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          VOLUME 38 / ISSUE 2


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5 - Evaluation of color and power doppler twinkling artifacts from urinary tract and gallbladder calculi

Ayşe Deniz Kahraman, Nuran Yılmaz, Ali Şenol Çelebi, Kosti Can Çalışkan, Zeki Karpat

Objective: The aim of this study was to determine whether color and power doppler twinkling artifacts could be considered an additional diagnostic sonographic feature of urinary tract and gallbladder calculi. Material and methods: 40 patients with at least 1 urinary tract calculi and ancl 15 patients with at least 1 gallbladder calculi on sonography were examined with color doppler sonography. Examinations included grayscale, color doppler, power doppler and spectral doppler.

Results: A color artifact was present within and/or distal to 55 urinary tract calculus (% 84). Close vertical bands were detected in the spectrum display. 33 gallbladder calculi showed twinkling artifact (% 94).

Conclusion: Color and power doppler twinkling artifacts from urinary tract and gallbladder calculi occur frequently and may be considered an additional sonographic feature of urinary tract and gallbladder calculi.

Keywords: artifact, color doppler sonography

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