Demonstration of the postcommissural fibres of the fornix in short-inversion time inversion-recovery imaging on a high-field system

Citation
N. Saeki et al., Demonstration of the postcommissural fibres of the fornix in short-inversion time inversion-recovery imaging on a high-field system, NEURORADIOL, 43(7), 2001, pp. 547-550
Citations number
13
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Neurology,"Neurosciences & Behavoir
Journal title
NEURORADIOLOGY
ISSN journal
0028-3940 → ACNP
Volume
43
Issue
7
Year of publication
2001
Pages
547 - 550
Database
ISI
SICI code
0028-3940(200107)43:7<547:DOTPFO>2.0.ZU;2-V
Abstract
Short-inversion time inversion-recovery (STIR) imaging using a 3 tesla syst em was assessed to reveal the postcommissural fibres (PF) of the fornix, wh ich have rarely been highlighted neuroradiologically in the clinical settin g. We studied 27 normal subjects. Sequence parameters were TR/TE/TI 8000/52 / 150 ms. STIR was expected to take advantage of the high signal-to-noise r atio of a high-field system, due to the long repetition time. PF were ident ifiable in axial and coronal slices in all cases. They were bordered anteri orly and superiorly by the anterior commissure and posteriorly and inferior ly by the mamillary body. Behind the anterior commissure, they ran in an ar chshaped posterior and inferior course in the hypothalamic nuclei and joine d the mamillary body anterolaterally. They usually extended through three 3 -mm slices (with 1 mm interslice gap) in anteroposterior and vertical dimen sions. Little variation was observed in their course or size. Demonstration of the PF would provide a more detailed correlation of human neuroanatomy to hypothalamic function and individualised understanding of hypothalamic p athology and influence therapy.