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. 2000 Feb;21(2):421–425.

graphic file with name ajnr-21-02-30-f01.jpg

Fig 1. Enhancement in the right and left insula after injection of 50 mL iodinated contrast agent before and after carotid revascularization.

A, Before revascularization there is considerable delayed and attenuated enhancement in the right insula compared with the left.

B, After treatment, this differerence is resolved and the contrast agent transit curves are symmetrical.