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The usefulness of ultrasound colour-Doppler twinkling artefact for detecting urolithiasis compared with low dose nonenhanced computerized tomography

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@article{d423d4aa87424e548f687c5c6102cdf6,
title = "The usefulness of ultrasound colour-Doppler twinkling artefact for detecting urolithiasis compared with low dose nonenhanced computerized tomography",
abstract = "This prospective study evaluates the usefulness of the twinkling artefact (TA) seen on colour-Doppler ultrasound (US) in diagnosing urolithiasis. US and standard computed tomography (CT) were performed blinded on 105 patients. B-mode US and colour-Doppler used separately and in combination showed 55% sensitivity and 99% specificity (positive predictive value [PPV] 67% and negative predictive value [NPV] 98%). Of CT verified stones, 61% were ≤3 mm. TAs were present in 74% of the B-mode stones (43% of all CT verified stones). Patients with CT verified stone disease had significantly more TAs in other foci than the stone(s) found on CT, suggestive of microlithiasis. In conclusion, colour-Doppler TA is a helpful supplement for detecting urolithiasis when CT is contraindicated. In addition, US can be valuable in monitoring stones left to pass without intervention if they have presented a TA. CT, US and US with colour-Doppler TA can be useful as complementary techniques for detecting stones.",
keywords = "Adult, Aged, Aged, 80 and over, Artifacts, Contrast Media, Female, Humans, Male, Middle Aged, Radiation Dosage, Reproducibility of Results, Sensitivity and Specificity, Tomography, X-Ray Computed, Ultrasonography, Doppler, Color, Urolithiasis",
author = "Winkel, {Rikke Rass} and Anna Kalhauge and Knud-Erik Fredfeldt",
note = "Copyright {\textcopyright} 2012 World Federation for Ultrasound in Medicine & Biology. Published by Elsevier Inc. All rights reserved.",
year = "2012",
doi = "10.1016/j.ultrasmedbio.2012.03.003",
language = "English",
volume = "38",
pages = "1180--7",
journal = "Ultrasound in Medicine and Biology",
issn = "0301-5629",
publisher = "Elsevier Inc",
number = "7",

}

RIS

TY - JOUR

T1 - The usefulness of ultrasound colour-Doppler twinkling artefact for detecting urolithiasis compared with low dose nonenhanced computerized tomography

AU - Winkel, Rikke Rass

AU - Kalhauge, Anna

AU - Fredfeldt, Knud-Erik

N1 - Copyright © 2012 World Federation for Ultrasound in Medicine & Biology. Published by Elsevier Inc. All rights reserved.

PY - 2012

Y1 - 2012

N2 - This prospective study evaluates the usefulness of the twinkling artefact (TA) seen on colour-Doppler ultrasound (US) in diagnosing urolithiasis. US and standard computed tomography (CT) were performed blinded on 105 patients. B-mode US and colour-Doppler used separately and in combination showed 55% sensitivity and 99% specificity (positive predictive value [PPV] 67% and negative predictive value [NPV] 98%). Of CT verified stones, 61% were ≤3 mm. TAs were present in 74% of the B-mode stones (43% of all CT verified stones). Patients with CT verified stone disease had significantly more TAs in other foci than the stone(s) found on CT, suggestive of microlithiasis. In conclusion, colour-Doppler TA is a helpful supplement for detecting urolithiasis when CT is contraindicated. In addition, US can be valuable in monitoring stones left to pass without intervention if they have presented a TA. CT, US and US with colour-Doppler TA can be useful as complementary techniques for detecting stones.

AB - This prospective study evaluates the usefulness of the twinkling artefact (TA) seen on colour-Doppler ultrasound (US) in diagnosing urolithiasis. US and standard computed tomography (CT) were performed blinded on 105 patients. B-mode US and colour-Doppler used separately and in combination showed 55% sensitivity and 99% specificity (positive predictive value [PPV] 67% and negative predictive value [NPV] 98%). Of CT verified stones, 61% were ≤3 mm. TAs were present in 74% of the B-mode stones (43% of all CT verified stones). Patients with CT verified stone disease had significantly more TAs in other foci than the stone(s) found on CT, suggestive of microlithiasis. In conclusion, colour-Doppler TA is a helpful supplement for detecting urolithiasis when CT is contraindicated. In addition, US can be valuable in monitoring stones left to pass without intervention if they have presented a TA. CT, US and US with colour-Doppler TA can be useful as complementary techniques for detecting stones.

KW - Adult

KW - Aged

KW - Aged, 80 and over

KW - Artifacts

KW - Contrast Media

KW - Female

KW - Humans

KW - Male

KW - Middle Aged

KW - Radiation Dosage

KW - Reproducibility of Results

KW - Sensitivity and Specificity

KW - Tomography, X-Ray Computed

KW - Ultrasonography, Doppler, Color

KW - Urolithiasis

U2 - 10.1016/j.ultrasmedbio.2012.03.003

DO - 10.1016/j.ultrasmedbio.2012.03.003

M3 - Journal article

C2 - 22502894

VL - 38

SP - 1180

EP - 1187

JO - Ultrasound in Medicine and Biology

JF - Ultrasound in Medicine and Biology

SN - 0301-5629

IS - 7

ER -

ID: 36766122