Esophageal Cancer Clinical Trial
Official title:
Utility and Usability of ActivSight™ Laser Speckle Imaging in Visualization of Tissue Perfusion and Blood Flow During Esophageal Surgery in Humans
ActivSight™ combines an innovative form factor and proprietary software to deliver precise, objective, real-time visualization of blood flow and tissue perfusion intraoperatively for laparoscope-based surgery. A small adaptor that fits between any existing laparoscope and camera systems and a separate light source placed along any current commercial system will deliver objective real-time tissue perfusion and blood flow information intraoperatively. Primary Objective: To determine the feasibility of ActivSight™ in detecting and displaying tissue perfusion and blood flow in the conduit and foregut anastomoses in esophageal resection/reconstructive surgery. The investigators will compare the precision and accuracy among the naked eye inspection, ICG and LSCI in assessing the vascularity of the conduit.
Design: - This is a prospective interventional cross-over study where ActivSight™ will be used in sequence to the standard practice of visualizing perfusion status of the conduit using the naked eye visual inspection and ICG during esophageal resection. - Feasibility will be determined by technically successful completion of intended visualization. - Safety will be determined through clinical assessments and evaluation of any adverse event. - Assessment of preliminary efficacy will be performed through analysis of any intraoperative decisions made based on visual display as compared to standard endoscopic approach, or non-inferiority to ICG-based visualization and usability. - Patient outcome and follow up to Postoperative day 28 will be monitored for clinical outcome. - Target enrollment for the assessment of esophageal anastomoses is a total of seventy patients powered to detect ~ 2-3 cm discordance between ICG and LSCI lines of demarcation between well vascularized and less vascularized sites in the gastric conduit. Since ActivSight™ can detect the difference of > 2 cm between perfused versus less perfused in comparison to ICG with 80 % confidence at p<0.05 in a sample size of n = 21, the investigators estimate that the study will require an accrual of 63 patients. With potential unforeseen dropout and mortality, the investigators will recruit a total of 70 patients for the proposed study. ;
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