ERBB2 and cancer: The authors found that VMI 40 keV of delayed phase yielded the highest conspicuity and attenuation values for cancers with the greatest AUC (AUC 0.817); however, attenuation values and conspicuity scores were significantly higher on arterial phase in HER-2 Enriched and Triple Negative subtypes (high histologic grade, ER -, PgR -, HER-2 + and Ki67 high).