Fractional anisotropy is higher in heschl's gyrus than in superior temporal gyrus in normal subjects

Hiwatashi Akio, Jianhui Zhong, Sven E. Ekholm, Per Lennart A Westesson

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Rationale and Objectives. The first Heschl's gyrus (HG) is believed to receive the core projection of the acoustic radiation. We examined if it were possible to differentiate the subcortical white matter of the HG from the superior temporal gyrus (STG) using diffusion tensor (DT) imaging. Materials and Methods. The study was approved and informed consent was obtained in accordance with the guidelines of our Institutional Review Board for human subject studies. We examined six healthy adult volunteers with DT images using 20 orientations and repeated 11 times. The fractional anisotropy (FA) and the apparent diffusion coefficient (ADC) were calculated. Results. The mean FA of the subcortical white matter of the HG (0.37) was higher than that of the STG (0.27) on both sides (P < .01). There was no statistically significant difference when comparing left and right HG and STG (P > .05). There was no statistically significant difference in mean ADC of the HGs and STGs (0.75 × 10-3 mm2/sec, P > .05). Conclusions. The FA in the subcortical white matter of the HG was higher than that of the STG in both hemispheres. These changes in DT imaging may be accounted for by the presence of the auditory radiations.

Original languageEnglish
Pages (from-to)73-76
Number of pages4
JournalAcademic Radiology
Volume13
Issue number1
DOIs
Publication statusPublished - Jan 1 2006
Externally publishedYes

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Auditory Cortex
Anisotropy
Temporal Lobe
Diffusion Tensor Imaging
Radiation
Research Ethics Committees
Informed Consent
Acoustics
Healthy Volunteers
Guidelines
White Matter

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

Cite this

Fractional anisotropy is higher in heschl's gyrus than in superior temporal gyrus in normal subjects. / Akio, Hiwatashi; Zhong, Jianhui; Ekholm, Sven E.; Westesson, Per Lennart A.

In: Academic Radiology, Vol. 13, No. 1, 01.01.2006, p. 73-76.

Research output: Contribution to journalArticle

Akio, Hiwatashi ; Zhong, Jianhui ; Ekholm, Sven E. ; Westesson, Per Lennart A. / Fractional anisotropy is higher in heschl's gyrus than in superior temporal gyrus in normal subjects. In: Academic Radiology. 2006 ; Vol. 13, No. 1. pp. 73-76.
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