Fig 2.

Pyogenic abscess in the right frontal lobe of a 32-year-old man. A, Axial T2WI image shows a large well-defined hyperintense core with a peripheral hypointense rim, perifocal edema, and mass effect. B, The lesion shows mixed intensity on T1WI with a slightly hyperintense wall. C, Axial postcontrast T1WI shows ring enhancement. D, In vivo ¹H-MR spectroscopy by using SE sequence (TR/TE/NEX= 3000 ms/144 ms/128) from the center of the lesion shows Lip/Lac, 1.3 ppm; Ac, 1.9 ppm; and Suc, 2.4 ppm. Culture from pus grew E faecalis.