TY - JOUR T1 - MR appearance of the internal architecture of Ammon's horn. JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. SP - 23 LP - 26 VL - 17 IS - 1 AU - M J Miller AU - L P Mark AU - K C Ho AU - V M Haughton Y1 - 1996/01/01 UR - http://www.ajnr.org/content/17/1/23.abstract N2 - PURPOSE To determine whether the four subdivisions of Ammon's horn and six layers of CA1 seen histologically can be demonstrated with MR imaging.METHODS Specimens of cadaver brains were imaged in a 3.0-T MR imager with a 3.0-cm solenoid coil. The specimens were sectioned, stained, and examined histologically. On anatomic sections, the four subdivisions of Ammon's horn and six layers of CA1 were identified. The MR images were then compared with the anatomic sections.RESULTS Using geographic characteristics, we identified the four subdivisions of Ammon's horn. In CA1, the six layers could be identified by variations in signal intensity, width, and location.CONCLUSION This study suggests that, with MR imaging of sufficiently high resolution, the internal architecture of Ammon's horn may be identified. ER -