Significance of acoustic shadowing and comet tail artifacts in diagnosis of urinary calculi
Objective To evaluate the significance of acoustic shadowing and comet tail artifacts in detection of urinary calculi. Methods 238 cases of urinary calculi were researched,including the mineral composition and the size( height and width) of calculi,the occurrence of acoustic shadowing and comet tail artifacts,then analyzed those relevant relationships by Statistical Analysis System. Results (1) There was no statistical relationship between the acoustic shadowing artifacts and urinary calculi mineral composition}P<0. 05) ;(2)There was a statistically relevant relationship between the occurrence of acoustic shadowing artifacts and urinary calculi height (thickness) (P<C0. 05) ,but no statistical relationship with urinary calculi width(P>0. 05); (3(There was no statistical relationship between the occurrence of comet tail artifacts and urinary calculi width or height(P>0. 05). Conclusion (l)The occurrence of acoustic shadowing and comet tail artifacts is no relationship with urinary calculi mineral composition,and can not be used to predict urinary calculi mineral composition; (2)There is a directly relationship between the occurrence of acoustic shadowing artifacts and urinary calculi height, but there is no relationship between the occurrence of comet tail artifacts and urinary calculi width or height.