Colorectal neoplasm detection using virtual colonoscopy: a feasibility study
نویسندگان
چکیده
منابع مشابه
Colorectal neoplasm detection using virtual colonoscopy: a feasibility study.
BACKGROUND Virtual colonoscopy is a potentially powerful tool for non-invasive colorectal evaluation. In vitro studies have established its accuracy in simulated polyp detection but little data exist regarding its use in clinical practice. AIMS To evaluate the ability of virtual colonoscopy to detect colorectal cancers and polyps in patients with endoscopically proven colorectal neoplasms and...
متن کاملComputed tomographic colonography (virtual colonoscopy): a multicenter comparison with standard colonoscopy for detection of colorectal neoplasia.
CONTEXT Conventional colonoscopy is the best available method for detection of colorectal cancer; however, it is invasive and not without risk. Computed tomographic colonography (CTC), also known as virtual colonoscopy, has been reported to be reasonably accurate in the diagnosis of colorectal neoplasia in studies performed at expert centers. OBJECTIVE To assess the accuracy of CTC in a large...
متن کاملAppropriateness of colonoscopy indication for colorectal neoplasm detection in patients under 50 years old with hematochezia
Objective: Evaluate the appropriateness of colonoscopy indication for neoplastic lesion detection in patients under age 50 with hematochezia. Methods: Retrospective and cross-sectional study in patients who underwent colonoscopy, from 2002 to 2009. Inclusion criteria included patients with hematochezia over 20 years old. Exclusion criteria were: history of inflammatory bowel disease (IBD), poly...
متن کاملVirtual colonoscopy in stenosing colorectal cancer
BACKGROUND Between 5 and 10% of the patients undergoing a colonoscopy cannot have a complete procedure mainly due to stenosing neoplastic lesion of rectum or distal colon. Nevertheless the elective surgical treatment concerning the stenosis is to be performed after the pre-operative assessment of the colonic segments upstream the cancer. The aim of this study is to illustrate our experience wit...
متن کاملUsing Optical Flow Fields for Polyp Detection in Virtual Colonoscopy
Since the introduction of Computed Tomographic Colonography (CTC), research has mainly focused on visualization and navigation techniques. Recently, efforts have shifted towards computer aided detection (CAD) of polyps. We propose a new approach to CAD in CT images that attempts to model the way a radiologist recognizes a polyp using optical flow fields (OFF). Features extracted from OFFs are u...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Gut
سال: 1998
ISSN: 0017-5749,1468-3288
DOI: 10.1136/gut.43.6.806