Location of the sensorimotor cortex: functional and conventional MR compared. AJNR Am J Neuroradiol 1995;16(10):2109-13
Date
11/01/1995Pubmed ID
8585502Pubmed Central ID
PMC8337224Scopus ID
2-s2.0-0028804335 (requires institutional sign-in at Scopus site) 53 CitationsAbstract
PURPOSE: To determine the value of functional MR imaging to supplement conventional MR imaging for locating the rolandic cortex.
METHODS: Parasagittal MR images acquired in conjunction with functional MR images were reviewed. The central sulcus was identified on the MR images by conventional parcellation methods. In the functional MR images, the sensorimotor cortex (rolandic cortex) was identified by the activation secondary to finger and thumb movement or tactile stimulation of the palm. The location of the central sulcus and rolandic cortex was compared.
RESULTS: In 18 of 23 studies, the central sulcus selected by anatomic criteria coincided exactly or approximately with the cortex activated by the motor or sensory tasks. In two cases of tumor, the rolandic cortex could be located by means of the activation, but the central sulcus was not identified because of severe distortion of anatomic landmarks. In two volunteers, the central sulcus identified by anatomic landmarks did not coincide with the activated cortex.
CONCLUSION: This study demonstrates that functional imaging supplements anatomic imaging in locating the sensorimotor cortex. Functional MR imaging may be a useful adjunct to conventional MR imaging to determine noninvasively the proximity of eloquent brain to focal brain lesions.
Author List
Yetkin FZ, Papke RA, Mark LP, Daniels DL, Mueller WM, Haughton VMAuthor
Wade M. Mueller MD Professor in the Neurosurgery department at Medical College of WisconsinMESH terms used to index this publication - Major topics in bold
AdultAged
Arousal
Brain Mapping
Brain Neoplasms
Craniotomy
Dominance, Cerebral
Epilepsy, Temporal Lobe
Female
Frontal Lobe
Hand
Humans
Magnetic Resonance Imaging
Male
Middle Aged
Motor Cortex
Muscle Contraction
Reference Values
Somatosensory Cortex
Temporal Lobe
Touch
