Urinary system imaging (dual-energy CT)

Last revised by Andrew Murphy ◉ on 23 Mar 2023

Citation, DOI, disclosures and article data

Citation:

Murphy A, Haouimi A, Urinary system imaging (dual-energy CT). Reference article, Radiopaedia.org (Accessed on 31 May 2023) https://doi.org/10.53347/rID-66313

DOI:

https://doi.org/10.53347/rID-66313

Permalink:

https://radiopaedia.org/articles/66313

rID:

66313

Article created:

14 Feb 2019, Andrew Murphy ◉

Disclosures:

At the time the article was created Andrew Murphy had no recorded disclosures.

View Andrew Murphy's current disclosures

Last revised:

23 Mar 2023, Andrew Murphy ◉

Disclosures:

At the time the article was last revised Andrew Murphy had no financial relationships to ineligible companies to disclose.

View Andrew Murphy's current disclosures

Revisions:

4 times, by 2 contributors - see full revision history and disclosures

Sections:

Radiography

Tags:

cases

Dual-energy CT has a number of clinical applications in the assessment of the urinary system particularly in the realm of artifact reduction and material composition

Renal stone composition

Renal calculi are composed of different substances such as uric acid, calcium phosphate, calcium oxalate, cystine, and brushite. Clinical management varies by stone type. Dual-energy CT uses advanced post-processing techniques to determine the composition of the calculi accurately ^1-3 . For example, if a stone is predominantly made up of uric acid, patients can undergo standard urinary alkalinization rather than have an interventional procedure ⁴.

Pseudoenhancement of renal cysts

Virtual monoenergetic images ranging from 80 to 90 KeV created from dual energy data sets can be created to overcome beam hardening and partial volume of indeterminate renal masses. This can be performed retrospectively and act as a useful tool when assessing for pseudoenhancement of renal cysts ^5,6.