Utility and Usability of ActivSight™ Laser Speckle Imaging in Visualization of Tissue Perfusion and Blood Flow During Esophageal Surgery in Humans

INCLUSION CRITERIA

All patients age \> 18 years old undergoing laparoscopic esophageal resection and reconstruction surgery; spoken command and literacy in the native language spoken at each participating center; ability to understand and follow study procedures; and having provided signed consent.

Diagnosis:

* All patients with a clinical suspicion and diagnosis of benign or malignant, small or large bowel lesions requiring surgical resection.
* Typical imaging as per standard workup findings including US, CT and/or MRI. Plain radiographs and contrast imaging may be obtained by referring physicians and are helpful for confirming the clinical diagnosis.

Location of pathology or resected segment:

\* Target lesions can be located in any fore-, mid- or hindgut segments requiring reconstruction and anastomoses.

Prior therapy:

\* Patients with prior surgery are eligible for enrollment.

Laboratory:

* Hemoglobin \> 9 g/dL
* Platelet count ≥75,000/µL (may receive transfusions)
* Normal PT, PTT and INR \< 1.5 x ULN (including patients on prophylactic anticoagulation)
* Renal function: Age-adjusted normal serum creatinine derived from Schwartz formula for estimating GFR by the CDC OR a creatinine clearance ≥60 mL/min/1.73 m2 for safe
* Adequate pulmonary function: Defined as no dyspnea at rest, and a pulse oximetry \>94% on room air if there is clinical indication for determination.

EXCLUSION CRITERIA

* There is no exclusion criteria for ActivSightTM for esophageal surgery.
* Patients assigned to FDA cleared ICG-based visualization are contraindicated for any chronic renal dysfunction, potential drug interaction, history of allergy to ICG or anaphylaxis, known allergy to iodides, breast-feeding or being of reproductive age with pregnancy possible and not ruled out, and pregnancy.
* Patients currently in any investigational agents.