- In Pre-voiding study, is saw color twinkle with no detectable stone.
But color twinkle is sensitive, i followed it.
. - In post-voiding study, nearly same finding seen on TS view.
But in LS view the stone is finally revealed.
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___How to improve visualization of such distal ureteric stone:- - Partial filling of U.B is better than over filling, allowing more transducer pressure comfortably.
- Use LS oblique view along the expected course of distal ureter.
- Zoom the image and lower the gain.
- Adjust the focus to distal ureter.
- Increase the frequency to increase the resolution.
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In ours case >> Distal right ureteric stone causing low grade / partial obstruction.
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-Color Twinkle artifact-
