Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Acad Radiol. 2006 Jan;13(1):73-6.

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

Author information

  • 1Department of Imaging Science, University of Rochester Medical Center, 601 Elmwood Avenue, Box 648, Rochester, NY 14642-8648, USA. Akio_Hiwatashi@urmc.rochester.edu

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 x 10(-3) mm(2)/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.

PMID:
16399034
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Write to the Help Desk