Ryan Hsi
Last active: 2/26/2019

B-mode ultrasound versus color Doppler twinkling artifact in detecting kidney stones.

Sorensen MD, Harper JD, Hsi RS, Shah AR, Dighe MK, Carter SJ, Moshiri M, Paun M, Lu W, Bailey MR
J Endourol. 2013 27 (2): 149-53

PMID: 23067207 · PMCID: PMC3573723 · DOI:10.1089/end.2012.0430

PURPOSE - To compare color Doppler twinkling artifact and B-mode ultrasonography in detecting kidney stones.

PATIENTS AND METHODS - Nine patients with recent CT scans prospectively underwent B-mode and twinkling artifact color Doppler ultrasonography on a commercial ultrasound machine. Video segments of the upper pole, interpolar area, and lower pole were created, randomized, and independently reviewed by three radiologists. Receiver operator characteristics were determined.

RESULTS - There were 32 stones in 18 kidneys with a mean stone size of 8.9±7.5 mm. B-mode ultrasonography had 71% sensitivity, 48% specificity, 52% positive predictive value, and 68% negative predictive value, while twinkling artifact Doppler ultrasonography had 56% sensitivity, 74% specificity, 62% positive predictive value, and 68% negative predictive value.

CONCLUSIONS - When used alone, B-mode is more sensitive, but twinkling artifact is more specific in detecting kidney stones. This information may help users employ twinkling and B-mode to identify stones and developers to improve signal processing to harness the fundamental acoustic differences to ultimately improve stone detection.

MeSH Terms (10)

Artifacts Demography Female Humans Kidney Calculi Male Middle Aged ROC Curve Ultrasonics Ultrasonography, Doppler, Color

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