|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Colometer:A real-time quality feedback system for screening colonoscopy显示文摘AIM:To investigate the performance of a new software-based colonoscopy quality assessment system.METHODS:The software-based system employs a novel image processing algorithm which detects the levels of image clarity,withdrawal velocity,and level of the bowel preparation in a real-time fashion from live video signal.Threshold levels of image blurriness and the withdrawal velocity below which the visualization could be considered adequate have initially been determined arbitrarily by review of sample colonoscopy videos by two experienced endoscopists.Subsequently,an overall colonoscopy quality rating was computed based on the percentage of the withdrawal time with adequate visualization(scored 1-5;1,when the percentage was 1%-20%;2,when the percentage was 21%-40%,etc.).In order to test the proposed velocity and blurriness thresholds,screening colonoscopy withdrawal videos from a specialized ambulatory colon cancer screening center were collected,automatically processed and rated.Quality ratings on the withdrawal were compared to the insertion in the same patients.Then,3 experienced endoscopists reviewed the collected videos in a blinded fashion and rated the overall quality of each withdrawal(scored 1-5;1,poor;3,average;5,excellent) based on 3 major aspects:image quality,colon preparation,and withdrawal velocity.The automated quality ratings were compared to the averaged endoscopist quality ratings using Spearman correlation coefficient.RESULTS:Fourteen screening colonoscopies were assessed.Adenomatous polyps were detected in 4/14(29%) of the collected colonoscopy video samples.As a proof of concept,the Colometer software rated colonoscope withdrawal as having better visualization than the insertion in the 10 videos which did not have any polyps(average percent time with adequate visualization:79% ± 5% for withdrawal and 50% ± 14% for insertion,P < 0.01).Withdrawal times during which no polyps were removed ranged from 4-12 min.The median quality rating from the automated system and the reviewers was 3.45 [interquartile range(IQR),3.1-3.68] and 3.00(IQR,2.33-3.67) respectively for all colonoscopy video samples.The automated rating revealed a strong correlation with the reviewer's rating(ρ coefficient= 0.65,P = 0.01).There was good correlation of the automated overall quality rating and the mean endoscopist withdrawal speed rating(Spearman r coefficient= 0.59,P = 0.03).There was no correlation of automated overall quality rating with mean endoscopists image quality rating(Spearman r coefficient= 0.41,P = 0.15).CONCLUSION:The results from a novel automated real-time colonoscopy quality feedback system strongly agreed with the endoscopists' quality assessments.Further study is required to validate this approach. | Dobromir Filip Xuexin Gao Leticia Angulo-Rodriguez Martin P Mintchev Shane M Devlin Alaa Rostom Wayne Rosen Christopher N Andrews | 2012 | World Journal of Gastroenterology2012，18，32： | 2 |
| 2 | Determination of Absolute Configuration Using Ab Initio Calculation of Optical Rotation显示文摘 | STEPHENS P J DEVLIN F J CHEESEMAN J R FRISCH M J | 2003 | Chirality2003，15，： | 1 |
| 3 | Morphology and the Internal Structure of Words 显示文摘 | DEVLIN J T JAMISON H L MATTHEWS P M | 2004 | Pro- ceedings of the National Academy of Sciences2004，101，14： | 1 |
| 4 | The bispectral index (BIS) as a hypnosis measure显示文摘 | Greenwald S Chiang HH Devlin P | 1994 | Anesthesiology1994，81，： | 1 |
| 5 | An Internet- ready database for prospective randomized clinical trials of high-dose-rate brachytherapy for adenocarcinoma of the pros- tate显示文摘 | DEVLIN P M BRUS C R KAZAKIN J | 2002 | Int J Radiat Oncol Biol Phys2002，53，1： | 1 |
| 6 | Kinetics of nitroaromatic reduction on granular iron in recirculating batch experiments显示文摘 | Devlin J F Klausen J Schwarzenbach R P | 1998 | Environ Sci Technol1998，32，13： | 1 |
| 7 | Kinetics of nitroaromatic reduction on granular iron in recirculating batch experiments 显示文摘 | Devlin J F Klausen J Schwarzenbach R P | 1998 | Environmental Science and Technology1998，32，13： | 1 |
| 8 | Calculation of Optical Rotation Using Density Functional Theory显示文摘 | STEPHENS P J DEVLIN F J CHESEMAN J R FRISH M J | 2001 | J Phys Chem A2001，105，： | 1 |
| 9 | Changes in IGFs in cardiac tissue following myocardial infarction显示文摘 | Matthews K G Devlin G P Conaglen J V | 1999 | J Endocrinol1999，163，3： | 1 |
| 10 | A performance evaluation of three drug-induced liver injury biomarkers in the rat:alpha-glutathione S-transferase,arginase 1,and 4-hydroxyphenyl-pyruvate dioxygenase显示文摘 | Bailey WJ Holder D Patel H Devlin P Gonzalez RJ Hamilton V | 2012 | Toxicol Sci2012，130，2： | 1 |
| 11 | American Brachytherapy Society recommends no change for prostate permanent implant dose prescrip- tions using iodine-125 or palladium-103显示文摘 | RIVARD M J BUTLER W M DEVLIN P M | 2007 | Brachy- therapy2007，6，： | 1 |
| 12 | A single-blind, cross-over trial of hip abductor strength training to improve Timed Up & Go performance in patients with unilateral,transfemoral amputation 显示文摘 | Pauley T Devlin M Madan-Sharma P | 2014 | J Rehabil Med2014，46，3： | 1 |
| 13 | Roles of different phytochromes in Arabidopsis photomorphogenesis 显示文摘 | Whitelam G C Devlin P | 1997 | Plant Cell Env1997，20，： | 1 |
| 14 | Effect of vitaminD receptor gene alleles on bone loss in early rheumatoid arthritis显示文摘 | Gough A Sambrook P Devlin J | 1998 | J Rheumatol1998，25，86： | 1 |
| 15 | Light signalling in Arobidopsis plant显示文摘 | Whitelam G C Devlin P F | 1998 | Physiol Biochem1998，36，12： | 1 |
| 16 | Signs of the time:environmental input to the circadian clock显示文摘 | DEVLIN P F | 2002 | J Exp Bot2002，53，374： | 1 |
| 17 | Inrtaoperative neurophysiologic monitoring: focus on cervical myelopathy and related issues显示文摘 | Devlin V J Anderson P A Schwartz D M | 2006 | Spine2006，6，14： | 1 |
| 18 | Phytochrome E influ- ences internode elongation and flowering time in Arabidop- sis显示文摘 | Devlin P F Patel S R Whitelam G C | 1998 | Plant Cell1998，10，9： | 1 |
| 19 | Phytochromes and cryptochromes in the entrainment of the Arabidopsis circadian clock显示文摘 | Somers D E Devlin P F Kay S A | 1998 | Scienec1998，282，5393： | 1 |
| 20 | Random peptide libraries: A source of specific protein binding molecules显示文摘 | Devlin J J Panganiban L C Devlin P E | 1990 | Science1990，249，27： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员