Evaluation Of freehand high‐resolution 3‐dimensional ultrasound of the median nerve

Introduction: 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

[1]  T. Schelle.  Methodik und was kann die Nervensonografie , 2015, Klinische Neurophysiologie.

[2]  E Merz,et al.  25 Years of 3D Ultrasound in Prenatal Diagnosis (1989–2014) , 2015, Ultraschall in der Medizin.

[3]  D. Saur,et al.  Quantification of Internal Carotid Artery Stenosis with 3D Ultrasound Angiography , 2015, Ultraschall in der Medizin.

[4]  C. Kang,et al.  Correlation between Ultrasonography Findings and Electrodiagnostic Severity in Carpal Tunnel Syndrome: 3D Ultrasonography , 2014, Journal of clinical neurology.

[5]  L. Visser,et al.  Difference in normal values of median nerve cross‐sectional area between dutch and indian subjects , 2014, Muscle & nerve.

[6]  D. Bereczki,et al.  High-Resolution Ultrasonography of Peripheral Nerves: Measurements on 14 Nerve Segments in 56 Healthy Subjects and Reliability Assessments , 2014, Ultraschall in der Medizin.

[7]  Krishna Kumar,et al.  Normal values of median nerve cross‐sectional area obtained by ultrasound along its course in the arm with electrophysiological correlations, in 100 Asian subjects , 2014, Muscle & nerve.

[8]  C. Plastaras,et al.  High‐Resolution Median Nerve Sonographic Measurements , 2013, Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine.

[9]  R. Gold,et al.  Cross sectional area reference values for sonography of peripheral nerves and brachial plexus , 2013, Clinical Neurophysiology.

[10]  J. Yoon,et al.  Reference values for nerve ultrasonography in the upper extremity , 2013, Muscle & nerve.

[11]  F. Walker,et al.  Validity and reliability of nerve and muscle ultrasound , 2013, Muscle & nerve.

[12]  R. Lang,et al.  Echocardiography and vascular ultrasound: new developments and future directions. , 2013, The Canadian journal of cardiology.

[13]  S. Peer.  Introduction to High-Resolution Sonography of the Peripheral Nervous System: General Considerations and Examination Technique , 2013 .

[14]  A. Fenster,et al.  Feasibility of 3D Ultrasound to Evaluate Upper Extremity Nerves , 2012, Ultraschall in der Medizin.

[15]  A. Boon,et al.  Evidence‐based guideline: Neuromuscular ultrasound for the diagnosis of carpal tunnel syndrome , 2012, Muscle & nerve.

[16]  L. Padua,et al.  Intra‐ and internerve cross‐sectional area variability: New ultrasound measures , 2012, Muscle & nerve.

[17]  G. Mostbeck,et al.  Diagnostische Sonografie peripherer Nerven: Indikationen, Techniken und Pathologien , 2011 .

[18]  C. Kang,et al.  Application of 3‐Dimensional Ultrasonography in Assessing Carpal Tunnel Syndrome , 2011, Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine.

[19]  H. Gruber,et al.  Diagnostic sonography of peripheral nerves: indications, examination techniques and pathological findings. , 2011, Ultraschall in der Medizin.

[20]  J. Collinger,et al.  Repeatability of ultrasonographic median nerve measures , 2010, Muscle & nerve.

[21]  J. Kreutziger,et al.  Inter- and intraobserver reliability of predefined diagnostic levels in high-resolution sonography of the carpal tunnel syndrome - a validation study on healthy volunteers. , 2009, Ultraschall in der Medizin.

[22]  A. Pestronk,et al.  Peripheral nerve size in normals and patients with polyneuropathy: An ultrasound study , 2009, Muscle & nerve.

[23]  F. Walker,et al.  Ultrasonographic Reference Values for Assessing the Normal Median Nerve in Adults , 2009, Journal of neuroimaging : official journal of the American Society of Neuroimaging.

[24]  L. Yao,et al.  Median nerve cross-sectional area and MRI diffusion characteristics: normative values at the carpal tunnel , 2009, Skeletal Radiology.

[25]  A. Gray,et al.  The Importance of Transducer Angle to Ultrasound Visibility of the Femoral Nerve , 2005, Regional Anesthesia & Pain Medicine.