The Greulich-Pyle and Gilsanz-Ratib atlas method versus automated estimation tool for bone age: a multi-observer agreement study

2020 ◽  
Author(s):  
Ural Koc ◽  
Onur Taydaş ◽  
Semih Bolu ◽  
Atilla Halil Elhan ◽  
S. Pınar Karakas
Keyword(s):  
Bone Age ◽  
Observer Agreement ◽  
Atlas Method ◽  
Agreement Study

scholarly journals MRI in the classical MM1 and the atypical MV2 subtypes of sporadic CJD: an inter-observer agreement study

2008 ◽  
Vol 15 (8) ◽  
pp. 762-771 ◽  
Author(s):  
A. Krasnianski ◽  
K. Kallenberg ◽  
D. A. Collie ◽  
B. Meissner ◽  
W. J. Schulz-Schaeffer ◽  
...  
Keyword(s):  
Observer Agreement ◽  
Agreement Study ◽  
Sporadic Cjd

scholarly journals Comparison of SDSG and CARDS classifications for L5/S1 lumbar degenerative spondylolisthesis: An independent inter- and intra-observer agreement study

2020 ◽  
Author(s):  
Chongqing Xu ◽  
Mengchen Yin ◽  
Wen Mo
Keyword(s):  
Treatment Plan ◽  
Degenerative Spondylolisthesis ◽  
Observer Agreement ◽  
Common Disease ◽  
Low Back ◽  
K Value ◽  
Observer Reliability ◽  
Lumbar Degenerative Spondylolisthesis ◽  
Radicular Symptoms ◽  
Agreement Study

Abstract Background Lumbar degenerative spondylolisthesis (DS) has been a common disease that make increasing patients suffer from different degrees of low back pain and radicular symptoms. SDSG and CARDS systems are commonly used to classify the disease, and help to make a more detailed treatment plan. The objective of this study is to evaluate the reliability and reproducibility of SDSG and CARDS classifications, and to explore their clinical application value. Methods/Design: All 117 patients with L5/S1 lumbar DS were enrolled. 5 spine surgeons who have certain clinical experience were selected. They determined the classification according to S SDSG and CARDS systems, we used kappa (K) value to check the coefficient consistency for multi-factor and assess the inter- and intra-observer agreement. After 12 weeks, we repeated the analysis. Results The inter-observer reliability and intra-observer reproducibility of SDSG system were substantial with K values of 0.704 and 0.861, while those of CARDS system were substantial with values of 0.620 and 0.878. Conclusion SDSG system has better inter-observer reliability in comparison with CARDS system, and though CARDS system is more intuitive and simpler, it is more likely to produce deviations when using it. Since both SDSG and CARDS systems show substantial agreement and have great significance in surgical strategy of L5/S1 lumbar DS, they can be widely used in clinical practice.

scholarly journals Visual inspection of transvaginal ultrasound videos to characterize uterine peristalsis: an inter-observer agreement study

2019 ◽  
Vol 23 (1) ◽  
pp. 37-44
Author(s):  
N. P. M. Kuijsters ◽  
F. Sammali ◽  
C. Rabotti ◽  
Y. Huang ◽  
M. Mischi ◽  
...  
Keyword(s):  
Visual Inspection ◽  
Transvaginal Ultrasound ◽  
Observer Agreement ◽  
Agreement Study ◽  
Uterine Peristalsis

scholarly journals MRI KNEE BONE AGE: A NOVEL SHORTHAND APPROACH TO REDUCE BONE AGE RADIOGRAPHS IN CHILDREN

2020 ◽  
Vol 8 (4_suppl3) ◽  
pp. 2325967120S0018
Author(s):  
Blake C. Meza ◽  
Scott M. LaValva ◽  
Christopher J. DeFrancesco ◽  
Brendan M. Striano ◽  
Julien T. Aoyama ◽  
...  
Keyword(s):  
Radiation Exposure ◽  
Medical Training ◽  
Skeletal Maturity ◽  
Intraclass Correlation ◽  
Age Determination ◽  
Bone Age ◽  
Observer Agreement ◽  
Rater Reliability ◽  
Knee Mri ◽  
The Mean

Background: Determining bone age in skeletally immature patients is critical for proper management and surgical planning. Pennock et al. recently created and validated a bone age atlas using the ossification pattern of the knee on MRI in pediatric patients, obfuscating the need for a hand radiograph and its associated cost, radiation exposure, and clinical inefficiency. Hypothesis/Purpose: We sought to validate and demonstrate reliability of a novel shorthand method of bone age determination using knee MRI across multiple levels of medical training. Methods: We identified patients who underwent knee MRI and hand bone age radiograph within a ninety-day period. In collaboration with a pediatric musculoskeletal radiologist, stepwise algorithms for predicting bone age on knee MRI were developed- one for males and one for females. Six raters at varying levels of training used the algorithm to assign a bone age for each patient. Intraclass correlation coefficient (ICC) was used to compare each rater’s predicted knee bone age to the Greulich and Pyle (G&P) hand bone age and validate the shorthand algorithm. Inter-rater reliability was also calculated using ICC. Results: Thirty-eight patients (44.7% female) underwent a knee MRI at a mean age of 12.8 years (range 9.3-15.7). The mean time between hand bone age x-ray and knee MRI was 20.2 days (range 0-88). The inter-rater reliability for the application of our shorthand algorithm was 0.81 (95% CI: 0.72 – 0.88), indicating good inter-observer agreement. The shorthand methos was shown to be a good predictor of G&P hand bone age, both for each individual rater (ICC range: 0.73 – 0.80) and the mean knee MRI bone age across all raters (ICC 0.81; 95% CI 0.65 – 0.90). It was also shown to be a consistent predictor of hand bone age across level of training, as medical students (ICC 0.77, 95% CI 0.60-0.88), residents (ICC 0.80, 95% CI 0.65-0.89), and attending physicians (ICC 0.80, 95% CI 0.63-0.89) all achieved strong correlation between predicted knee MRI bone age and G&P hand bone age. Conclusions: This novel shorthand algorithm is a reliable and valid way to determine skeletal maturity using knee MRI. It can be utilized clinically across different levels of radiographic and orthopaedic expertise and reduces the need for hand bone age radiographs and consequential radiation exposure in children. [Figure: see text][Figure: see text][Table: see text]

Su1478 An Inter-Observer Agreement Study of Autofluorescence Endoscopy in Barrett's Oesophagus Among Expert Endoscopists

2011 ◽  
Vol 73 (4) ◽  
pp. AB277
Author(s):  
Jayan Mannath ◽  
Venkataraman Subramanian ◽  
Emmanouil Telakis ◽  
Kar W. Lau ◽  
Krish Ragunath
Keyword(s):  
Observer Agreement ◽  
Barrett’S Oesophagus ◽  
Barrett's Oesophagus ◽  
Agreement Study ◽  
Autofluorescence Endoscopy

scholarly journals An Independent Agreement Study of Modified Pfirrmann Grading System for Cervical Inter-vertebral Disc Degeneration in Cervical Spondylotic Myelopathy

2020 ◽  
Author(s):  
Chongqing Xu ◽  
Mengchen Yin ◽  
Wen Mo
Keyword(s):  
Disc Degeneration ◽  
Cervical Spondylotic Myelopathy ◽  
Clinical Care ◽  
Weighted Kappa ◽  
Motor Dysfunction ◽  
Observer Agreement ◽  
Grading System ◽  
Observer Reliability ◽  
Vertebral Disc ◽  
Agreement Study

Abstract Background Neck pain, sensory disturbance and motor dysfunction in most patients suffered cervical spondylotic myelopathy (CSM). For CSM surgery, it is necessary to evaluate preoperative inter-vertebral disc degeneration (IDD) which determines whether to adopt fusion strategy, and postoperative IDD which is one of the main reasons for reoperation. Modified Pfirrmann grading system is commonly used to evaluate IDD. The objective of this study is to evaluate its reliability and reproducibility on cervical IDD in CSM patients, and to explore its clinical application value. Methods/Design: All 165 patients with CSM were enrolled. 6 physicians (3 spine surgeons and 3 radiologists) who have certain clinical experience were selected. They graded cervical inter-vertebral disc according to modified Pfirrmann grading system, we used intra-class correlation coefficient (ICC) and weighted kappa (wκ) to assess the inter- and intra-observer agreement. After 12 weeks, we repeated the analysis. Results The inter-observer reliability of modified Pfirrmann grading system was excellent with ICC value of 0.76 and near perfect with wκ value of 0.82. The intra-observer reproducibility of modified Pfirrmann grading system was excellent with ICC values ranging from 0.80–0.91, and near perfect with wκ values ranging from 0.83–0.92. Conclusion Modified Pfirrmann grading system has excellent inter-observer reliability and intra-observer reproducibility on cervical IDD in CSM. In addition, it indicates a good appliance among spine surgeons and radiologists, clinical and radiological studies applying it should be deemed accurate. Thus, modified Pfirrmann grading system can be widely used as an appropriate instrument in clinical care.

scholarly journals INTER- AND INTRA-OBSERVER AGREEMENT IN THE MILCH AND WEISS SYSTEMS

2018 ◽  
Vol 26 (4) ◽  
pp. 218-221
Author(s):  
Sergio Charles Lozoya ◽  
Joaquín Darío Treviño Báez ◽  
Jesús María Rangel Flores ◽  
Jesús Miguel Brizuela Ventura ◽  
Omar Araiza Topete ◽  
...  
Keyword(s):  
Classification Systems ◽  
Observer Agreement ◽  
Entire Group ◽  
Level Of Evidence ◽  
Orthopedic Surgeons ◽  
Overall Evaluation ◽  
Agreement Study ◽  
Humeral Condyle ◽  
Radiological Studies ◽  
Overall Reliability

ABSTRACT Objective: The aim of this study is to estimate the inter- and intra-observer agreement of the Weiss and Milch classification systems in radiological studies of fractures of the lateral humeral condyle in pediatric patients. Methods: An agreement study was performed with non-probability sampling of consecutive cases with a sample size of a hundred radiological studies, which were evaluated by three experienced orthopedic surgeons and three resident physicians; following a thorough comparison of both inter- and intra-observer agreements over a six-week period based on the Fleiss’ kappa, which was used to determine the inter- and intra-observer agreement rates of both classifications. Results: The overall reliability of the entire group of evaluators for the Milch classification in the inter-observer evaluation was κ = 0.13, 95% CI, 0.08-0.18, and the intra-observer evaluation was κ = 0.08, 95% CI, 0.06-0.11. For the Weiss classification, the overall evaluation had an inter-observer agreement of κ = 0.53, 95% CI, 0.50-0.57, and an intra-observer agreement of κ = 0.22, 95% CI, 0.20 −0.24. Conclusion: In the present study, the Weiss classification system demonstrated greater agreement than the Milch classification; however, the latter may require complementary studies, such as an arthrography to enhance classification accuracy. Level of Evidence II, Diagnostic Studies - Investigating Diagnostic Examination.

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