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29.08.2018 | Ultrasound

Reliability of 2D and 3D ultrasound for infant hip dysplasia in the hands of novice users

verfasst von: Emanuel Mostofi, Baljot Chahal, Dornoosh Zonoobi, Abhilash Hareendranathan, Koosha P. Roshandeh, Sukhdeep K. Dulai, Jacob L. Jaremko

Erschienen in: European Radiology | Ausgabe 3/2019

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Abstract

Purpose

Developmental dysplasia of the hip (DDH) diagnosis by two-dimensional ultrasound (2DUS) can have poor inter-rater reliability. 3D ultrasound (3DUS) may be more reliably performed, particularly by novice users. We compared intra- and inter-rater reliability between expert and novice operators performing 2DUS and 3DUS for DDH.

Materials and methods

Infants with suspected DDH were assessed with 2DUS and 3DUS. Novice operators had 1.5 h of training and Experts had 5–15 years’ experience. Images included two 2DUS static and two 3DUS sweep images per operator. Image quality was assessed by 5-point system (yes/no: full femoral head; full acetabular roof; horizontal iliac wing; os ischium; absent motion/artifact). 2DUS indices (alpha angle, coverage) were measured centrally by a blinded reader with 2 years DDH US experience. 3DUS was post-processed by semi-automated custom software generating acetabular surface models, indices and estimated probability of DDH. Gold-standard diagnosis of each hip as normal, borderline or dysplastic was based on radiologist review of expert 2DUS.

Results

Thirty infants, mean age 10.8 weeks were enrolled. Quality scores were 2.7±1.2 Novice versus 4.9±0.3 Expert for 2DUS (p = 0.04), and 4.2±1.0 Novice versus 4.9±0.3 Expert for 3DUS (p = 0.99). Inter-rater reliability was poor for 2DUS (ICC=0.10 for alpha angle, 0.04 for acetabular coverage) and moderate to high for 3DUS (ICC=0.73-0.83 for alpha angle, 0.55 for acetabular coverage). Intra-rater reliability and diagnostic accuracy was higher for 3DUS than 2DUS.

Conclusion

Novice operators can perform 3DUS for DDH with reliability and accuracy approaching expert sonographers. Novices perform 2DUS with poor reliability and accuracy.

Key Points

• Novice/expert inter-rater reliability improved from poor with 2DUS to moderate/high with 3DUS.

• Novice operators using 3DUS correctly classified 57/58 (98%) of infant hips.

• DDH can be reliably assessed by novice operators using 3DUS.

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Titel: Reliability of 2D and 3D ultrasound for infant hip dysplasia in the hands of novice users
verfasst von: Emanuel Mostofi
Baljot Chahal
Dornoosh Zonoobi
Abhilash Hareendranathan
Koosha P. Roshandeh
Sukhdeep K. Dulai
Jacob L. Jaremko
Publikationsdatum: 29.08.2018
Verlag: Springer Berlin Heidelberg
Erschienen in: European Radiology / Ausgabe 3/2019
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-018-5699-1

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Reliability of 2D and 3D ultrasound for infant hip dysplasia in the hands of novice users

Abstract

Purpose

Materials and methods

Results

Conclusion

Key Points

Neu im Fachgebiet Radiologie

Fünf Dinge, die im Kindernotfall besser zu unterlassen sind

Wie toxische Männlichkeit der Gesundheit von Männern schadet

Studie bestätigt Potenzial von KI in der Radiologie

Quantitative Angiografie könnte IVUS-Alternative darstellen

Update Radiologie

Live-Webinar: Aktuelle Leitlinien bei Herz-Kreislauf-Erkrankungen

Springer Medizin

Abstract

Purpose

Materials and methods

Results

Conclusion

Key Points

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