| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Neuroradiology |
1 From the Department of Diagnostic Imaging and Nuclear Medicine (T.O., Y.M., Y.F., M.K., A.Y., K.T.) and Department of Therapeutic Radiology and Oncology (M.H.), Graduate School of Medicine, and Human Brain Research Center (T.H., S.U., H.F.), Kyoto University, 54 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto-shi, Kyoto 606-8507, Japan. From the 2004 RSNA Annual Meeting. Received December 30, 2004; revision requested March 17, 2005; revision received May 4; final version accepted June 1. Supported in part by grants from the Ministry of Health, Labor and Welfare of Japan (k0800006-01) and the Ministry of Education Culture, Sports, Science and Technology of Japan (C)(15591270). Address correspondence to Y.M. (e-mail: mikiy{at}kuhp.kyoto-u.ac.jp).
Purpose: To prospectively evaluate the depiction of brain fiber tracts at 3.0- versus 1.5-T diffusion-tensor (DT) fiber tractography performed with parallel imaging.
Materials and Methods: Institutional review board approval was obtained, and each subject provided written informed consent. Subjects were 30 healthy volunteers (15 men, 15 women; mean age, 28 years; age range, 21–46 years). Single-shot spin-echo echo-planar magnetic resonance (MR) sequences with parallel imaging were applied. Four fiber tracts were reconstructed: corticospinal tract (CST), superior longitudinal fasciculus (SLF), corpus callosum (CC), and fornix. Two neuroradiologists compared 3.0- and 1.5-T tractography in terms of fiber tract depiction by using five depiction scores (scores 0–4) and numbers of reconstructed tract fibers and in terms of lateral asymmetry in the CST by using numbers of reconstructed fibers. The Wilcoxon signed rank test was applied for statistical analysis.
Results: Visual scores for both CST hemispheres (P < .001), the right SLF (P = .005), the CC (P = .01), and the right fornix (P = .04) were higher at 3.0-T DT tractography. Larger numbers of CST (right, P = .008; left, P < .001), SLF (right, P = .001; left, P = .02), and fornix (bilaterally, P = .02) tract fibers were depicted at 3.0 T. The asymmetry index for the CST was lower (P < .001) at 3.0 T. Visual scores for the left SLF and the left fornix and numbers of CC tract fibers were not significantly different.
Conclusion: Depiction of most fiber tracts was improved at 3.0-T DT tractography compared with depiction at 1.5-T tractography.
© RSNA, 2006
This article has been cited by other articles:
|
|
 |
|
  S. Kakeda, Y. Korogi, K. Kamada, N. Ohnari, J. Moriya, T. Sato, M. Kitajima, H. Hasnine, and N. Hirata Signal Intensity of the Motor Cortex on Phase-Weighted Imaging at 3T AJNR Am. J. Neuroradiol., June 1, 2008; 29(6): 1171 - 1175. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 C. K. Kuhl, F. Traber, and H. H. Schild Whole-Body High-Field-Strength (3.0-T) MR Imaging in Clinical Practice * Part I. Technical Considerations and Clinical Applications Radiology, March 1, 2008; 246(3): 675 - 696. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 L. Bassi, D. Ricci, A. Volzone, J. M. Allsop, L. Srinivasan, A. Pai, C. Ribes, L. A. Ramenghi, E. Mercuri, F. Mosca, et al. Probabilistic diffusion tractography of the optic radiations and visual function in preterm infants at term equivalent age Brain, February 1, 2008; 131(2): 573 - 582. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 M. Ashtari, J. Cottone, B. A. Ardekani, K. Cervellione, P. R. Szeszko, J. Wu, S. Chen, and S. Kumra Disruption of White Matter Integrity in the Inferior Longitudinal Fasciculus in Adolescents With Schizophrenia as Revealed by Fiber Tractography Arch Gen Psychiatry, November 1, 2007; 64(11): 1270 - 1280. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
P. G. P. Nucifora, R. Verma, S.-K. Lee, and E. R. Melhem Diffusion-Tensor MR Imaging and Tractography: Exploring Brain Microstructure and Connectivity Radiology, November 1, 2007; 245(2): 367 - 384. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J.H. Gilmore, W. Lin, I. Corouge, Y.S.K. Vetsa, J.K. Smith, C. Kang, H. Gu, R.M. Hamer, J.A. Lieberman, and G. Gerig Early Postnatal Development of Corpus Callosum and Corticospinal White Matter Assessed with Quantitative Tractography AJNR Am. J. Neuroradiol., October 1, 2007; 28(9): 1789 - 1795. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 N. Mikuni, T. Okada, R. Enatsu, Y. Miki, S.-i. Urayama, J. A Takahashi, K. Nozaki, H. Fukuyama, and N. Hashimoto Clinical significance of preoperative fibre-tracking to preserve the affected pyramidal tracts during resection of brain tumours in patients with preoperative motor weakness J. Neurol. Neurosurg. Psychiatry, July 1, 2007; 78(7): 716 - 721. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
T. Okada, Y. Miki, K. Kikuta, N. Mikuni, S. Urayama, Y. Fushimi, A. Yamamoto, N. Mori, H. Fukuyama, N. Hashimoto, et al. Diffusion Tensor Fiber Tractography for Arteriovenous Malformations: Quantitative Analyses to Evaluate the Corticospinal Tract and Optic Radiation AJNR Am. J. Neuroradiol., June 1, 2007; 28(6): 1107 - 1113. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
T. Okada, N. Mikuni, Y. Miki, K.-i. Kikuta, S.-i. Urayama, T. Hanakawa, Y. Fushimi, A. Yamamoto, M. Kanagaki, H. Fukuyama, et al. Corticospinal Tract Localization: Integration of Diffusion-Tensor Tractography at 3-T MR Imaging with Intraoperative White Matter Stimulation Mapping--Preliminary Results Radiology, September 1, 2006; 240(3): 849 - 857. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| RADIOLOGY | RADIOGRAPHICS | RSNA JOURNALS ONLINE |
