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| 1 | Is combined functional magnetic resonance imaging and diffusion tensor tractography a useful tool for evaluation of somatosensory dysfunction recovery after intracerebral hemorrhage?显示文摘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. | Ji Heon Hong Sung Ho Jang | 2010 | Neural Regeneration Research2010，5，14： | 3 |
| 2 | Magnetic resonance diffusion tensor imaging-based evaluation of optic-radiation shape and position in meningioma显示文摘Employing magnetic resonance diffusion tensor imaging, three-dimensional white-matter imaging and conventional magnetic resonance imaging can demonstrate the tumor parenchyma, peritumoral edema and compression on surrounding brain tissue. A color-coded tensor map and three-dimensional tracer diagram were applied to clearly display the optic-radiation location, course and damage. Results showed that the altered anisotropy values of meningioma patients corresponded with optic-radiation shape, size and position on both sides. Experimental findings indicate that the magnetic resonance diffusion tensor imaging technique is a means of tracing and clearly visualizing the optic radiation. | Xueming Lv Xiaolei Chen Bainan Xu Jiashu Zhang Gang Zheng Jinjiang Li Fangye Li Guochen Sun | 2012 | Neural Regeneration Research2012，7，9： | 1 |
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