Clinical Research Directory

Photon-Counting CT for Detection of Small Gastrointestinal Lesions

This comparative matched-cohort study aims to evaluate the diagnostic performance of contrast-enhanced photon-counting computed tomography (PCCT) for detecting small gastrointestinal lesions compared with energy-integrating detector dual-energy computed tomography (DECT). The study includes a prospectively enrolled PCCT cohort and a retrospectively identified DECT cohort. Endoscopy with histopathology serves as the reference standard. Primary evaluation focuses on lesion detection, with additional assessment of lesion characterization, image quality, quantitative imaging parameters, and interobserver agreement.

EUS-Guided Ablation (RFA and MWA) for Pancreatic and Other Gastrointestinal Lesions Registry

This is a single-center, investigator-initiated, prospective observational registry that will collect longitudinal clinical data on adult patients (≥18 years) undergoing endoscopic ultrasound (EUS)-guided radiofrequency ablation (RFA) or microwave ablation (MWA) for pancreatic and other gastrointestinal/hepatobiliary lesions as part of routine clinical care. The registry will not alter standard-of-care management. Data will be abstracted from the medical record and routine clinical systems. Primary outcomes include change in target lesion size on clinically obtained imaging and overall survival following ablation. Secondary outcomes include changes in tumor biomarkers, adverse events, non-target lesion changes, and patient-reported symptoms.

Endoscopic Submucosal Dissection (ESD)

This registry is to evaluate the procedural and clinical outcomes in patients undergoing endoscopic submucosal dissection. All patients will receive standard of medical care and no experimental interventions will be performed.