Application of wavelet transform in medical image

Wavelet transform inherits and develops Fourier transform,and the development is so fast.It is playing important roles in medical imageprocessing,detectionof biomedicalsignal,voice compound,earthquake signal analysis,and so on.Wavelet transform is suitable to detect the stochastic signal that is feeble and submerged in strong noise.It also is adapted to analyze the unstable signal so-urces such as the medical image.The basic theory and characters of wavelet transform is introduced.The applications that wavelet transform used in medical digital image compression,image noise elimination,enhancement for medical image,edge detection of image,medical image fusion are described.