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St. George's Hospital, London, U.K.

Angiomyolipoma diagnosed by using either region of interest density measurement or pixel mapping

Published in Medical Imaging Week, July 29th, 2006

Both region of interest (ROI) density measurement and pixel mapping could be used in diagnosing renal angiomyolipoma (AML).

Scientists in England conducted a study to "compare the diagnostic accuracy of ROI density measurement and pixel mapping [computed tomography (CT) density of individual pixels] for the diagnosis of AML using CT. A study group of histologically proven AMLs was compared with a control group of histologically proven renal cell cancers, normal renal parenchyma, and simple renal cysts. The mean tissue density (ROI circle) and a pixel density map were recorded."

"The diagnostic accuracy of various thresholds of ROI and pixel mapping...

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