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Contrast-enhanced ultrasound of the kidneys: principles and potential applications

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Abstract

Contrast-enhanced ultrasound (CEUS) is an extension and an enhanced form of ultrasound that allows real-time evaluation of the various structures in different vascular phases. The last decade has witnessed a widespread expansion of CEUS applications beyond the liver. It has shown fair potential in kidneys and its diagnostic efficacy is comparable to CT and MRI. Ultrasound is the well-accepted screening modality for renal pathologies, however, it underperforms in the characterization of the renal masses. CEUS can be beneficial in such cases as it can help in the characterization of such incidental masses in the same sitting. It has an excellent safety profile with no risk of radiation or contract-related nephropathy. It can aid in the correct categorization of renal cysts into one of the Bosniak classes and has proven its worth especially in complex cysts or indeterminate renal masses (especially Bosniak Category IIF and III). Few studies also describe its potential role in solid masses and in differentiating benign from malignant masses. Other areas of interest include infections, infarctions, trauma, follow-up of local ablative procedures, and VUR. Through this review, the readers shall get an insight into the various applications of CEUS in kidneys, with imaging examples.

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  1. Department of Radiology, VMMC & Safdarjung Hospital, New Delhi, India

    Ankita Aggarwal

  2. Department of Radiodiagnosis and Interventional Radiology, AIIMS, New Delhi, India

    Sneha Goswami & Chandan J. Das

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  1. Ankita Aggarwal
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Aggarwal, A., Goswami, S. & Das, C.J. Contrast-enhanced ultrasound of the kidneys: principles and potential applications. Abdom Radiol 47, 1369–1384 (2022). https://doi.org/10.1007/s00261-022-03438-z

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