Evaluation of Image Quality in Obstetrical Ultrasonography: Comparison Between Subjective Assessment and Contrast-to-noise Ratio

NCT06265974 | Completed

• 1 other identifier: ECHOQUALITY
• Study Type: observational
• Target: 198
• Locations: 1 country
• Sites: 1

Brief Summary

The goal of this observational study is to determine whether the subjective assessment of the quality of obstetrical ultrasonography pictures can be similar to that of an objective tool. The main question it aims to answer is: Is the subjective assessment of the quality of obstetrical ultrasonography pictures by a young practitioner and an experienced one can be similar to that of an objective tool, such as the contrast-to-noise ratio (CNR)? The contrast-to-noise ratio is commonly used in radiology to evaluate image quality by assessing the ability to distinguish differences between two elements. The investigators selected a retrospective cohort of 198 patients, including three pictures per fetus screened between 18 and 18 weeks and 6 days. For each picture, the investigators assessed the quality of two different elements and the entire image, and then calculated the CNR using software. The investigators will compare the three assessment between them

Conditions

Ultrasonography; Obstetrics

Keywords

Quality

Outcome Measures

Primary Outcomes (1)

• The comparability between a subjective and objective assessment of the contrast to noise ratio of an obstetric ultrasound image

  Both an experienced operator (a Ph.D. doctor) and a novice operator (a residency student) subjectively evaluated the contrast and noise of each region of interest previously chosen. Contrast was scored on a scale of 1 to 3, with 1 indicating low contrast, 2 for medium, and 3 for high contrast. Noise was scored on the same scale, with 1 corresponding to low noise, 2 for medium, and 3 for high noise. The subjective contrast to noise ratio (CNR) was determined by the ratio between these two scores. To assess the objective CNR, computer-assisted image analysis was performed using MATLAB software.

  baseline

Eligibility Criteria

• Age: 18 Years+
• Sex: female
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

Women having undergone an ultrasound between 18 weeks and 18 weeks + 6 days at the Multidisciplinary Prenatal Diagnostic Center of Poitiers University Hospital

You may qualify if:

• Patient who underwent ultrasound between 18 weeks and 18 weeks + 6 days for prenatal diagnosis
• Ultrasound performed by the same practitioner
• Ultrasound performed on the same ultrasound machine "Voluson E10", with the "RM6C" probe

You may not qualify if:

• Patient's refusal
• Use of another ultrasound device other than the "Voluson E10", and/or an ultrasound probe other than the "RM6C"
• Intrauterine fetal deaths

Sponsors & Collaborators

• Poitiers University Hospital: lead

Study Sites (1)

University Hospital La MILETRIE

Poitiers, 86000, France

Location

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: RETROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: February 1, 2024
• First Posted: February 20, 2024
• Study Start: August 1, 2023
• Primary Completion: January 1, 2024
• Study Completion: January 31, 2024
• Last Updated: February 20, 2024

Record last verified: 2024-02

Locations

FR (1)