Figure 7

Percent reduction in viable tumor on follow-up MRI across tumors. Within viable tumor tissue on baseline MRI, areas of increasing Lipiodol density tend to become necrotic at a higher rate (p = 0.0008 for mid density Lipiodol vs. low density Lipiodol; p = 0.0051 for high density vs mid density Lipiodol). The percentages shown in the graph are averages of the individual percentages of voxels in each tumor that are viable or necrotic. Areas of the tumor are only included in the analysis if they contain at least 50 voxels.