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Proceedings Paper

Using fMRI to guide neurosurgery in a combined 1.5Tesla MR operating room
Author(s): Haiying Liu; Walter A. Hall; Alastair J. Martin; Robert E. Maxwell; Charles L. Truwit
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Paper Abstract

To take advantage of MR-guided surgical procedures performed in a combined MR-OR, we have implemented and validated a practical fMRI scheme for localizing primary motor area and assessing its proximity to a lesion volume. The fMRI scheme consists of a dynamical blood oxygenation level dependent (BOLD) imaging technique and a motor task paradigm. The functional imaging was based on gradient-echo (GE) echo planar imaging (EPI) (TR/TE equals 3000/50 m sec). The task paradigm involves a periodic finger movement in which subject was instructed to tap his/her thumb on the other four fingers sequentially as well as to alternate between the right and left sides. During the task, a dynamical fMRI was performed concurrently covering the volume of interest. By using the fMRI scheme, we have successfully performed ten fMRI examinations immediately prior to surgery in the combined MR- OR on the same surgical table top to localize the eloquent functional area of interests. Also we have developed methods of detrending and presenting fMRI results to neurosurgeons in an intuitive 3-dimensional surface-rendered display format that closely matches the patient head position under intervention. Representative cases showed that fMRI results helped neurosurgeons making the optimal surgical decisions prior to craniotomy.

Paper Details

Date Published: 21 May 2001
PDF: 6 pages
Proc. SPIE 4321, Medical Imaging 2001: Physiology and Function from Multidimensional Images, (21 May 2001); doi: 10.1117/12.428156
Show Author Affiliations
Haiying Liu, Univ. of Minnesota/Twin Cities (United States)
Walter A. Hall, Univ. of Minnesota/Twin Cities (United States)
Alastair J. Martin, Univ. of Minnesota/Twin Cities (United States)
Robert E. Maxwell, Univ. of Minnesota/Twin Cities (United States)
Charles L. Truwit, Univ. of Minnesota/Twin Cities (United States)


Published in SPIE Proceedings Vol. 4321:
Medical Imaging 2001: Physiology and Function from Multidimensional Images
Chin-Tu Chen; Anne V. Clough, Editor(s)

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