, and twelve months postoperatively. Secondary outcome measures were motor function during activities of daily living (MDS-UPDRS II), cognitive alterations and surgical adverse events. Postoperative assessment was conducted in "on" stimulation and "on" medication conditions. RESULTS At twelve months follow-up, UPDRS III and UPDRS II scores in "on" medication conditions were similar between the LA and PSA groups. The two groups showed a similar LEDD reduction and an equivalent decline in executive function measured by the Stroop Color-Word Test, Trail Making Test-B, and verbal fluency. The incidence of perioperative and postoperative adverse events was similar between groups. CONCLUSION This study demonstrates that PSA during STN DBS implantation surgery in PD patients was not associated with differences in motor and non-motor outcome after twelve months compared with LA only.
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Affiliation(s)
- Michael J. Bos
- Department of Anesthesiology and Pain Medicine, Maastricht University Medical Center, P. Debyelaan 25, 6229 HX Maastricht, The Netherlands; (D.d.K.-d.B.); (W.F.B.)
- Faculty of Health, Medicine and Life Sciences, School for Mental Health and Neuroscience, Maastricht University, Universiteitssingel 40, 6229 ER Maastricht, The Netherlands; (A.M.A.S.); (A.D.); (Y.T.); (M.L.F.J.)
| | - Dianne de Korte-de Boer
- Department of Anesthesiology and Pain Medicine, Maastricht University Medical Center, P. Debyelaan 25, 6229 HX Maastricht, The Netherlands; (D.d.K.-d.B.); (W.F.B.)
| | - Ana Maria Alzate Sanchez
- Faculty of Health, Medicine and Life Sciences, School for Mental Health and Neuroscience, Maastricht University, Universiteitssingel 40, 6229 ER Maastricht, The Netherlands; (A.M.A.S.); (A.D.); (Y.T.); (M.L.F.J.)
| | - Annelien Duits
- Faculty of Health, Medicine and Life Sciences, School for Mental Health and Neuroscience, Maastricht University, Universiteitssingel 40, 6229 ER Maastricht, The Netherlands; (A.M.A.S.); (A.D.); (Y.T.); (M.L.F.J.)
- Department of Medical Psychology, Maastricht University Medical Center, P. Debyelaan 25, 6229 HX Maastricht, The Netherlands
| | - Linda Ackermans
- Department of Neurosurgery, Maastricht University Medical Center, P. Debyelaan 25, 6229 HX Maastricht, The Netherlands;
| | - Yasin Temel
- Faculty of Health, Medicine and Life Sciences, School for Mental Health and Neuroscience, Maastricht University, Universiteitssingel 40, 6229 ER Maastricht, The Netherlands; (A.M.A.S.); (A.D.); (Y.T.); (M.L.F.J.)
- Department of Neurosurgery, Maastricht University Medical Center, P. Debyelaan 25, 6229 HX Maastricht, The Netherlands;
| | - Anthony R. Absalom
- Department of Anesthesiology, University Medical Center Groningen, Groningen University, Hanzeplein 1, 9713 GZ Groningen, The Netherlands;
| | - Wolfgang F. Buhre
- Department of Anesthesiology and Pain Medicine, Maastricht University Medical Center, P. Debyelaan 25, 6229 HX Maastricht, The Netherlands; (D.d.K.-d.B.); (W.F.B.)
- Faculty of Health, Medicine and Life Sciences, School for Mental Health and Neuroscience, Maastricht University, Universiteitssingel 40, 6229 ER Maastricht, The Netherlands; (A.M.A.S.); (A.D.); (Y.T.); (M.L.F.J.)
| | - Mark J. Roberts
- Faculty of Psychology and Neuroscience, Maastricht University, Universiteitssingel 40, 6229 ER Maastricht, The Netherlands;
| | - Marcus L. F. Janssen
- Faculty of Health, Medicine and Life Sciences, School for Mental Health and Neuroscience, Maastricht University, Universiteitssingel 40, 6229 ER Maastricht, The Netherlands; (A.M.A.S.); (A.D.); (Y.T.); (M.L.F.J.)
- Department of Clinical Neurophysiology, Maastricht University Medical Center, P. Debyelaan 25, 6229 HX Maastricht, The Netherlands
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13
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van den Munckhof P, Bot M, Schuurman PR. Targeting of the Subthalamic Nucleus in Patients with Parkinson's Disease Undergoing Deep Brain Stimulation Surgery. Neurol Ther 2021; 10:61-73. [PMID: 33565018 PMCID: PMC8140007 DOI: 10.1007/s40120-021-00233-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 01/20/2021] [Indexed: 11/29/2022] Open
Abstract
Precise stereotactic targeting of the dorsolateral motor part of the subthalamic nucleus (STN) is paramount for maximizing clinical effectiveness and preventing side effects of deep brain stimulation (DBS) in patients with advanced Parkinson's disease. With recent developments in magnetic resonance imaging (MRI) techniques, direct targeting of the dorsolateral part of the STN is now feasible, together with visualization of the motor fibers in the nearby internal capsule. However, clinically relevant discrepancies were reported when comparing STN borders on MRI to electrophysiological STN borders during microelectrode recordings (MER). Also, one should take into account the possibility of a 3D inaccuracy of up to 2 mm of the applied stereotactic technique. Pneumocephalus and image fusion errors may further increase implantation inaccuracy. Even when implantation has been successful, suboptimal lead anchoring on the skull may cause lead migration during follow-up. Meticulous pre- and intraoperative imaging is therefore indispensable, and so is postoperative imaging when the effects of DBS deteriorate during follow-up. Thus far, most DBS centers employ MRI targeting, multichannel MER, and awake test stimulation in STN surgery, but randomized trials comparing surgery under local versus general anesthesia and additional studies comparing MER-STN borders to high-field MRI-STN may change this clinical practice. Further developments in imaging protocols and improvements in image fusion processes are needed to optimize placement of DBS leads in the dorsolateral motor part of the STN in Parkinson's disease.
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Affiliation(s)
- Pepijn van den Munckhof
- Department of Neurosurgery, Amsterdam University Medical Centers, Academic Medical Center (AMC), Amsterdam, The Netherlands.
| | - Maarten Bot
- Department of Neurosurgery, Amsterdam University Medical Centers, Academic Medical Center (AMC), Amsterdam, The Netherlands
| | - P Richard Schuurman
- Department of Neurosurgery, Amsterdam University Medical Centers, Academic Medical Center (AMC), Amsterdam, The Netherlands
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14
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Lange F, Steigerwald F, Engel D, Malzacher T, Neun T, Fricke P, Volkmann J, Matthies C, Capetian P. Longitudinal Assessment of Rotation Angles after Implantation of Directional Deep Brain Stimulation Leads. Stereotact Funct Neurosurg 2020; 99:150-158. [PMID: 32998131 DOI: 10.1159/000511202] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 08/24/2020] [Indexed: 11/19/2022]
Abstract
PURPOSE The risk/benefit-ratio of deep brain stimulation (DBS) depends on focusing the electrical field onto the target volume, excluding side-effect eliciting structures. Directional leads limiting radial current diffusion can target stimulation but add a spatial degree of freedom that requires control to align multimodal imaging datasets and for anatomical interpretation of stimulation. Unpredictable postoperative lead rotations have been reported. The extent and timing of rotation from the surgically intended alignment remain uncertain, as does the time point at which directional stimulation can be safely initiated without risking unexpected shifts in stimulation volume. We present a retrospective analysis of clinically indicated, repeated neuroimaging controls postimplantation in patients with directional DBS systems, which allow estimation of the amount and timing of postoperative lead rotation. METHODS Data from 67 patients with directional leads and multiple cranial computer tomographies (CCT) and/or rotation fluoroscopies at different postoperative time points were included. Rotation angles were detected based on CCT artifacts (n = 56) or direct visualization of lead segments on rotation fluoroscopies (n = 52). Cross-validation of both methods was conducted in patients who received both imaging modalities (n = 51). RESULTS Rotation angles deviated significantly (∼30°) from their intended 0° anterior/posterior orientation. Rotation was firmly established within the first postoperative day, with no additional torque in subsequent scans. The two methods highly correlated (right hemisphere: R2 = 0.94, left hemisphere: R2 = 0.91). CONCLUSION Both methods for measuring rotation angles led to comparable results and can be used interchangeably. Directional stimulation settings can safely be initiated after the first postoperative day, without risking subsequent lead rotation-related anatomical shifts.
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Affiliation(s)
- Florian Lange
- Department of Neurology, University Hospital Würzburg, Würzburg, Germany
| | - Frank Steigerwald
- Department of Neurology, University Hospital Würzburg, Würzburg, Germany
| | - Doortje Engel
- Department of Neuroradiology, University Hospital Würzburg, Würzburg, Germany
| | - Tobias Malzacher
- Department of Neurology, University Hospital Würzburg, Würzburg, Germany
| | - Tilmann Neun
- Department of Neuroradiology, University Hospital Würzburg, Würzburg, Germany
| | - Patrick Fricke
- Department of Neurosurgery, University Hospital Würzburg, Würzburg, Germany
| | - Jens Volkmann
- Department of Neurology, University Hospital Würzburg, Würzburg, Germany
| | - Cordula Matthies
- Department of Neurosurgery, University Hospital Würzburg, Würzburg, Germany
| | - Philipp Capetian
- Department of Neurology, University Hospital Würzburg, Würzburg, Germany,
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15
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Isaacs BR, Keuken MC, Alkemade A, Temel Y, Bazin PL, Forstmann BU. Methodological Considerations for Neuroimaging in Deep Brain Stimulation of the Subthalamic Nucleus in Parkinson's Disease Patients. J Clin Med 2020; 9:E3124. [PMID: 32992558 PMCID: PMC7600568 DOI: 10.3390/jcm9103124] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 09/17/2020] [Accepted: 09/25/2020] [Indexed: 12/17/2022] Open
Abstract
Deep brain stimulation (DBS) of the subthalamic nucleus is a neurosurgical intervention for Parkinson's disease patients who no longer appropriately respond to drug treatments. A small fraction of patients will fail to respond to DBS, develop psychiatric and cognitive side-effects, or incur surgery-related complications such as infections and hemorrhagic events. In these cases, DBS may require recalibration, reimplantation, or removal. These negative responses to treatment can partly be attributed to suboptimal pre-operative planning procedures via direct targeting through low-field and low-resolution magnetic resonance imaging (MRI). One solution for increasing the success and efficacy of DBS is to optimize preoperative planning procedures via sophisticated neuroimaging techniques such as high-resolution MRI and higher field strengths to improve visualization of DBS targets and vasculature. We discuss targeting approaches, MRI acquisition, parameters, and post-acquisition analyses. Additionally, we highlight a number of approaches including the use of ultra-high field (UHF) MRI to overcome limitations of standard settings. There is a trade-off between spatial resolution, motion artifacts, and acquisition time, which could potentially be dissolved through the use of UHF-MRI. Image registration, correction, and post-processing techniques may require combined expertise of traditional radiologists, clinicians, and fundamental researchers. The optimization of pre-operative planning with MRI can therefore be best achieved through direct collaboration between researchers and clinicians.
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Affiliation(s)
- Bethany R. Isaacs
- Integrative Model-based Cognitive Neuroscience Research Unit, University of Amsterdam, 1018 WS Amsterdam, The Netherlands; (A.A.); (P.-L.B.); (B.U.F.)
- Department of Experimental Neurosurgery, Maastricht University Medical Center, 6202 AZ Maastricht, The Netherlands;
| | - Max C. Keuken
- Municipality of Amsterdam, Services & Data, Cluster Social, 1000 AE Amsterdam, The Netherlands;
| | - Anneke Alkemade
- Integrative Model-based Cognitive Neuroscience Research Unit, University of Amsterdam, 1018 WS Amsterdam, The Netherlands; (A.A.); (P.-L.B.); (B.U.F.)
| | - Yasin Temel
- Department of Experimental Neurosurgery, Maastricht University Medical Center, 6202 AZ Maastricht, The Netherlands;
| | - Pierre-Louis Bazin
- Integrative Model-based Cognitive Neuroscience Research Unit, University of Amsterdam, 1018 WS Amsterdam, The Netherlands; (A.A.); (P.-L.B.); (B.U.F.)
- Max Planck Institute for Human Cognitive and Brain Sciences, D-04103 Leipzig, Germany
| | - Birte U. Forstmann
- Integrative Model-based Cognitive Neuroscience Research Unit, University of Amsterdam, 1018 WS Amsterdam, The Netherlands; (A.A.); (P.-L.B.); (B.U.F.)
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