نتایج جستجو برای: polyp detection rate

تعداد نتایج: 1479463  

سیدموسی صدرحسینی, , علیرضا محبی, ,

Sphenochoanal poyp is rare nasal mass that originates from sphenoid sinus. In anterior rhinoscopy it may be mistaken with antrochoanal polyp. CT of paranasal sinuses and nasal endoscopy has increased diagnostic accuracy. Simple polypectomy without removal of intra sinus mass is associated with increased risk of recurrence. ‏Treatment of sphenochoanal polyp must include removal of intrasphenoid...

2007
Dongqing Chen Aly A. Farag M. Sabry Hassouna Robert Falk

An automatic polyp detection framework is presented based on surface curvatures, and a new color coding scheme is used to highlight the detected polyps which enhances the visualization. An accurate estimate for the surface curvature together with three geometric features is used to detect the polyps. We place the detected polyps inside a polygonal dataset with exactly the same topology and geom...

2017
Christine M Zupanc Guy M Wallis Andrew Hill Robin Burgess-Limerick Stephan Riek Annaliese M Plooy Mark S Horswill Marcus O Watson Hans de Visser David Conlan David G Hewett

BACKGROUND The effectiveness of colonoscopy for diagnosing and preventing colon cancer is largely dependent on the ability of endoscopists to fully inspect the colonic mucosa, which they achieve primarily through skilled manipulation of the colonoscope during withdrawal. Performance assessment during live procedures is problematic. However, a virtual withdrawal simulation can help identify and ...

Journal: :global journal of environmental science and management 2015
j. aravind t. saranya p. kanmani

inorganic polyphosphates (polyp) are linear polymers of few to several hundred orthophosphate residues, linked by energy-rich phosphoanhydride bonds. four isolates had been screened from soil sample. by maldi-tof analysis, they were identified as bacillius cereus, acinetobacter towneri, b. megaterium and b. cereus. the production of polyp in four isolates was studied in phosphate uptake medium ...

Journal: :Biomedical Signal Processing and Control 2022

Synthetic polyp generation is a good alternative to overcome the privacy problem of medical data and lack various samples. In this study, we propose deep learning-based image framework that generates synthetic images are similar real ones. We suggest converts given into negative (image without polyp) using simple conditional GAN architecture then new-looking same network. addition, by controlla...

2011
Matthias Breier Sebastian Gross Alexander Behrens Thomas Stehle

Colon cancer is the third most common type of cancer in the United States of America. Every year about 140,000 people are newly diagnosed with colon cancer. Early detection is crucial for a successful therapy. The standard screening procedure is called colonoscopy. Using this endoscopic examination physicians can find colon polyps and remove them if necessary. Adenomatous colon polyps are deeme...

2017
Ashkan Zarandi Shiva Irani Sanaz Savabkar Vahid Chaleshi Maryam Ghavideldarestani Reza Mirfakhraie Mahsa Khodadoostan Ehsan Nazemalhosseini-Mojarad Hamid Asadzadeh Aghdaei

Aim The aim of this study was to evaluate the methylation status of the promoter region of MLH1 gene in colorectal cancer (CRC) and its precursor lesions as well as elucidate its association with various clinicopathological characteristics among Iranian population. Background Epigenetic silencing of mismatch repair genes, such as MLH1, by methylation of CpG islands of their promoter region ha...

2010
Feng Qiu Joseph Marino Arie Kaufman

We present a novel pipeline for computer-aided detection (CAD) of colonic polyps by integrating texture analysis with volume rendering and conformal colon flattening. Using our method, the 3D polyp automatic detection problem is converted into a 2D image analysis problem. The colon surface is first segmented and extracted from the CT data set of the abdomen, which is then mapped to a 2D rectang...

Journal: :basic and clinical neuroscience 0
fatemeh es'haghi microelectronic&microsensor lab., electrical and computer engineering department, university of tabriz, tabriz, iran parviz shahabi school of advanced medical science, tabriz university of medical sciences, tabriz, iran javad frounchi microelectronic&microsensor lab., electrical and computer engineering department, university of tabriz, tabriz, iran mina sadighi neuroscience research center, tabriz university of medical sciences, tabriz, iran hadi yousefi neuroscience research center, tabriz university of medical sciences, tabriz, iran

introduction: seizures are symptoms associated with abnormal electrical activity in electroencephalogram (eeg). the present study was designed to determine the effect of absence seizure on heart rate (hr) changes in electrocardiogram (ecg). methods: hr alterations were recorded simultaneous with spike and wave discharges (swd) by eeg in 6 wag/rij rats as a well characterized and validated genet...

2012
Arup Sen Gupta Aloke Bose Majumdar Ranabir Pal Shrayan Pal

Sphenochoanal polyp is a rare entity which originates from the sphenoid sinus and passes via the sphenoid ostium to the choana and presents like the more frequently occurring antrochoanal polyp. The authors reported the case of a 22-year-old woman who was diagnosed with a left sphenochoanal polyp that is a relatively uncommon entity. If unrecognized they can be mistaken for an antrochoanal poly...

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