title: Elucidation of White Matter Tracts of the Human Amygdala by Detailed Comparison between High-Resolution Postmortem Magnetic Resonance Imaging and Histology.
abstract: The amygdala has attracted considerable research interest because of its potential involvement in various neuropsychiatric disorders. Recently, attempts have been made using magnetic resonance imaging (MRI) to evaluate the integrity of the axonal connections to and from the amygdala under pathological conditions. Although amygdalar pathways have been studied extensively in animal models, anatomical references for the human brain are limited to histology-based resources from a small number of slice locations, orientations and annotations. In the present study, we performed high-resolution (250 μm) MRI of postmortem human brains followed by serial histology sectioning. The histology data were used to identify amygdalar pathways, and the anatomical delineation of the assigned structures was extended into 3D using the MRI data. We were able to define the detailed anatomy of the stria terminalis and amygdalofugal pathway, as well as the anatomy of the nearby basal forebrain areas, including the substantia innominata. The present results will help us understand in detail the white matter structures associated with the amygdala, and will serve as an anatomical reference for the design ofin vivoMRI studies and interpretation of their data.
authors.affiliation: Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine Baltimore, MD, USA.
authors.forename: Susumu
authors.initials: S
authors.lastname: Mori
authors.affiliation: Department of Pathology, Division of Neuropathology, Johns Hopkins University School of Medicine Baltimore, MD, USA.
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Kageyama
authors.affiliation: Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine Baltimore, MD, USA.
authors.forename: Zhipeng
authors.initials: Z
authors.lastname: Hou
authors.affiliation: Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine Baltimore, MD, USA.
authors.forename: Manisha
authors.initials: M
authors.lastname: Aggarwal
authors.affiliation: Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine Baltimore, MD, USA.
authors.forename: Jaymin
authors.initials: J
authors.lastname: Patel
authors.affiliation: Center for Imaging Science, Johns Hopkins University Baltimore, MD, USA.
authors.forename: Timothy
authors.initials: T
authors.lastname: Brown
authors.affiliation: Center for Imaging Science, Johns Hopkins UniversityBaltimore, MD, USA; Institute for Computational Medicine, Johns Hopkins UniversityBaltimore, MD, USA; Department of Biomedical Engineering, Johns Hopkins University School of MedicineBaltimore, MD, USA.
authors.forename: Michael I
authors.initials: MI
authors.lastname: Miller
authors.affiliation: Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine Baltimore, MD, USA.
authors.forename: Dan
authors.initials: D
authors.lastname: Wu
authors.affiliation: Department of Pathology, Division of Neuropathology, Johns Hopkins University School of Medicine Baltimore, MD, USA.
authors.forename: Juan C
authors.initials: JC
authors.lastname: Troncoso
keywords: MRI; amygdala; amygdalofugal pathway; diffusion tensor imaging; histology; microimaging; stria terminalis; white matter anatomy