Objective Research the effect of Gaussian noise on the DTI parameters MD and FA. Materials and Methods Calculate the MD and FA values in ROIs, and analyze the relationship between MD,FA and the variances of gaussian noise. Results In a specific range, Gaussian noise almost has no influence on MD, and the visual performan change slightly. However the Gaussian noise influences FA evidently and the visual performance decrease gradually. Conclusion DTI parameter MD is more stable than parameter FA and certain noise can exist to reserve more image details.
|