European Journal of Ultrasound

Frédéric Chantraine

B. Tutschek

Elodie Coudoux

Jean-Michel Foidart

Jean-Pierre Schaaps

Ultrasound assessment of the intima and media layers on the carotid arteries in peri- and postmenopausal women

围绝经期及绝经后女性颈动脉内膜和中膜层的超声评估

K. Tomsin

T. Mesens

Geert Molenberghs

L. Peeters

W. Gyselaers

Time-interval between maternal electrocardiogram and venous Doppler waves in normal pregnancy and pre-eclampsia: a pilot study

正常妊娠和先兆子痫中母体心电图与静脉多普勒波之间的时间间隔：一项初步研究

Michael Hareskov Larsen

Claus Wilki Fristrup

Michael Bau Mortensen

Intra- and interobserver agreement of endoscopic sonoelastography in the evaluation of lymph nodes

内镜超声弹性成像评估淋巴结的内、外观察者一致性

内镜超声弹性成像在淋巴结评估中的观察者间和观察者内一致性

内镜超声弹性成像评估淋巴结的观察者内和观察者间一致性

Purpose There is a lack of studies on the intra- and interobserver variability of endoscopic ultrasonography (EUS) and especially endoscopic sonoelastography (ES). The aim of this study was to evaluate the intra- and interobserver agreement of EUS and ES during the evaluation of a specific lymph node in patients with upper gastrointestinal malignancies (UGIM). The ES strain ratio was used to differentiate between benign and malignant lymph nodes and the interobserver agreement was evaluated. Materials and methods This study prospectively enrolled 62 patients with UGIM. EUS and ES were performed by two observers in randomized order of a specific lymph node using a linear Pentax echoendoscope and the Hitachi EUB-8500 US unit. The lymph node was classified as malignant or benign on the basis of EUS, ES, an ES scoring system, and 5 repeated strain ratio measurements. The intraobserver variation was evaluated by each observer performing 20 strain ratio measurements of the same lymph node. Finally, EUS fine needle aspiration was performed. The kappa statistic was used to test for interobserver variability. Results One patient was excluded due to inadequate ES imaging. Thus, 61 patients were included in the analysis of the interobserver agreement. Using EUS, ES, and an ES scoring system, the kappa values were 0.80, 0.58, and 0.35, respectively. An ES strain ratio of 3.81 was defined as the cut-off value between benign and malignant lymph nodes using cytology as the gold standard (n = 55). Using this modality, a kappa value of 0.59 was obtained. A t-test comparison of the measured strain ratios for the two observers found no significant differences. Conclusion ES and ES strain ratio evaluation of lymph nodes were feasible and may be reproduced with good interobserver agreement in a blinded clinical setup. The predefined ES scoring system provided only poor interobserver agreement. Image selection should be part of the intra- and interobserver evaluation. ES strain ratio seemed promising but larger studies are needed to evaluate this new feature.

Publication Information	Publisher: Elsevier B.V.，Publishing cycle: ，Journal Type: journal，Open Access Journals: No
Basic data	Year of publication: 1994，Proportion of original research papers: ，Self Citation Rate:， Gold OA Rate:

European Journal of Ultrasound

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Ultrasound assessment of the intima and media layers on the carotid arteries in peri- and postmenopausal women

Time-interval between maternal electrocardiogram and venous Doppler waves in normal pregnancy and pre-eclampsia: a pilot study

Intra- and interobserver agreement of endoscopic sonoelastography in the evaluation of lymph nodes

Ultrasound assessment of the intima and media layers on the carotid arteries in peri- and postmenopausal women

Time-interval between maternal electrocardiogram and venous Doppler waves in normal pregnancy and pre-eclampsia: a pilot study

Intra- and interobserver agreement of endoscopic sonoelastography in the evaluation of lymph nodes

Intra- and interobserver agreement of endoscopic sonoelastography in the evaluation of lymph nodes

Intra- and interobserver agreement of endoscopic sonoelastography in the evaluation of lymph nodes

Intra- and interobserver agreement of endoscopic sonoelastography in the evaluation of lymph nodes

Intra- and interobserver agreement of endoscopic sonoelastography in the evaluation of lymph nodes