Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Radiological Investigation I: X-ray and CT01:30

Radiological Investigation I: X-ray and CT

901
Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and...
901
Ultrasonography01:17

Ultrasonography

7.1K
Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called...
7.1K
Radiological Investigation II: MRI and Ventilation Perfusion Scan01:30

Radiological Investigation II: MRI and Ventilation Perfusion Scan

385
Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
385
X-ray Imaging01:24

X-ray Imaging

9.5K
German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...
9.5K
Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

295
Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
295
Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

648
Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
648

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Tandem versus single haematopoietic stem cell transplant and BV maintenance in relapsed/refractory Hodgkin lymphoma: A matched cohort analysis from the LYSA.

British journal of haematology·2023
Same author

Feasibility of a nasal breathing training during pulmonary rehabilitation. A pilot randomized controlled study.

Respiratory physiology & neurobiology·2022
Same author

Diagnosis and treatment of focal splenic lesions.

Journal of visceral surgery·2022
Same author

Prevalence of carotid web in a French cohort of cryptogenic stroke.

Journal of the neurological sciences·2021
Same author

Retrospective case-control study to predict a potential underlying appendiceal tumor in an acute appendicitis context based on a CT-scoring system.

European journal of radiology·2021
Same author

Applying an immersive tutorial in virtual reality to learning a new technique.

Neuro-Chirurgie·2020
Same journal

Precision imaging and minimally invasive therapy in osteoid osteoma.

Diagnostic and interventional imaging·2026
Same journal

Interstitial lung disease pattern recognition on full high resolution computed tomography volume: Development and evaluation of a decision-support tool for less-experimented radiologists.

Diagnostic and interventional imaging·2026
Same journal

Breast cryoablation: What does the current evidence allow us to say?

Diagnostic and interventional imaging·2026
Same journal

Rethinking personalization in prostatic artery embolization: It is not who we treat, but how.

Diagnostic and interventional imaging·2026
Same journal

Simultaneous pulmonary ventilation and perfusion imaging using spectral photon counting CT with xenon and gadolinium-based agents in combination with color K-edge imaging.

Diagnostic and interventional imaging·2026
Same journal

Occupational radiation exposure and radiation protection practices in interventional radiology and cardiology: A multicenter study in France.

Diagnostic and interventional imaging·2026
See all related articles

Related Experiment Video

Updated: Dec 8, 2025

Author Spotlight: Advancing CBCT and Digital Dental Image Integration with AI-Assisted Digitization
05:49

Author Spotlight: Advancing CBCT and Digital Dental Image Integration with AI-Assisted Digitization

Published on: February 23, 2024

1.2K

Interobserver agreement issues in radiology.

M Benchoufi1, E Matzner-Lober2, N Molinari3

  • 1Center of Research in Epidemiology and Statistics (CRESS), French Institute of Health and Medical Research (inserm), National Institute of Agricultural Research (INRA), Paris, France; Université de Paris, 75006 Paris, France.

Diagnostic and Interventional Imaging
|September 22, 2020
PubMed
Summary
This summary is machine-generated.

Choosing the right statistical method is crucial for measuring observer agreement. For qualitative data, use kappa coefficient over raw agreement. For quantitative data, use intraclass correlation coefficient (ICC) carefully.

Keywords:
Interobserver agreementIntraclass correlation coefficientKappa testRadiologyReproducibility of results

More Related Videos

Author Spotlight: An Efficient and Robust Software for Automated Fusion of Multiple Preclinical Imaging Modalities
07:13

Author Spotlight: An Efficient and Robust Software for Automated Fusion of Multiple Preclinical Imaging Modalities

Published on: October 27, 2023

1.6K
Coordinate Mapping of Hyolaryngeal Mechanics in Swallowing
14:13

Coordinate Mapping of Hyolaryngeal Mechanics in Swallowing

Published on: May 6, 2014

18.6K

Related Experiment Videos

Last Updated: Dec 8, 2025

Author Spotlight: Advancing CBCT and Digital Dental Image Integration with AI-Assisted Digitization
05:49

Author Spotlight: Advancing CBCT and Digital Dental Image Integration with AI-Assisted Digitization

Published on: February 23, 2024

1.2K
Author Spotlight: An Efficient and Robust Software for Automated Fusion of Multiple Preclinical Imaging Modalities
07:13

Author Spotlight: An Efficient and Robust Software for Automated Fusion of Multiple Preclinical Imaging Modalities

Published on: October 27, 2023

1.6K
Coordinate Mapping of Hyolaryngeal Mechanics in Swallowing
14:13

Coordinate Mapping of Hyolaryngeal Mechanics in Swallowing

Published on: May 6, 2014

18.6K

Area of Science:

  • Statistics
  • Biostatistics
  • Medical Research Methodology

Background:

  • Accurate assessment of inter-rater agreement is vital for the reliability and validity of research findings.
  • Various statistical criteria exist for quantifying observer agreement, but their appropriate selection is critical.
  • Qualitative (nominal, ordinal) and quantitative measures require distinct approaches to agreement analysis.

Purpose of the Study:

  • To provide guidance on selecting appropriate statistical methods for quantifying inter-rater agreement.
  • To highlight the importance of accounting for chance agreement in qualitative measures.
  • To emphasize the correct application of intraclass correlation coefficients (ICC) and the Bland-Altman method.

Main Methods:

  • Review of statistical criteria for inter-rater agreement assessment.
  • Comparison of agreement measures for qualitative data (proportion of agreement vs. kappa coefficient).
  • Evaluation of agreement measures for quantitative data (intraclass correlation coefficient - ICC, Bland-Altman method).

Main Results:

  • The kappa coefficient is preferred over raw agreement for qualitative data as it corrects for chance agreement.
  • The intraclass correlation coefficient (ICC) is suitable for quantitative data, but requires careful specification of the model and type.
  • The Bland-Altman method is appropriate for assessing agreement between two raters but should not be used for more than two.

Conclusions:

  • Appropriate selection of statistical criteria is essential for accurate measurement of inter-rater agreement.
  • Understanding the nuances of different statistical methods ensures reliable assessment of observer consistency.
  • Correct application of measures like kappa coefficient, ICC, and Bland-Altman enhances the quality of research data.