Dataset Information

Prospective evaluation of interobserver diagnostic agreement for focal urinary bladder wall abnormalities detected by ultrasound.

ABSTRACT:

Introduction

The interobserver variability of the sonographic assessment of Focal Bladder Wall Abnormalities (FBWA) between two physicians with different levels of experience was evaluated prospectively.

Materials and methods

In the same session the two operators examined independently the urinary bladder of 87 consecutive patients (Mean Age 68 yrs; range 33-80; 75 Males; 15 Females) who underwent cystoscopy within 1-2 days. Before beginning the study, the two observers standardized the process for US exam. Weighted kappa statistics were used to determine the degree of agreement as to the presence, size, location and number of FBWA detected at cystoscopy.

Results

the highest level of agreement (k = 1) was reached on the presence of FBWA, whereas a substantial agreement was reached on size (k = 0.78), number (k = 0.72) and location (k = 0.62) of FBWA.

Conclusions

In this study the gap in US experience between two operators did not emerge in assessing FBWA, provided a standardized technical approach is pursued.

SUBMITTER: Francica G

PROVIDER: S-EPMC3558040 | biostudies-literature | 2011 Mar

REPOSITORIES: biostudies-literature

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Publications

Prospective evaluation of interobserver diagnostic agreement for focal urinary bladder wall abnormalities detected by ultrasound.

Francica G G Scarano F F Bellini S A SA Miragliuolo A A

Journal of ultrasound 20101203 1

<h4>Introduction</h4>The interobserver variability of the sonographic assessment of Focal Bladder Wall Abnormalities (FBWA) between two physicians with different levels of experience was evaluated prospectively.<h4>Materials and methods</h4>In the same session the two operators examined independently the urinary bladder of 87 consecutive patients (Mean Age 68 yrs; range 33-80; 75 Males; 15 Females) who underwent cystoscopy within 1-2 days. Before beginning the study, the two observers standardiz ...[more]

PMID: 23397005

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Project description:ObjectiveTo evaluate interobserver agreement for the assessment of local tumor extension in women with cervical cancer, among experienced and less experienced observers, using transvaginal ultrasound (TVS) and magnetic resonance imaging (MRI).MethodsThe TVS observers were all gynecologists and consultant ultrasound specialists, six with and seven without previous experience in cervical cancer imaging. The MRI observers were five radiologists experienced in pelvic MRI and four less experienced radiology residents without previous experience in MRI of the pelvis. The less experienced TVS observers and all MRI observers underwent a short basic training session in the assessment of cervical tumor extension, while the experienced TVS observers received only a written directive. All observers were assigned the same images from cervical cancer patients at all stages (n = 60) and performed offline evaluation to answer the following three questions: (1) Is there a visible primary tumor? (2) Does the tumor infiltrate > ⅓ of the cervical stroma? and (3) Is there parametrial invasion? Interobserver agreement within the four groups of observers was assessed using Fleiss kappa (κ) with 95% CI.ResultsExperienced and less experienced TVS observers, respectively, had moderate interobserver agreement with respect to tumor detection (κ (95% CI), 0.46 (0.40-0.53) and 0.46 (0.41-0.52)), stromal invasion > ⅓ (κ (95% CI), 0.45 (0.38-0.51) and 0.53 (0.40-0.58)) and parametrial invasion (κ (95% CI), 0.57 (0.51-0.64) and 0.44 (0.39-0.50)). Experienced MRI observers had good interobserver agreement with respect to tumor detection (κ (95% CI), 0.70 (0.62-0.78)), while less experienced MRI observers had moderate agreement (κ (95% CI), 0.51 (0.41-0.62)), and both experienced and less experienced MRI observers, respectively, had good interobserver agreement regarding stromal invasion (κ (95% CI), 0.80 (0.72-0.88) and 0.71 (0.61-0.81)) and parametrial invasion (κ (95% CI), 0.69 (0.61-0.77) and 0.71 (0.61-0.81)).ConclusionsWe found interobserver agreement for the assessment of local tumor extension in patients with cervical cancer to be moderate for TVS and moderate-to-good for MRI. The level of interobserver agreement was associated with experience among TVS observers only for parametrial invasion. © 2021 The Authors. Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of International Society of Ultrasound in Obstetrics and Gynecology.

Dataset Information

Prospective evaluation of interobserver diagnostic agreement for focal urinary bladder wall abnormalities detected by ultrasound.

Introduction

Materials and methods

Results

Conclusions

Publications

Prospective evaluation of interobserver diagnostic agreement for focal urinary bladder wall abnormalities detected by ultrasound.

Similar Datasets

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