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GIUSEPPE BRANCATELLI

Focal liver lesions hyperintense on T1-weighted magnetic resonance images.

  • Authors: Furlan, A; Marin, D; Bae, KT; Lagalla, R; Agnello, F; Bazzocchi, M; Brancatelli, G
  • Publication year: 2009
  • Type: Articolo in rivista (Articolo in rivista)
  • Key words: Liver, Magnetic resonance, focal lesions
  • OA Link: http://hdl.handle.net/10447/46893

Abstract

This article reviews focal liver lesions hyperintense on T1-weighted magnetic resonance (MR) images and describes the underlying etiologies associated with their T1 signal intensity. Although focal liver lesions are commonly detected because of their iso- or hypointensity on T1-weighted images, lesions (benign or malignant) may present with T1 hyperintensity when they contain T1 shortening elements--such as fat, hemorrhage, copper, melanin, and highly concentrated proteins. Our discussion includes the description of state-of-the-art T1-weighted MR sequences and the imaging features of lesions on pre- and postcontrast MR images that are characteristic for lesion composition and useful for making accurate diagnosis.