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http://dx.doi.org/10.5392/JKCA.2016.16.10.291

Usefulness of Twinkling Artifacts in Color Doppler Ultrasonography  

Sim, Hyun-Sun (고려대학교 보건과학대학 방사선학과/인구보건복지협회)
Kwon, Kyung-Tae (동남보건대학교 방사선과)
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Abstract
The aim of the study was to investigate the diagnostic value of the color Doppler twinkling artifact in disease of urinary system. The intensity of twinkling artifact(TA) with color Doppler was classified into 3 levels, 0(non-TA) to 3(distinct TA). In the in vitro study, acorn jelly with various materials on top was examined using color Doppler at B-mode sonography in a water bath for TA. 31 patients with diagnosis of urinary calculi(renal stones 16, urinary stones 15) based on B-mode sonography were studied in vivo for TA. The materials with rough surfaces such as salt, screw and cubics at B-mode sonography with color Doppler contributed to causing TA. At B-mode sonography without color Doppler 37% of renal stones and 60% of ureter stones were detected. but at B-mode sonography with color Doppler TA was demonstrated for all cases. Superficial roughness of materials affected occurrence of TA at B-mode sonography with color Doppler. Therefore, TA at B-mode sonography without color Doppler could play a role in confident diagnosis of the disease of urinary system.
Keywords
Color Doppler; Renal Stone; Twinkling Artifact; Ureter Stone; Urinary Calculi;
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