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Two-dimensional spatiotemporal distribution over time of needle injections, 4 mL POL22 with iodine at 10 mL/h in ex vivo bovine liver. The surface contours of the volumes at 1 mL increments (1, 2, 3, and 4 mL total injected volumes) based on cone beam CT are superimposed. Four needles were used: SEHN, MSHN, MPIN deployed 1cm (MPIN-1cm) and deployed 2cm (MPIN-2cm) (a) POL22 with iodine. (b) Iodine alone. White arrow depicts leakage.
