Feasibility of 1.6-mm isotropic voxel diffusion tensor tractography in depicting limbic fibers.

Feasibility of 1.6-mm isotropic voxel diffusion tensor tractography in depicting limbic fibers. Research Abstract Details 

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Feasibility of 1.6-mm isotropic voxel diffusion tensor tractography in depicting limbic fibers. Abstract Text:

Shunrou Fujiwara,Makoto Sasaki,Yoshiyuki Kanbara,Takashi Inoue,Ryonoshin Hirooka,Akira Ogawa,

INTRODUCTION: We attempted to assess the feasibility of a 1.6-mm isotropic voxel diffusion tensor imaging (DTI) tractography at 3T in visualizing nerve bundles in the limbic system. METHODS: We examined 20 healthy volunteers by conventional DTI with a voxel size of 1.6 x 1.6 x 3.0 mm and by high-resolution DTI with a voxel size of 1.6 x 1.6 x 1.6 mm and generated tractographs of three limbic nerve bundles: the fornix, cingulum, and uncinate fasciculus. We visually assessed whether these bundles reached their targets and compared their diffusion parameters between the two techniques. RESULTS: The entire pathways of the fornix, cingulum, and uncinate fasciculus were more readily visualized by high-resolution DTI than by conventional DTI. Among these, the fimbria of the fornix and the uncinate fasciculus adjacent to the temporal pole were identified more frequently by high-resolution DTI (visualization rate 83 and 100%, respectively) than by conventional DTI (visualization rate 63 and 83%, respectively) at a statistical significance of P < 0.05 and P < 0.01, respectively). Fractional anisotropy values in the fornix, cingulum, and uncinate fasciculus by high-resolution DTI were significantly higher than those by conventional DTI (P < 0.01); in contrast, the apparent diffusion coefficient values of all these fibers except that of the fornix remained unchanged between the two techniques. CONCLUSION: The 1.6-mm istropic voxel DTI at 3T is a feasible visualization tool and can improve the precision of tracking nerve bundles of the limbic system.

Feasibility of 1.6-mm isotropic voxel diffusion tensor tractography in depicting limbic fibers. Publishing Authors By Initials

S Fujiwara,M Sasaki,Y Kanbara,T Inoue,R Hirooka,A Ogawa,

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Feasibility of 1.6-mm isotropic voxel diffusion tensor tractography in depicting limbic fibers. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Neuroradiology

VOLUME: 50

Page Numbers: 131-6

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ISSN: 0028-3940

DAY: 16

MONTH: 10

YEAR: 2007

Feasibility of 1.6-mm isotropic voxel diffusion tensor tractography in depicting limbic fibers. Information

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LANGUAGE: eng

NlmUniqueID: 1302751

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Grant and Affiliation Information for Feasibility of 1.6-mm isotropic voxel diffusion tensor tractography in depicting limbic fibers.

AFFILIATION: Advanced Medical Research Center, Iwate Medical University, 348-65 Tomegamori, Takizawa, 020-0193, Japan, shunfuji@iwate-med.ac.jp.

Country: Germany

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MEDLINETA: Neuroradiology

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