找出句中的错误：CEUS confirmed the unenhanced floating thrombus at the distal end of the plaquewhich was confirmed by CTA and DSA Additionally CEUS also revealed small ulcers and abundant neovascularization w

找出句中的错误：CEUS confirmed the unenhanced floating thrombus at the distal end of the plaque，which was confirmed by CTA and DSA. Additionally, CEUS also revealed small ulcers and abundant neovascularization within the plaque that were not visible on routine ultrasound.

句中没有明显的错误。