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Plastic transformation of PET images
K J Friston1, C D Frith, P F Liddle
1MRC Cyclotron Unit, Hammersmith Hospital, London, U.K.
Journal of Computer Assisted Tomography
|July 1, 1991
Abstract:
A theory and technique are presented that allow nonlinear resampling of positron emission tomography data to remove nonlinear differences in brain shape. The resampling is determined empirically by a function relating the observed image and a desired template. The validity, reliability, and precision of the plastic transformation are compared with linear rescaling alone, within, and between subjects.