AIM: To investigate a classification of endocytoscopy (ECS) images in Barrett’s esophagus (BE) and evaluate its diagnostic performance and interobserver variability.
BACKGROUND Hepatocellular carcinoma is the most common primary liver malignancy.From the results of previous studies,Liver Imaging Reporting and Data System(LIRADS)on contrast-enhanced ultrasound(CEUS)has shown satisf...BACKGROUND Hepatocellular carcinoma is the most common primary liver malignancy.From the results of previous studies,Liver Imaging Reporting and Data System(LIRADS)on contrast-enhanced ultrasound(CEUS)has shown satisfactory diagnostic value.However,a unified conclusion on the interobserver stability of this innovative ultrasound imaging has not been determined.The present metaanalysis examined the interobserver agreement of CEUS LI-RADS to provide some reference for subsequent related research.AIM To evaluate the interobserver agreement of LI-RADS on CEUS and analyze the sources of heterogeneity between studies.METHODS Relevant papers on the subject of interobserver agreement on CEUS LI-RADS published before March 1,2020 in China and other countries were analyzed.The studies were filtered,and the diagnostic criteria were evaluated.The selected references were analyzed using the“meta”and“metafor”packages of R software version 3.6.2.RESULTS Eight studies were ultimately included in the present analysis.Meta-analysis results revealed that the summary Kappa value of included studies was 0.76[95%confidence interval,0.67-0.83],which shows substantial agreement.Higgins I2 statistics also confirmed the substantial heterogeneity(I2=91.30%,95%confidence interval,85.3%-94.9%,P<0.01).Meta-regression identified the variables,including the method of patient enrollment,method of consistency testing,and patient race,which explained the substantial study heterogeneity.CONCLUSION CEUS LI-RADS demonstrated overall substantial interobserver agreement,but heterogeneous results between studies were also obvious.Further clinical investigations should consider a modified recommendation about the experimental design.展开更多
背景与目的:随着前列腺多参数MR成像技术的发展,影像学在前列腺病灶诊断、恶性度评估及疗效评估等方面均表现出一定的临床意义。但扫描序列增多,且在前列腺不同区域、不同序列所占的权重并不一样,给临床工作带来了一定的负担,基于此基...背景与目的:随着前列腺多参数MR成像技术的发展,影像学在前列腺病灶诊断、恶性度评估及疗效评估等方面均表现出一定的临床意义。但扫描序列增多,且在前列腺不同区域、不同序列所占的权重并不一样,给临床工作带来了一定的负担,基于此基础上的第二版前列腺影像报告和数据系统(Prostate Imaging Reporting and Data System version 2,PI-RADS V2)应运而生。为推广PI-RADS V2,本研究就其对前列腺病灶评估的一致性及准确性进行探究。方法:回顾性分析98例符合PI-RADS V2评估要求并有病理资料的患者,共141个病灶。邀请两位不同年资的影像学医师独立评估病灶。采用kappa系数评估两名医师PI-RADS V2分类评分的一致性。利用受试者工作特征(receiver operating characteristic,ROC)曲线方法来分析两名医师诊断出Gleason score≥7的病灶的准确性,并分别计算出各ROC曲线的cut-off值来确定PI-RADS V2评分的最佳界值。结果:对于PI-RADS V2≥3分的病灶,两名医师对外周带病灶评估一致性较好(非外周带和外周带kappa值分别为0.668和0.769)。对于PI-RADS V2≥4分的病灶,其评估一致性更好(非外周带和外周带kappa值分别为0.710和0.843)。影像学医师1、2诊断出Gleason score≥7的病灶的ROC曲线的曲线下面积(area under curve,AUC)分别为0.816、0.792,且非外周带的AUC均比外周带的高(AUC1:0.886 vs 0.791;AUC2:0.791 vs 0.730)。另外,两名医师在评估外周带及非外周带病灶良恶性的最佳PI-RADS V2评分界值均为3分。结论:PI-RADS V2评价前列腺病灶具有较好的一致性及准确性。PI-RADS V2可能更适合非外周带病灶的评估,尚需进一步验证。展开更多
To establish consensual definitions of anoperineal lesions of Crohn’s (APLOC) disease and assess interobserver agreement on their diagnosis between experts. METHODSA database of digitally recorded pictures of APLOC w...To establish consensual definitions of anoperineal lesions of Crohn’s (APLOC) disease and assess interobserver agreement on their diagnosis between experts. METHODSA database of digitally recorded pictures of APLOC was examined by a coordinating group who selected two series of 20 pictures illustrating the various aspects of APLOC. A reading group comprised: eight experts from the Société Nationale Française de Colo Proctologie group of study and research in proctology and one academic dermatologist. All members of the coordinating and reading groups participated in dedicated meetings. The coordinating group initially conducted a literature review to analyse verbatim descriptions used to evaluate APLOC. The study included two phases: establishment of consensual definitions using a formal consensus method and later assessment of interobserver agreement on the diagnosis of APLOC using photos of APLOC, a standardised questionnaire and Fleiss’s kappa test or descriptive statistics. RESULTSTerms used in literature to evaluate visible APLOC did not include precise definitions or reference to definitions. Most of the expert reports on the first set of photos agreed with the main diagnosis but their verbatim reporting contained substantial variation. The definitions of ulceration (entity, depth, extension), anal skin tags (entity, inflammatory activity, ulcerated aspect), fistula (complexity, quality of drainage, inflammatory activity of external openings), perianal skin lesions (abscess, papules, edema, erythema) and anoperineal scars were validated. For fistulae, they decided to follow the American Gastroenterology Association’s guidelines definitions. The diagnosis of ulceration (κ = 0.70), fistulae (κ = 0.75), inflammatory activity of external fistula openings (86.6% agreement), abscesses (84.6% agreement) and erythema (100% agreement) achieved a substantial degree of interobserver reproducibility. CONCLUSIONThis study constructed consensual definitions of APLOC and their characteristics and showed that ex展开更多
文摘AIM: To investigate a classification of endocytoscopy (ECS) images in Barrett’s esophagus (BE) and evaluate its diagnostic performance and interobserver variability.
基金Supported by Health Commission of Hubei Province,China No.WJ2019M077 and No.WJ2019H227Natural Science Foundation of Hubei Province,China No.2019CFB286and Science and Technology Bureau of Shihezi,China No.2019ZH11.
文摘BACKGROUND Hepatocellular carcinoma is the most common primary liver malignancy.From the results of previous studies,Liver Imaging Reporting and Data System(LIRADS)on contrast-enhanced ultrasound(CEUS)has shown satisfactory diagnostic value.However,a unified conclusion on the interobserver stability of this innovative ultrasound imaging has not been determined.The present metaanalysis examined the interobserver agreement of CEUS LI-RADS to provide some reference for subsequent related research.AIM To evaluate the interobserver agreement of LI-RADS on CEUS and analyze the sources of heterogeneity between studies.METHODS Relevant papers on the subject of interobserver agreement on CEUS LI-RADS published before March 1,2020 in China and other countries were analyzed.The studies were filtered,and the diagnostic criteria were evaluated.The selected references were analyzed using the“meta”and“metafor”packages of R software version 3.6.2.RESULTS Eight studies were ultimately included in the present analysis.Meta-analysis results revealed that the summary Kappa value of included studies was 0.76[95%confidence interval,0.67-0.83],which shows substantial agreement.Higgins I2 statistics also confirmed the substantial heterogeneity(I2=91.30%,95%confidence interval,85.3%-94.9%,P<0.01).Meta-regression identified the variables,including the method of patient enrollment,method of consistency testing,and patient race,which explained the substantial study heterogeneity.CONCLUSION CEUS LI-RADS demonstrated overall substantial interobserver agreement,but heterogeneous results between studies were also obvious.Further clinical investigations should consider a modified recommendation about the experimental design.
文摘背景与目的:随着前列腺多参数MR成像技术的发展,影像学在前列腺病灶诊断、恶性度评估及疗效评估等方面均表现出一定的临床意义。但扫描序列增多,且在前列腺不同区域、不同序列所占的权重并不一样,给临床工作带来了一定的负担,基于此基础上的第二版前列腺影像报告和数据系统(Prostate Imaging Reporting and Data System version 2,PI-RADS V2)应运而生。为推广PI-RADS V2,本研究就其对前列腺病灶评估的一致性及准确性进行探究。方法:回顾性分析98例符合PI-RADS V2评估要求并有病理资料的患者,共141个病灶。邀请两位不同年资的影像学医师独立评估病灶。采用kappa系数评估两名医师PI-RADS V2分类评分的一致性。利用受试者工作特征(receiver operating characteristic,ROC)曲线方法来分析两名医师诊断出Gleason score≥7的病灶的准确性,并分别计算出各ROC曲线的cut-off值来确定PI-RADS V2评分的最佳界值。结果:对于PI-RADS V2≥3分的病灶,两名医师对外周带病灶评估一致性较好(非外周带和外周带kappa值分别为0.668和0.769)。对于PI-RADS V2≥4分的病灶,其评估一致性更好(非外周带和外周带kappa值分别为0.710和0.843)。影像学医师1、2诊断出Gleason score≥7的病灶的ROC曲线的曲线下面积(area under curve,AUC)分别为0.816、0.792,且非外周带的AUC均比外周带的高(AUC1:0.886 vs 0.791;AUC2:0.791 vs 0.730)。另外,两名医师在评估外周带及非外周带病灶良恶性的最佳PI-RADS V2评分界值均为3分。结论:PI-RADS V2评价前列腺病灶具有较好的一致性及准确性。PI-RADS V2可能更适合非外周带病灶的评估,尚需进一步验证。
文摘To establish consensual definitions of anoperineal lesions of Crohn’s (APLOC) disease and assess interobserver agreement on their diagnosis between experts. METHODSA database of digitally recorded pictures of APLOC was examined by a coordinating group who selected two series of 20 pictures illustrating the various aspects of APLOC. A reading group comprised: eight experts from the Société Nationale Française de Colo Proctologie group of study and research in proctology and one academic dermatologist. All members of the coordinating and reading groups participated in dedicated meetings. The coordinating group initially conducted a literature review to analyse verbatim descriptions used to evaluate APLOC. The study included two phases: establishment of consensual definitions using a formal consensus method and later assessment of interobserver agreement on the diagnosis of APLOC using photos of APLOC, a standardised questionnaire and Fleiss’s kappa test or descriptive statistics. RESULTSTerms used in literature to evaluate visible APLOC did not include precise definitions or reference to definitions. Most of the expert reports on the first set of photos agreed with the main diagnosis but their verbatim reporting contained substantial variation. The definitions of ulceration (entity, depth, extension), anal skin tags (entity, inflammatory activity, ulcerated aspect), fistula (complexity, quality of drainage, inflammatory activity of external openings), perianal skin lesions (abscess, papules, edema, erythema) and anoperineal scars were validated. For fistulae, they decided to follow the American Gastroenterology Association’s guidelines definitions. The diagnosis of ulceration (κ = 0.70), fistulae (κ = 0.75), inflammatory activity of external fistula openings (86.6% agreement), abscesses (84.6% agreement) and erythema (100% agreement) achieved a substantial degree of interobserver reproducibility. CONCLUSIONThis study constructed consensual definitions of APLOC and their characteristics and showed that ex
