Contrast-enhanced Perfusion Measurements in Patients with Active Crohn's Disease Using Sonazoid.

Area of Science:

• Gastroenterology
• Medical Imaging
• Ultrasound Technology

Background:

• Crohn's disease is a chronic inflammatory bowel disease requiring accurate monitoring of disease activity.
• Current assessment methods may have limitations in differentiating disease severity.
• Dynamic contrast-enhanced ultrasound (DCE-US) offers a non-invasive approach to visualize tissue perfusion and vascularity.

Purpose of the Study:

• To evaluate the feasibility of DCE-US using Sonazoid in Crohn's disease patients.
• To determine the correlation between DCE-US parameters and Crohn's disease activity.
• To assess the ability of DCE-US to distinguish between remission/mild and moderate/severe disease activity.

Main Methods:

• A prospective study of 48 Crohn's disease patients undergoing colonoscopy and DCE-US with Sonazoid.
• Comparison of endoscopic scores with DCE-US parameters (peak enhancement, wash-in/wash-out AUC, rates, perfusion index).
• Analysis of two regions of interest: entire wall (ROI-1) and mucosa/submucosa (ROI-2).

Main Results:

• DCE-US examination feasibility was 73%.
• Normalized DCE-US parameters in both ROI-1 and ROI-2 significantly correlated with endoscopic disease activity.
• Parameters like peak enhancement and wash-in rate showed significant differences between mild and severe disease activity.

Conclusions:

• DCE-US parameters can effectively differentiate between remission/mild and moderate/severe Crohn's disease activity.
• The study highlights the potential of DCE-US as a valuable tool for disease assessment.
• Further research may be needed to improve the feasibility and standardization of the technique.