“…Recent advances in molecular imaging technology for tumors, research on the prognosis of oncogenesis, tumor angiogenesis, and reactions to reveal tumor vascularity and structure have attracted significant attention. 1,2 Due to the advantages of being noninvasive, real-time, and absence of radiation, ultrasound molecular imaging has been considered as a promising diagnostic technique. Nonetheless, conventional ultrasound has limited ability to detect blood flow owing to blood being a poor ultrasound scatterer, remaining dark in an echo image.…”