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Evaluation Of freehand high‐resolution 3‐dimensional ultrasound of the median nerve
Author(s) -
Pelz Johann Otto,
Busch Maria,
Weinreich Anna,
Saur Dorothee,
Weise David
Publication year - 2017
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.25241
Subject(s) - medicine , ultrasound , coronal plane , 3d ultrasound , median nerve , nuclear medicine , volume (thermodynamics) , surgery , anatomy , radiology , physics , quantum mechanics
: In this study we evaluated freehand 3D ultrasound (3DUS) of the median nerve in comparison to 2D ultrasound (2DUS) and assessed the influence of tilting the transversal plane on cross‐sectional area (CSA) measurement. Methods : Two examiners investigated the median nerves of 22 healthy subjects over a distance of 20 cm using 3DUS. Image quality and CSA were assessed at random points within the virtual 3D volume and compared with 2DUS. Results : Image quality within the virtual 3D volume was good/sufficient/poor in 53.0%/40.2%/6.8% (examiner 1) and 21.6%/69.6%/8.8% (examiner 2), respectively. CSA measurements with 3DUS were smaller than with 2DUS (–12% and –17%; Wilcoxon test, P < 0.001). Interrater agreement for 3DUS and intermethod agreement between 2DUS and 3DUS were moderate. Stepwise tilting of the transversal plane increased CSA significantly. Conclusion : Freehand 3DUS of the median nerve over 20 cm is feasible and may help overcome some of the limitations and pitfalls of 2DUS. Muscle Nerve 55 : 206–212, 2017