scholarly journals Morphologic Variants of the Hand Motor Cortex in Developing Brains from Neonates through Childhood Assessed by MR Imaging

2022 ◽  
Author(s):  
F. Wu ◽  
H. Zhao ◽  
Y. Zhang ◽  
M. Wang ◽  
C. Liu ◽  
...  
Keyword(s):  
Motor Cortex ◽  
Mr Imaging

Functional MR Imaging of the Motor Cortex in Active and Passive Movement: Qualitative and Quantitative Changes

2002 ◽  
Vol 46 (5) ◽  
pp. 425
Author(s):  
Ki Bong Yu ◽  
Myung Kwan Lim ◽  
Hyung Jin Kim ◽  
Jun Soo Byun ◽  
Young Kook Cho ◽  
...  
Keyword(s):  
Motor Cortex ◽  
Mr Imaging ◽  
Passive Movement ◽  
Qualitative And Quantitative ◽  
Functional Mr Imaging ◽  
Quantitative Changes

scholarly journals Epidural motor cortex stimulation with functional imaging guidance

2001 ◽  
Vol 11 (3) ◽  
pp. 1-4 ◽  
Author(s):  
Alon Y. Mogilner ◽  
Ali R. Rezai
Keyword(s):  
Motor Cortex ◽  
Mr Imaging ◽  
Functional Imaging ◽  
Surgical Planning ◽  
Functional Brain Imaging ◽  
Anatomical Landmarks ◽  
Motor Cortex Stimulation ◽  
Imaging Data ◽  
Direct Stimulation ◽  
Imaging Guidance

Chronic epidural motor cortex stimulation (MCS) has been shown to have promise in the treatment of patients with refractory deafferentation pain. Precise placement of the electrode over the motor cortex region corresponding to the area of pain is essential for the success of this procedure. Whereas standard anatomical landmarks have been used in the past in conjunction with image guidance, the use of functional brain imaging can be beneficial in the precise surgical planning. The authors report the use of functional imaging–guided frameless stereotactic surgery for epidural MCS. Five patients underwent MCS in which functional imaging guidance was used. Prior to surgery, patients underwent magnetic resonance (MR) imaging with skin fiducial markers placed on standard anatomical reference prints, followed by magnetoencephalography (MEG) mapping of the sensory and motor cortices. In two patients, functional MR imaging was also performed using a motor task paradigm. The functional imaging data were integrated into a frameless stereotactic database by using a three-dimensional coregistration algorithm. Subsequently, a frameless stereotactic craniotomy was performed using the integrated anatomical and functional imaging data for surgical planning. Intraoperative somatosensory evoked potentials (SSEPs) and direct stimulation were used to confirm the target and final placement of the electrode. Direct stimulation and SSEPs performed intraoperatively confirmed the accuracy of the functional imaging data. Trial periods of stimulation successfully reduced pain in three of the five patients who then underwent permanent internal placement of the system. At a mean 6-month follow up, these patients reported an average reduction in pain of 55% on a visual analog scale. The integration of functional and anatomical imaging data allows for precise and efficient surgical planning and may reduce the time necessary for intraoperative physiological verification.

Motor Neuron Diseases: Comparison of Single-Voxel Proton MR Spectroscopy of the Motor Cortex with MR Imaging of the Brain

Radiology ◽  
1999 ◽  
Vol 212 (3) ◽  
pp. 763-769 ◽  
Author(s):  
Stephen Chan ◽  
Dikoma C. Shungu ◽  
Annette Douglas-Akinwande ◽  
Dale J. Lange ◽  
Lewis P. Rowland
Keyword(s):  
Motor Cortex ◽  
Mr Imaging ◽  
Motor Neuron ◽  
Mr Spectroscopy ◽  
Motor Neuron Diseases ◽  
Proton Mr Spectroscopy ◽  
Single Voxel ◽  
The Brain

Functional magnetic resonance imaging of sensory and motor cortex: comparison with electrophysiological localization

1995 ◽  
Vol 83 (2) ◽  
pp. 262-270 ◽  
Author(s):  
Aina Puce ◽  
R. Todd Constable ◽  
Marie L. Luby ◽  
Gregory McCarthy ◽  
Anna C. Nobre ◽  
...  
Keyword(s):  
Electrical Stimulation ◽  
Magnetic Resonance ◽  
Motor Cortex ◽  
Mr Imaging ◽  
Sensorimotor Cortex ◽  
Functional Magnetic Resonance ◽  
Planar Imaging ◽  
Content Type ◽  
Functional Mr Imaging ◽  
Fine Print

✓ Functional magnetic resonance (MR) imaging was performed using a 1.5-tesla MR system to localize sensorimotor cortex. Six neurologically normal subjects were studied by means of axial gradient-echo images with a motor task and one or more sensory tasks: 1) electrical stimulation of the median nerve; 2) continuous brushing over the thenar region; and 3) pulsed flow of compressed air over the palm and digits. An increased MR signal was observed in or near the central sulcus, consistent with the location of primary sensory and motor cortex. Four patients were studied using echo planar imaging sequences and motor and sensory tasks. Three patients had focal refractory seizures secondary to a lesion impinging on sensorimotor cortex. Activation seen on functional MR imaging was coextensive with the location of the sensorimotor area determined by evoked potentials and electrical stimulation. Functional MR imaging provides a useful noninvasive method of localization and functional assessment of sensorimotor cortex.

Persistent mirror movements: functional MR imaging of the hand motor cortex.

Radiology ◽  
1997 ◽  
Vol 203 (2) ◽  
pp. 545-552 ◽  
Author(s):  
G L Leinsinger ◽  
D T Heiss ◽  
A G Jassoy ◽  
T Pfluger ◽  
K Hahn ◽  
...  
Keyword(s):  
Motor Cortex ◽  
Mr Imaging ◽  
Mirror Movements ◽  
Functional Mr Imaging

scholarly journals New Morphologic Variants of the Hand Motor Cortex as Seen with MR Imaging in a Large Study Population

2007 ◽  
Vol 28 (8) ◽  
pp. 1480-1485 ◽  
Author(s):  
M. Caulo ◽  
C. Briganti ◽  
P.A. Mattei ◽  
B. Perfetti ◽  
A. Ferretti ◽  
...  
Keyword(s):  
Motor Cortex ◽  
Mr Imaging ◽  
Large Study ◽  
Study Population

scholarly journals The Zeiss-MKM system for frameless image-guided approach in epidural motor cortex stimulation for central neuropathic pain

2001 ◽  
Vol 11 (3) ◽  
pp. 1-6 ◽  
Author(s):  
Benoit Pirotte ◽  
Philippe Voordecker ◽  
Freddy Joffroy ◽  
Nicolas Massager ◽  
David Wikler ◽  
...  
Keyword(s):  
Neuropathic Pain ◽  
Motor Cortex ◽  
Mr Imaging ◽  
Success Rate ◽  
Navigation System ◽  
Image Guidance ◽  
Motor Cortex Stimulation ◽  
Spatial Accuracy ◽  
Central Sulcus ◽  
Neuronavigation System

Object Twelve patients (seven female, and five male, mean age 55.6 years) suffering from refractory central (ischemic/traumatic [eight cases]) and neuropathic pain (trigeminal neuropathy [four cases]) underwent surgery for the implantation of an epidural motor cortex stimulation (MCS) device in which the authors used a frameless neuronavigation system, the Zeiss-MKM microscope. Methods The authors assessed the spatial accuracy of the neuronavigation system and its potential contribution to improve the quality of targeting pain. In these patients, the positions of the central sulcus, defined by stereotactic magnetic resonance MR imaging, intraoperative somatosensory evoked potentials (SSEPs) and subdural visual verification, were correlated into the stereotactic neuronavigation planning procedure. The mean spatial accuracy of distance between (MR) imaging–defined and actual central sulcus was 2.4 mm (range 5–10 mm). The intraoperative SSEP-defined central sulcus was close to that defined by MR imaging (mean distance 6.4 mm). Although very precise, intra-operative SSEP recordings were impaired by artifacts and wave attenuation in six of the 12 patients. Stereotactic correlations between anatomical and functional data in the navigation system corrected final targeting in 10 of 12 cases. Pain relief was obtained in eight patients. Indeed, inappropriate targeting probably explains the reported variable success rate of MCS and certainly underestimates the actual efficacy. Conclusions Since intraoperative SSEP monitoring has, for many years, been considered the standard procedure to approach motor target, the development of an accurate stereotactic image guidance system could help to increase the efficacy of MCS on the alleviation of pain. The excellent spatial accuracy provided by the Zeiss-MKM navigation system allows precise data correlations that represent a remarkable means to validate functional MR imaging as an alternative to SSEP. The authors believe that developing stereotactic image guidance with such a navigation system could improve the success rate of MCS.

Sign in / Sign up

Export Citation Format

Share Document