gms | German Medical Science

57th Annual Meeting of the German Society of Neurosurgery
Joint Meeting with the Japanese Neurosurgical Society

German Society of Neurosurgery (DGNC)

11 - 14 May, Essen

Evaluation of the optic nerve in sellar and parasellar lesion using three-dimensional cycled Fast Imaging Employing Steady-state Acquisition (FIESTA-C)

Meeting Abstract

  • corresponding author T. Yamashita - Department of Neurosurgery, Sapporo Medical University, Sapporo, Japan
  • T. Mikami - Department of Neurosurgery, Sapporo Medical University, Sapporo, Japan
  • Y. Minamida - Department of Neurosurgery, Sapporo Medical University, Sapporo, Japan
  • T. Baba - Department of Neurosurgery, Sapporo Medical University, Sapporo, Japan
  • K. Houkin - Department of Neurosurgery, Sapporo Medical University, Sapporo, Japan

Deutsche Gesellschaft für Neurochirurgie. Japanische Gesellschaft für Neurochirurgie. 57. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie e.V. (DGNC), Joint Meeting mit der Japanischen Gesellschaft für Neurochirurgie. Essen, 11.-14.05.2006. Düsseldorf, Köln: German Medical Science; 2006. DocP 04.56

The electronic version of this article is the complete one and can be found online at:

Published: May 8, 2006

© 2006 Yamashita et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( You are free: to Share – to copy, distribute and transmit the work, provided the original author and source are credited.



Objective: The aim of this study was to assess the value of FIESTA-C imaging for visualization of the optic nerve pathway. The exact relationship between the tumour and the cranial nerves are very important for preoperative information. In patients with sellar and parasellar tumours, identification of the optic nerve will contribute to preservation during their surgery. FIESTA is the evolution of imaging of steady-state free procession to its perfect form. It generates T2/T1 contrast because of its short repetition time (TR) and the symmetrical and balanced gradient around the echo time (TE). Although, in sellar and parasellar lesion, conventional FIESTA was poor visualization of surrounding structures because of unstable magnetic field. 3D cycled FIESTA (FIESTA-C) was improved to remove artifacts and enable to evaluate the region.

Methods: Twelve consecutive patients with sellar and parasellar tumours underwent FIESTA-C sequence after contrast medium administration. We evaluated compression findings and visual field disorder pattern. Moreover we measured the cross-section of the optic nerve in the carotid cistern, and compared the atrophic side and non-atrophic side, which was evaluated by ophthalmoscopy. All examination were performed with a 1.5T scanner (Signa Infinity Excite; GE Medical Systems Milwaukee, Wisc., USA) using an 8 channel head coil. FIESTA-C was performed using the following parameters: TE=1.63 ms, TR=5.30ms, FA=65, FOV=14×14 cm.

Results: Intensity of all tumours increased on FIESTA-C imaging of the contrast enhancement, and the optic nerves were distinguished from tumour distinctly. In addition a status of the optic nerve in FIESTA-C reflected visual field disorders pattern well and was correspond to it with perioperative findings. The cross-section of the atrophic side was less than non-atrophic side statistically.

Conclusions: FIESTA-C sequence was useful for demonstration of the optic nerve status in sellar and parasellar tumours.