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Original Research 
RMJ. 2021; 46(4): 830-833


Diagnostic accuracy of Twinkling Artifact in detection of nephrolithiasis with CT-KUB as Gold Standard

Sumiya Arshad, Rabia Ashraf, Faiza Farooq, Muhammad Mubeen Ul Haq.

Abstract
Objective: To prospectively evaluate the diagnostic accuracy of twinkling artifacts in the detection of nephrolithiasis, with CT KUB as a gold standard.
Methodology: This cross-sectional study was conducted at The University of Lahore Teaching Hospital, Lahore from December 2019 to June 2020. It included 200 patients undergoing CT scans for nephrolithiasis and were evaluated by Ultrasound (grayscale and Doppler) which was performed by an experienced radiologist who was blinded to the results of unenhanced CT KUB. The presence, number, location, and size of renal twinkling artifacts and size of renal calculi were recorded. Sonographic findings were then correlated with unenhanced CT.
Results: The presence of sonographic renal twinkling artifact, in general, had an 80% positive predictive value for detecting nephrolithiasis with sensitivity of 75.6% and specificity of 46.1%. The negative predictive value (NPV) of doppler US vs. CT-KUB in diagnosing nephrolithiasis was 40.0% with a diagnostic accuracy of 68%.
Conclusion: Renal twinkling artifact can be reliably used for the screening and detection of nephrolithiasis in patients with renal calculi.

Key words: CT-KUB, nephrolithiasis, doppler US, twinkling artifact.


 
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How to Cite this Article
Pubmed Style

Arshad S, Ashraf R, Farooq F, Haq MMU. Diagnostic accuracy of Twinkling Artifact in detection of nephrolithiasis with CT-KUB as Gold Standard. RMJ. 2021; 46(4): 830-833.


Web Style

Arshad S, Ashraf R, Farooq F, Haq MMU. Diagnostic accuracy of Twinkling Artifact in detection of nephrolithiasis with CT-KUB as Gold Standard. http://www.rmj.org.pk/?mno=64879 [Access: October 14, 2021].


AMA (American Medical Association) Style

Arshad S, Ashraf R, Farooq F, Haq MMU. Diagnostic accuracy of Twinkling Artifact in detection of nephrolithiasis with CT-KUB as Gold Standard. RMJ. 2021; 46(4): 830-833.



Vancouver/ICMJE Style

Arshad S, Ashraf R, Farooq F, Haq MMU. Diagnostic accuracy of Twinkling Artifact in detection of nephrolithiasis with CT-KUB as Gold Standard. RMJ. (2021), [cited October 14, 2021]; 46(4): 830-833.



Harvard Style

Arshad, S., Ashraf, . R., Farooq, . F. & Haq, . M. M. U. (2021) Diagnostic accuracy of Twinkling Artifact in detection of nephrolithiasis with CT-KUB as Gold Standard. RMJ, 46 (4), 830-833.



Turabian Style

Arshad, Sumiya, Rabia Ashraf, Faiza Farooq, and Muhammad Mubeen Ul Haq. 2021. Diagnostic accuracy of Twinkling Artifact in detection of nephrolithiasis with CT-KUB as Gold Standard. Rawal Medical Journal, 46 (4), 830-833.



Chicago Style

Arshad, Sumiya, Rabia Ashraf, Faiza Farooq, and Muhammad Mubeen Ul Haq. "Diagnostic accuracy of Twinkling Artifact in detection of nephrolithiasis with CT-KUB as Gold Standard." Rawal Medical Journal 46 (2021), 830-833.



MLA (The Modern Language Association) Style

Arshad, Sumiya, Rabia Ashraf, Faiza Farooq, and Muhammad Mubeen Ul Haq. "Diagnostic accuracy of Twinkling Artifact in detection of nephrolithiasis with CT-KUB as Gold Standard." Rawal Medical Journal 46.4 (2021), 830-833. Print.



APA (American Psychological Association) Style

Arshad, S., Ashraf, . R., Farooq, . F. & Haq, . M. M. U. (2021) Diagnostic accuracy of Twinkling Artifact in detection of nephrolithiasis with CT-KUB as Gold Standard. Rawal Medical Journal, 46 (4), 830-833.








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