In Medical digital images, produced by various

imaging devices like x-ray, CT, magnetic resonance imaging

(MRI), ultrasound, etc., use for diagnosis of diseases. Ultrasonic

imaging is a widely used medical imaging procedure because it is

economical, comparatively safe. The main problem during

diagnosis is the distortion. These distortions are termed as

‘Noise’. This study focus on one type noise, namely, ‘Speckle

Noise’, produced by ultrasonic devices. This paper concentrated

to reduce speckle noise and the studies the effect of different

filtering techniques for speckle reduction. The paper introduces

the speckle reducing anisotropic diffusion (SRAD) method that

reduces the noise effectively without loss of original image. The

experimental results proved that SRAD gives higher PSNR. The

performance of SRAD was superior compared to traditional lee,

frost, kaun filter.