CEUS: A Promising Tool for Detecting Plaque Vulnerability and Neovascularization

Recent studies have highlighted the potential of contrast-enhanced ultrasound (CEUS) in assessing the vulnerability of plaques. CEUS allows for the detection of neovascularization within plaques, a key marker of vulnerability. Research suggests that the degree of enhancement observed in carotid artery plaques using CEUS is closely linked to the density of neovascularization within the plaque and the plaque's echo characteristics. Interestingly, the degree of carotid artery stenosis does not appear to be correlated with the degree of enhancement. This suggests that CEUS may provide unique information about plaque vulnerability beyond stenosis severity.

Further supporting its validity, studies have shown a good correlation between the semi-quantitative histological evaluation of surgical specimens and neovascularization detected by carotid plaque CEUS. Additionally, carotid artery plaque ultrasonography has demonstrated correlation with histological microvascular density in terms of spatial and temporal parameters. This spatial and temporal correlation further strengthens the case for CEUS as a reliable tool for assessing plaque vulnerability.

A meta-analysis has also suggested that contrast-enhanced ultrasound is a promising non-invasive method for detecting neovascularization within plaques. This non-invasive nature is a significant advantage, as it allows for repeat examinations over time to monitor plaque progression and the effectiveness of interventions. In conclusion, CEUS is emerging as a valuable tool for assessing plaque vulnerability by detecting neovascularization, potentially aiding in stroke risk prediction and management.