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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")
Scanning of a small polyp in gallbladder with dual energy
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Case history 66-year-old male presents with gallbladder lesion. Multiple MRI scans and ultrasound scans were not able to definitively conclude the nature of the lesion. Question Can CT differentiate between cholesterol rich gallstone and polyp? Could the … Read more
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