Summary
We have developed a method for mapping positions on the head, such as anatomical landmarks, electrode locations, and stimulation sites, onto magnetic resonance (MR) images of the head. This method is based on the registration of two representations of the head surface: a series of contours obtained from MR images and a set of points measured from the head. The three-dimensional coordinates of each head point were acquired with the use of a magnetic digitizer, whose source was removed from the equipment and mounted on top of the subject's head. This arrangement seemed less uncomfortable for the subject than head immobilization and allowed the acquisition of many points without compromising the precision of the measurements. The digitized head surface was registered to MR image head contours using a surface registration algorithm. The registration provided the rotation and translation parameters needed for mapping head positions onto MR images. The precision of this mapping method has been estimated to be in the range of 3 to 8 mm. This method has been used to map dipole sources in electroencephalography and magnetoencephalography and to impose maps of scalp sites used in transcranial magnetic stimulation onto MR and PET images of the brain.
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Anogianakis, G., Badier, J.M., Barrett, G., Erné, S., Fenici, R., Fenwick, P., Grandori, F., Hari, R., Hmoniemi, R., Mauguière, F., Lehmann, D., Perrin, E., Peters, M., Romani, G.-L. and Rossini, P.M. A consensus statement on relative merits of EEG and MEG. Electroencephalogr. Clin. Neurophysiol., 1992, 82: 317–319.
Bergström, M., Boëthius, J., Eriksson, L., Greitz, T., Ribbe, T. and Widén, L. Head fixation device for reproducible position alignment in transmission CT and positron emission tomography. J. Comp. Assist. Tomogr., 1981, 5: 136–141.
Boesecke, R., Bruckner, T. and Ende, G. Landmark based correlation of medical images. Phys. Med. Biol., 1990, 35: 121–126.
Chen, G.T.Y., Kessler, M.L. and Pitluck, S. Structure transfer in three dimensional medical image studies. In: Computer Graphics 1985. National Computer Graphics Association, Dallas TX, 1985: 171–175.
Cohen, D. and Cuffin, B.N. EEG versus MEG localization accuracy: theory and experiment. Brain Topogr., 1991, 4: 95–104.
Cohen, L.G., Hallett, M. and Lelli, S. Noninvasive mapping of human motor cortex with transcranial magnetic stimulation. In: S. Chokroverty (Ed.), Magnetic Stimulation in Clinical Neurophysiology. Butterworth, Stoneham, MA, 1990: 113–119.
De Munck, J.C., Vijn, P.C.M. and Speckreijse, H. A practical method for determining electrode positions on the head. Electroencephalogr. Clin. Neurophysiol., 1991, 78: 85–87.
Fishman, E.K., Magid, D., Ney, D.R., Chaney, E.L., Pizer, S.M., Rosenman, J.G., Levin, D.N., Vannier, M.W., Kuhlman, J.E. and Robertson, D.D. Three-dimensional imaging. Radiology, 1991, 181: 321–337.
Gevins, A.S. Dynamic functional topography of cognitive tasks. Brain Topogr., 1989, 2: 37–56.
Gevins, A.S. and Illes, J. Neurocognitive networks of the human brain. Ann. NY Acad. Sci., 1991, 620: 22–44.
Gevins, A.S., Brickett, P., Costales, B., Le, J. and Reutter, B. Beyond topographic mapping: towards functional-anatomical imaging with 124-channel EEGs and 3-D MRIs. Brain Topogr., 1990, 3: 53–64.
Gevins, A.S., Le, J., Brickett, P., Reutter, B. and Desmond, J. Seeing through the skull: advanced EEGs use MRIs to accurately measure cortical activity from the scalp. Brain Topogr., 1991, 4: 125–131.
Hall, L.O., Bensaid, A.M., Clarke, L.P., Velthuizen, R.P., Silbiger, M.S. and Bezdeck, J.C. A comparison of neural network and fuzzy clustering techniques in segmenting magnetic resonance images of the brain. IEEE Trans. Neural Networks, 1992, 3: 672–682.
Jiang, H., Holton, K. and Robb, R. Image registration of multimodality 3-D medical images by chamfer matching. Procedings of SPIE Biomedical Image Processing and Three-dimensional Microscopy, 1992, 1660: 356–366.
Konyshev, V.A., Maragey, R.A., Kholodov, Y.A., Verkhlutov, V.M. and Gorbach, A.M. Constructing a realistically shaped model of the human head. In: S.J. Williamson, M. Hoke, G. Stroink and M. Kotani (Eds.), Advances in Biomagnetism. Plenum Press, New York, 1989: 623–625.
Kuriki, S., Isobe, Y., Mizutani, Y. and Murase, M. Magnetic responses evoked by verbal and nonverbal stimuli. In: K. Atsumi, M. Kotani, S. Ueno, T. Katila and S.J. Williamson (Eds.), Biomagnetism '87. Tokyo Denki University Press, Tokyo, 1988: 262–265.
Law, S.K. and Nunez, P.L. Quantitative representation of the upper surface of the human head. Brain Topogr., 1991, 3: 365–371.
Lufkin, R.B., Robinson, J.D., Castro, D.J., Jabour, B.A., Duckwiler, G., Layfield, L.J. and Hanafee, W.N. Interventional magnetic resonance imaging in the head and neck. Top. Magn. Reson. Imaging, 1990, 2: 76: 80.
Papanicolaou, A.C., Baumann, S., Rogers, R.L., Saydjari, C., Amparo, E.G. and Eisenberg, H.M. Localization of auditory response sources using magnetoencephalography and magnetic resonance imaging. Arch. Neurol., 1990, 47: 33–37.
Pechura, C.M. and Martin, J.B. (Eds.). Mapping the Brain and its Functions. National Academy Press, Washington, DC, 1991.
Pelizzari, C.A., Chen, G.T.Y., Spelbring, D.R., Weichselbaum, R.R. and Chen, C.T. Accurate three-dimensional registration of CT, PET, and/or MR images of the brain. J. Comput. Assist. Tomogr., 1989, 13: 20–26.
Reite, M., Teale, P., Zimmerman, J., David, K. and Whalen, J. Source location of a 50 msec latency auditory evoked field component. Electroencephalogr. Clin. Neurophysiol., 1988, 70: 490–498.
Tan, K.K., Levin, D.N., Pelizzari, C.A. and Chen, G.T.Y. Interactive stereotaxic localization of brain anatomy. Radiology, 1990, 177(P): 217.
Towle, V.L., Bolanos, J., Suarez, D., Tan, K., Grzeszczuk, R., Pelizzari, C.A., Levin, D. and Spire, J.P. Merging the 10–20 electrode system locations with brain anatomy and DLM spherical models. Abstracts of the American Electroencephalographic Society Meeting, Philadelphia, December 1991: 55.
Wang, B., Toro, C., Zeffiro, T.A., Nagamine, T. and Hallett, M. A method for mapping electrophysiological sources into brain images. Science Innovation'92 Program, 1992: 89.
Wassermann, E.M., McShane, L.M., Hallett, M. and Cohen L.G. Noninvasive mapping of muscle representations in human motor cortex. Electroencephalogr. Clin. Neurophysiol., 1992a, 85: 1–8.
Wassermann, E.M., Wang, B., Toro, C., Zeffiro, T.A., Valls-Solé, J., Pascual-Leone, A. and Hallett, M. Projecting transcranial magnetic stimulation (TMS) maps into brain MRI. Soc. Neurosci. Abstr., 1992b, 18: 939.
Williamson, S.J., Lu, Z.-L., Karron, D. and Kaufman, L. Advantages and limitations of magnetic source imaging. Brain Topogr., 1991, 4: 169–180.
Yamamoto, T., Williamson, S.J., Kaufman, L., Nicholson, C. and Llinas, R. Neuromagnetic localization of neuronal activity in the human brain. Proc. Natl. Acad. Sci. USA, 1988, 85: 8732–8736.
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Dr. Wang was on leave from the State University of Campinas, Brazil, and was supported by the Brazilian Research Council (CNPq) and the Research Foundation of Sao Paulo (FAPESP). We are grateful to J. Trettau, W. Groves, R. Hill, and L. Johnson for technical assistance, to B.J. Hessie for skillful editing, and to Drs. S. Bookheimer, E.M. Wassermann, A. Pascual-Leone, J. Valls-Solé, R. Thatcher, C.N. Chen, R. Levin, and C.A. Pelizzari for their cooperation. Dr. B.J. Roth provided valuable criticisms. The support of Dr. M. Eden, Director of the Biomedical Engineering and Instrumentation Program, is appreciated.
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Wang, B., Toro, C., Zeffiro, T.A. et al. Head surface digitization and registration: A method for mapping positions on the head onto magnetic resonance images. Brain Topogr 6, 185–192 (1994). https://doi.org/10.1007/BF01187708
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DOI: https://doi.org/10.1007/BF01187708