Conclusion LASIK is scatheless to cornea endothelial cells, and can't bring modality change and density decrease.

DWI and ADC values are secure scatheless, accurate, and quickly methods to judge the lymph node either metastasis or hyperplasia.

Uroflowmetry testing is a great value in the diagnosis of urination disorders. It can impersonally display the function of emiction and has some good characters such as scatheless and handy.