Exclusion of urolithiasis in the presence of contrast media using dual energy
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Case history: 45-year-old female with cholangiocellular carcinoma and known peritoneal carcinosis presents for follow-up scan post surgery and post chemotherapy. Question: Can virtual non-enhanced imaging confirm the presence of a small renal stone in the lower pole of the right kidney found incidentally? Read more
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![[1] Conventional 5 mm axial image of the lower pole of the kidneys. In the right kidney, the hyperenhancing area could be a calcified nodule.](http://www.dsct.com/wp-content/uploads/2009/04/exclusion-of-urolithiasis-in-the-presence-of-contrast-media-using-dual-energy-11-150x150.jpg "exclusion-of-urolithiasis-in-the-presence-of-contrast-media-using-dual-energy-11")
![exclusion-of-urolithiasis-in-the-presence-of-contrast-media-using-dual-energy-2[2] High resolution coronal reconstruction displays a nodular hyperenhancing nodule.](http://www.dsct.com/wp-content/uploads/2009/04/exclusion-of-urolithiasis-in-the-presence-of-contrast-media-using-dual-energy-2-150x150.jpg "exclusion-of-urolithiasis-in-the-presence-of-contrast-media-using-dual-energy-2")
![[3] High resolution sagittal reconstruction confirms the presence of a nodular hyperenhancing nodule, making the diagnosis of a renal calculus likely.](http://www.dsct.com/wp-content/uploads/2009/04/exclusion-of-urolithiasis-in-the-presence-of-contrast-media-using-dual-energy-3-150x150.jpg "exclusion-of-urolithiasis-in-the-presence-of-contrast-media-using-dual-energy-3")
![[4] Virtual non-enhanced analysis shows that the major component of the nodular formation is iodine, which is no longer present in the virtual non-enhanced image.](http://www.dsct.com/wp-content/uploads/2009/04/exclusion-of-urolithiasis-in-the-presence-of-contrast-media-using-dual-energy-4-150x150.jpg "exclusion-of-urolithiasis-in-the-presence-of-contrast-media-using-dual-energy-4")
Protocol Dual Energy for the evaluation of urolithiasis
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Please, click on the title to see the protocol. Read more
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DSCT for Evaluation of Urolithiasis
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History A 34 year-old female (A) and a 55 year-old male (B) patient were both referred for MDCT evaluation of a known urinary calculi. A non-enhanced MDCT scan of the abdomen was performed on the Dual Source CT (DSCT) using spiral Dual Energy evaluation. Diagnosis The Dual Energy acquisition allowed not only a … Read more
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Dual Energy CT – Renal Stone Composition
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The following question has been sent by Dr. Ravi Mahal, Radiologist, Boca Radiology Group, USA: We have been using the DECT for Urinary stone composition for the past 6 months. Recently I had a case where a patient had 2 stones of different compositions; a right uric acid stone and a … Read more
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Utilization of Dual Energy CT to Characterize Renal Stones and Effects on Patient Management
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The following study was presented at the UBC Radiology Scientific Day, June 2008 & Stanford Radiology’s 10 th Annual International Symposium on Multidetector CT In May 2008. Purpose: To investigate whether DECT can accurately determine composition of renal calculi at acceptable dose. To observe how this information changes patient management in the … Read more
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ECR 2008: Thorsten R.C. Johnson, M.D., on the potential of dual energy
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Urinary stone-characterization with Dual Energy
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The following question has been sent by Luke Riverstone, Radiographer, Qscan Radiology Clinics, Australia: We have recently obtained a Siemens DSCT. We performed our first DE KUB the other day and the Dual Energy Software indicated that there was 1 Kidney stone that was of a Uric Acid composition and 1 was … Read more
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