Using fMRI to guide neurosurgery in a combined 1.5Tesla MR operating room

Haiying Liu; Walter A. Hall; Alastair J. Martin; Robert E. Maxwell; Charles L. Truwit

doi:10.1117/12.428156

21 May 2001 Using fMRI to guide neurosurgery in a combined 1.5Tesla MR operating room

Haiying Liu, Walter A. Hall, Alastair J. Martin, Robert E. Maxwell, Charles L. Truwit

Proceedings Volume 4321, Medical Imaging 2001: Physiology and Function from Multidimensional Images; (2001) https://doi.org/10.1117/12.428156
Event: Medical Imaging 2001, 2001, San Diego, CA, United States

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.

Citation Download Citation

Haiying Liu, Walter A. Hall, Alastair J. Martin, Robert E. Maxwell, and Charles L. Truwit "Using fMRI to guide neurosurgery in a combined 1.5Tesla MR operating room", Proc. SPIE 4321, Medical Imaging 2001: Physiology and Function from Multidimensional Images, (21 May 2001); https://doi.org/10.1117/12.428156

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