Is combined functional magnetic resonance imaging and diffusion tensor tractography a useful tool for evaluation of somatosensory dysfunction recovery after intracerebral hemorrhage?

Title
Is combined functional magnetic resonance imaging and diffusion tensor tractography a useful tool for evaluation of somatosensory dysfunction recovery after intracerebral hemorrhage?
Author(s)
장성호홍지헌
Keywords
SENSORY HAND AREAS; MOTOR RECOVERY; CORTICOSPINAL TRACT; STROKE; MRI; ACTIVATION; BRAIN; REORGANIZATION; ORGANIZATION; CORTEX
Issue Date
201007
Publisher
SHENYANG EDITORIAL DEPT NEURAL REGENERATION RES
Citation
NEURAL REGENERATION RESEARCH, v.5, no.14, pp.1109 - 1112
Abstract
Diffusion tensor tractography allows the sensory fiber course of the medial lemniscus to be visualized. But diffusion tensor tractography for accurate evaluation of the repair of injured somatosensory tracts in stroke patients has been rarely reported. A 55-year-old female patient presented with severe somatosensory dysfunction of the left side caused by a spontaneous intracerebral hemorrhage on the right side. The somatosensory function of the affected side recovered to a nearly normal state at 7 weeks from onset. Functional magnetic resonance imaging revealed that at 3 weeks from onset, there was no cortical activation by touch at each hand; at 7 weeks, the contralateral cortex centered on the primary sensory cortex was found to be activated during touch and passive movements, and activation by passive movements was increased compared with that at 3 weeks. Diffusion tensor tractography revealed that a medial lemniscus on the affected (right) hemisphere was not observed at 3 weeks from onset, however, at 7 weeks, the unaffected (left) hemisphere passed along the medial lemniscus pathway from the pons to the primary sensory cortex. These findings indicate that combined functional magnetic resonance imaging and diffusion tensor tractography would allow more accurate evaluation of the architecture and integrity of somatosensory tracts and is a useful method to investigate the recovery of somatosensory dysfunction in stroke patients.
URI
http://hdl.handle.net/YU.REPOSITORY/23924http://dx.doi.org/10.3969/j.issn.1673-5374.2010.14.013
ISSN
1673-5374
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의과대학 > 재활의학교실 > Articles
의과대학 > 영상의학과학교실 > Articles
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