Identification of neovascularization by contrast–enhanced ultrasound to detect unstable carotid stenosis
Fig 2
Grades of intraplaque neovascularization as assessed by contrast–enhanced ultrasound (CEUS).
The arrows indicate specific plaque characteristics. (A) Grade II: very low diffuse enhancement, no focal intraplaque enhancement. (B) Grade III: clear focal plaque shoulder enhancement in proximal part of carotid plaque. (C) Grade IV: clear focal plaque shoulder enhancement (blue arrow) with strong diffuse intraplaque enhancement in an additional region (red arrow).