1
|
Navarro de Lara LI, Stockmann JP, Meng Q, Keil B, Mareyam A, Uluç I, Daneshzand M, Makarov S, Wald LL, Nummenmaa A. A novel whole-head RF coil design tailored for concurrent multichannel brain stimulation and imaging at 3T. Brain Stimul 2023; 16:1021-1031. [PMID: 37307872 PMCID: PMC10499022 DOI: 10.1016/j.brs.2023.05.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 04/27/2023] [Accepted: 05/30/2023] [Indexed: 06/14/2023] Open
Abstract
PURPOSE Multichannel Transcranial Magnetic Stimulation (mTMS) [1] is a novel non-invasive brain stimulation technique allowing multiple sites to be stimulated simultaneously or sequentially under electronic control without movement of the coils. To enable simultaneous mTMS and MR imaging, we have designed and constructed a whole-head 28-channel receive-only RF coil at 3T. METHODS A helmet-shaped structure was designed considering a specific layout for a mTMS system with holes for positioning the TMS units next to the scalp. Diameter of the TMS units defined the diameter of RF loops. The placement of the preamplifiers was designed to minimize possible interactions and to allow straightforward positioning of the mTMS units around the RF coil. Interactions between TMS-MRI were analyzed for the whole-head system extending the results presented in previous publications [2]. Both SNR- and g-factors maps were obtained to compare the imaging performance of the coil with commercial head coils. RESULTS Sensitivity losses for the RF elements containing TMS units show a well-defined spatial pattern. Simulations indicate that the losses are predominantly caused by eddy currents on the coil wire windings. The average SNR performance of the TMSMR 28-channel coil is about 66% and 86% of the SNR of the 32/20-channel head coil respectively. The g-factor values of the TMSMR 28-channel coil are similar to the 32-channel coil and significantly better than the 20-channel coil. CONCLUSION We present the TMSMR 28-channel coil, a head RF coil array to be integrated with a multichannel 3-axisTMS coil system, a novel tool that will enable causal mapping of human brain function.
Collapse
Affiliation(s)
- Lucia I Navarro de Lara
- Athinoula A. Martinos Center for Biomedical Imaging, Dept. of Radiology, Massachusetts General Hospital, Charlestown, MA, 02129, USA; Harvard Medical School, Boston, MA, 02115, USA.
| | - Jason P Stockmann
- Athinoula A. Martinos Center for Biomedical Imaging, Dept. of Radiology, Massachusetts General Hospital, Charlestown, MA, 02129, USA; Harvard Medical School, Boston, MA, 02115, USA
| | - Qinglei Meng
- Athinoula A. Martinos Center for Biomedical Imaging, Dept. of Radiology, Massachusetts General Hospital, Charlestown, MA, 02129, USA; Harvard Medical School, Boston, MA, 02115, USA
| | - Boris Keil
- Institute of Medical Physics and Radiation Protection, Department of Life Science Engineering, TH Mittelhessen University of Applied Sciences, Giessen, Germany; Department of Diagnostic and Interventional Radiology, University Hospital Marburg, Phillipps University of Marburg, Marburg, Germany
| | - Azma Mareyam
- Athinoula A. Martinos Center for Biomedical Imaging, Dept. of Radiology, Massachusetts General Hospital, Charlestown, MA, 02129, USA
| | - Işıl Uluç
- Athinoula A. Martinos Center for Biomedical Imaging, Dept. of Radiology, Massachusetts General Hospital, Charlestown, MA, 02129, USA; Harvard Medical School, Boston, MA, 02115, USA
| | - Mohammad Daneshzand
- Athinoula A. Martinos Center for Biomedical Imaging, Dept. of Radiology, Massachusetts General Hospital, Charlestown, MA, 02129, USA; Harvard Medical School, Boston, MA, 02115, USA
| | - Sergey Makarov
- Athinoula A. Martinos Center for Biomedical Imaging, Dept. of Radiology, Massachusetts General Hospital, Charlestown, MA, 02129, USA; Harvard Medical School, Boston, MA, 02115, USA; Department of Electrical and Computer Engineering at the Worcester Polytechnic Institute, Worcester, MA, 01609, USA
| | - Lawrence L Wald
- Athinoula A. Martinos Center for Biomedical Imaging, Dept. of Radiology, Massachusetts General Hospital, Charlestown, MA, 02129, USA; Harvard Medical School, Boston, MA, 02115, USA
| | - Aapo Nummenmaa
- Athinoula A. Martinos Center for Biomedical Imaging, Dept. of Radiology, Massachusetts General Hospital, Charlestown, MA, 02129, USA; Harvard Medical School, Boston, MA, 02115, USA
| |
Collapse
|
2
|
Gangadhar BN. Evidence-based integration of yoga in psychiatric practice. Indian J Psychiatry 2023; 65:5-11. [PMID: 36874516 PMCID: PMC9983454 DOI: 10.4103/indianjpsychiatry.indianjpsychiatry_813_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Accepted: 12/17/2022] [Indexed: 01/13/2023] Open
Abstract
Yoga has been put to test in clinical medicine to build evidence. There has been a steep rise in yoga research through 2010, threefold in the next decade. Despite challenges, clinicians have explored yoga intervention in several disorders. The available data have been examined using meta-analysis when there are more studies. Psychiatric disorders treated with yoga have attracted more research. Some examples include depression, schizophrenia, anxiety, obsessive-compulsive disorder (OCD), somatoform pain, addiction, mild cognitive impairment, and elderly and childhood disorders. Current manuscript focuses on highlighting the major steps towards generating evidence that have led to integration of yoga into psychiatry practice. It also discusses various challenges and the way forward.
Collapse
Affiliation(s)
- B N Gangadhar
- Department of Integrative Medicine, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
| |
Collapse
|
3
|
Chithra U, Samantaray S, Kumar V, K R, Maity K, E N, Akhtar KJ, Parlikar R, Bagali KB, Sreeraj VS, Shreekantiah U, Purohith AN, Shenoy S, Praharaj SK, Goyal N, Mehta UM, Venkatasubramanian G, Thirthalli J. Add-on accelerated continuous theta burst stimulation (a-cTBS) over the left temporoparietal junction for the management of persistent auditory hallucinations in schizophrenia: A case series. Brain Stimul 2022; 15:1511-1512. [PMID: 36410627 DOI: 10.1016/j.brs.2022.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 11/04/2022] [Accepted: 11/15/2022] [Indexed: 11/21/2022] Open
Affiliation(s)
- Uppinkudru Chithra
- Department of Psychiatry, National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, 560029, Karnataka State, India
| | - Subham Samantaray
- Central Institute of Psychiatry (CIP), Ranchi, 834006, Jharkhand State, India
| | - Vikas Kumar
- Central Institute of Psychiatry (CIP), Ranchi, 834006, Jharkhand State, India
| | - Rajkumar K
- Department of Psychiatry, National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, 560029, Karnataka State, India
| | - Ketaki Maity
- Department of Psychiatry, National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, 560029, Karnataka State, India
| | - Nathiya E
- Department of Psychiatry, National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, 560029, Karnataka State, India
| | - Khalid Jiya Akhtar
- Central Institute of Psychiatry (CIP), Ranchi, 834006, Jharkhand State, India
| | - Rujuta Parlikar
- Department of Psychiatry, National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, 560029, Karnataka State, India
| | - Kiran Basawaraj Bagali
- Department of Psychiatry, National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, 560029, Karnataka State, India
| | - Vanteemar S Sreeraj
- Department of Psychiatry, National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, 560029, Karnataka State, India.
| | - Umesh Shreekantiah
- Central Institute of Psychiatry (CIP), Ranchi, 834006, Jharkhand State, India
| | - Abhiram Narasimhan Purohith
- Department of Psychiatry, Kasturba Medical College (KMC), Manipal, Manipal Academy of Higher Education (MAHE), Manipal, Udupi, 576104, Karnataka, India
| | - Sonia Shenoy
- Department of Psychiatry, Kasturba Medical College (KMC), Manipal, Manipal Academy of Higher Education (MAHE), Manipal, Udupi, 576104, Karnataka, India
| | - Samir Kumar Praharaj
- Department of Psychiatry, Kasturba Medical College (KMC), Manipal, Manipal Academy of Higher Education (MAHE), Manipal, Udupi, 576104, Karnataka, India
| | - Nishant Goyal
- Central Institute of Psychiatry (CIP), Ranchi, 834006, Jharkhand State, India
| | - Urvakhsh Meherwan Mehta
- Department of Psychiatry, National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, 560029, Karnataka State, India
| | - Ganesan Venkatasubramanian
- Department of Psychiatry, National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, 560029, Karnataka State, India
| | - Jagadisha Thirthalli
- Department of Psychiatry, National Institute of Mental Health and Neurosciences (NIMHANS), Bengaluru, 560029, Karnataka State, India
| |
Collapse
|
4
|
Gonsalvez I, Spagnolo P, Dworetzky B, Baslet G. Neurostimulation for the treatment of functional neurological disorder: A systematic review. Epilepsy Behav Rep 2021; 16:100501. [PMID: 34950864 PMCID: PMC8671519 DOI: 10.1016/j.ebr.2021.100501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/28/2021] [Accepted: 11/04/2021] [Indexed: 01/02/2023] Open
Abstract
Functional Neurological Disorder (FND), also known as conversion disorder, is characterized by neurological symptoms that are incompatible with any known structural disorder and best explained by a biopsychosocial model. Evidence-based treatments for FND are limited, with cognitive behavioral therapy (CBT) and physiotherapy being the most effective interventions [1]. In recent years, functional neuroimaging studies have provided robust evidence of alterations in activity and connectivity in multiple brain networks in FND. This body of evidence suggests that neurocircuitry-based interventions, such as non-invasive brain stimulation techniques (NIBS), may also represent an effective therapeutic option for patients with FND. In this systematic review, we outline the current state of knowledge of NIBS in FND, and discuss limitations and future directions that may help establish the efficacy of NIBS as a therapeutic option for FND.
Collapse
Affiliation(s)
- Irene Gonsalvez
- Department of Psychiatry, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
| | - Primavera Spagnolo
- Mary Horrigan Connors Center for Women's Health & Gender Biology, Department of Psychiatry, Brigham and Women Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Barbara Dworetzky
- Department of Neurology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
| | - Gaston Baslet
- Department of Psychiatry, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
| |
Collapse
|