Resizing MRI images using fourier transformation.

摘要

MRI images are selectively resized or "zoomed" by zero padding the time domain data. Fourier Transformation of the time domain data after zero padding provides spatial domain data which when displayed provide an image that is resized relative to images provided from the time domain data without zero padding. A "zoom" or magnification factor can be selected and the quantity of padded zeros varied in response to the zoom factor to provide different zoom ratios. Restricting zoom factors to certain values permits the fast Fourier Transform to be used in Fourier Transformation. <IMAGE>