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Figure 11a.   Esophageal varix and splenorenal shunt in a patient with liver cirrhosis. (a) Portal-phase dynamic subtraction MR angiogram obtained with a single injection of 0.1 mmol/kg of gadopentetate dimeglumine shows an esophageal varix (arrows) and splenorenal shunt (arrowheads), which are not clearly seen due to superimposition of the enhanced abdominal aorta. (b) MR portogram obtained by using double subtraction clearly shows the portal venous system (open arrows), along with the esophageal varix (solid arrows) and splenorenal shunt (arrowheads). (Reprinted, with permission, from reference 24.)