Use of Neuronavigated Transcranial Magnetic Stimulation and Diffusion Tensor Imaging to Avoid Motor Cortex Complications in Robotic Stereotactic Radiation Therapy Planning

2016 ◽  
Vol 96 (2) ◽  
pp. E659
Author(s):  
J.E. Palmgren ◽  
E. Kallioniemi ◽  
P. Julkunen
Keyword(s):  
Radiation Therapy ◽  
Diffusion Tensor Imaging ◽  
Transcranial Magnetic Stimulation ◽  
Motor Cortex ◽  
Magnetic Stimulation ◽  
Diffusion Tensor ◽  
Stereotactic Radiation Therapy ◽  
Therapy Planning ◽  
Stereotactic Radiation ◽  
And Diffusion

Navigated Transcranial Magnetic Stimulation for “Somatotopic” Tractography of the Corticospinal Tract

2014 ◽  
Vol 10 (4) ◽  
pp. 542-554 ◽  
Author(s):  
Alfredo Conti ◽  
Giovanni Raffa ◽  
Francesca Granata ◽  
Vincenzo Rizzo ◽  
Antonino Germanò ◽  
...  
Keyword(s):  
Diffusion Tensor Imaging ◽  
Transcranial Magnetic Stimulation ◽  
Motor Cortex ◽  
Magnetic Stimulation ◽  
Corticospinal Tract ◽  
Diffusion Tensor ◽  
Standard Technique ◽  
Navigated Transcranial Magnetic Stimulation ◽  
Subcortical Stimulation ◽  
Diffusion Tensor Imaging Tractography

Abstract BACKGROUND: Diffusion tensor imaging tractography provides 3-dimensional reconstruction of principal white matter tracts, but its spatial accuracy has been questioned. Navigated transcranial magnetic stimulation (nTMS) enables somatotopic mapping of the motor cortex. OBJECTIVE: We used motor maps to reconstruct the corticospinal tract (CST) by integrating elements of its somatotopic organization. We analyzed the accuracy of this method compared with a standard technique and verified its reliability with intraoperative subcortical stimulation. METHODS: We prospectively collected data from patients who underwent surgery between January 2012 and October 2013 for lesions involving the CST. nTMS-based diffusion tensor imaging tractography was compared with a standard technique. The reliability and accuracy between the 2 techniques were analyzed by comparing the number of fibers, the concordance in size, and the location of the cortical end of the CST and the motor area. The accuracy of the technique was assessed by using direct subcortical stimulation. RESULTS: Twenty patients were enrolled in the study. nTMS-based tractography provided a detailed somatotopic reconstruction of the CST. This nTMS-based reconstruction resulted in a decreased number of fibers (305.1 ± 231.7 vs 1024 ± 193, P < .001) and a significantly greater overlap between the motor cortex and the cortical end-region of the CST compared with the standard technique (90.5 ± 8.8% vs 58.3 ± 16.6%, P < .001). Direct subcortical stimulation confirmed the CST location and the somatotopic reconstruction in all cases. CONCLUSION: These results suggest that nTMS-based tractography of the CST is more accurate and less operator dependent than the standard technique and provides a reliable anatomic and functional characterization of the motor pathway.

scholarly journals The motor cortex of the sheep: laminar organization, projections and diffusion tensor imaging of the intracranial pyramidal and extrapyramidal tracts

2019 ◽  
Vol 224 (5) ◽  
pp. 1933-1946 ◽  
Author(s):  
Antonella Peruffo ◽  
Livio Corain ◽  
Cristiano Bombardi ◽  
Cinzia Centelleghe ◽  
Enrico Grisan ◽  
...  
Keyword(s):  
Diffusion Tensor Imaging ◽  
Motor Cortex ◽  
Diffusion Tensor ◽  
Laminar Organization ◽  
And Diffusion

scholarly journals Transcranial Magnetic Stimulation and Diffusion Tensor Tractography for Evaluating Ambulation after Stroke

2016 ◽  
Vol 18 (2) ◽  
pp. 220-226 ◽  
Author(s):  
Bo-Ram Kim ◽  
Won-Jin Moon ◽  
Hyuntae Kim ◽  
Eunhwa Jung ◽  
Jongmin Lee
Keyword(s):  
Transcranial Magnetic Stimulation ◽  
Magnetic Stimulation ◽  
Diffusion Tensor ◽  
Diffusion Tensor Tractography ◽  
And Diffusion
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