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Box plots of IC (A), NIC (B) and λHU (C) for the 3 groups of tumors. The IC, NICA and λHU of WTs are significantly higher than those of MTs and PAs. Inter-group comparison is performed with the LSD method. IC, iodine concentration; NICA, normalized iodine concentration to common carotid artery; WTs, Warthin tumors; MTs, malignant tumors; PAs, pleomorphic adenomas; LSD, least significant difference.
