Diagnostic performance of abbreviated gadoxetic acid-enhanced magnetic resonance protocols with contrast-enhanced computed tomography for detection of colorectal liver metastases

Figure 6 A 70-year-old man with colorectal liver metastasis (not shown) and a hepatic hemangioma in segment 7, which is 4 mm in diameter (arrowheads). A: The hemangioma (arrowhead) is clearly depicted as an area of hyperintensity on single-shot fast spin echo T2-weighted imaging; B: The hemangioma (arrowhead) is clearly depicted as an area of hyperintensity on fat-suppressed fast spin echo T2-weighted imaging; C: The hemangioma (arrowhead) is clearly depicted as an area of hyperintensity on diffusion-weighted imaging; D: The hemangioma (arrowhead) is clearly depicted as an area of hypointensity on hepatobiliary-phase imaging; E: The characteristic early enhancement accompanying arterio-portal shunt of hemangioma (arrowhead) is depicted on arterial phase magnetic resonance (MR) image; F: The characteristic prolonged enhancement of hemangioma (arrowhead) is depicted on equilibrium phase computed tomography (CT) image. The lesion was incorrectly scored 4 by two readers in abbreviated enhanced magnetic resonance imaging (Ab-MRI) protocol 1, and was scored 4 or 5 by two readers in Ab-MRI protocol 2. The lesion was scored 1 by all four readers in standard MR protocol and the combination of each Ab-MRI and contrast-enhanced CT.