Clinical Microendoscopy for the Mapping of Tumor Margins using a Support Template for Near-Continuous Imaging
Date of Graduation
Bachelor of Science
Muldoon, Timothy J
Committee Member/Second Reader
Committee Member/Third Reader
Colorectal cancer is the second leading cause of cancer related death in the United States, and the third most common cancer in men and women. This disease is largely asymptomatic and goes unnoticed until the disease has progressed to a later stage. The conventional method of screening and diagnosis of colorectal cancer is white light colonoscopy with biopsy. This technique, although very effective, is limited to the observation of reflected visible light from the mucosal surface of the tissue. As such, regions of occult dysplasia cannot be observed using this diagnostic tool. Hence, this limitation has led to the need for an adjunct tool to allow visualization of abnormal cells before they grow into large polyps. Therefore, the clinical microendoscope was developed for the visualization of cells on the epithelial layer to provide physicians with a procedure for early screening of suspicious lesions, and point-of-care assessment to delineate tumor margins prior to surgical resection of adenocarcinomas. This system was approved for imaging surgically resected colon tissue at the University of Arkansas for Medical Sciences. In order to obtain high-resolution images, an acrylic support template was designed to stabilize the fiber optic image guide in order to allow an increased exposure time and an improved signal-to-noise ratio. Once images were obtained, any changes in the glandular appearance were correlated to histopathology slides that were acquired from the precise location of imaging on the tissue. Image mosaicking was also carried out in order to obtain a wider field-of-view for analysis of regions of occult dysplasia.
Soobhanath, C. M. (2015). Clinical Microendoscopy for the Mapping of Tumor Margins using a Support Template for Near-Continuous Imaging. Biological Sciences Undergraduate Honors Theses Retrieved from https://scholarworks.uark.edu/biscuht/9