Presence of urinary calculi can be diagnosed by a visual aid such as

The correct answer is cystoscope. The goals of imaging of urinary calculi are to conclude the presence of stones within the urinary tract, evaluate for complications, approximation the likelihood of stone passage also approve stone passage then calculate the stone burden, and evaluate disease activity. 

alzheimer's disease;

well when looking at this if you think about it   negativley and positivley   react with each other and when the first layer gets full they add layers it starts with 2 on the first layer and it constantly goes on until the official number is there