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Role of ultrasound in evaluation of peripheral nerves.

Lawande AD, Warrier SS, Joshi MS - Indian J Radiol Imaging (2014)

Bottom Line: Ultrasonography (USG) is an excellent cost-effective modality in imaging of peripheral nerves.With the newer high-frequency probes with different footprints which allow high-resolution imaging at relatively superficial location, USG can detect and evaluate traumatic, inflammatory, infective, neoplastic, and compressive pathologies of the peripheral nerves.This article describes the technique for evaluation of nerves by USG as well as the USG appearances of normal and diseased peripheral nerves.

View Article: PubMed Central - PubMed

Affiliation: Dr. Joshi's Imaging Clinic, 809, Harjivandas Estate, Dadar East, Hindu Colony, Dadar East, Mumbai, India.

ABSTRACT
Ultrasonography (USG) is an excellent cost-effective modality in imaging of peripheral nerves. With the newer high-frequency probes with different footprints which allow high-resolution imaging at relatively superficial location, USG can detect and evaluate traumatic, inflammatory, infective, neoplastic, and compressive pathologies of the peripheral nerves. This article describes the technique for evaluation of nerves by USG as well as the USG appearances of normal and diseased peripheral nerves.

No MeSH data available.


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(A) Longitudinal USG image reveals abrupt change in the caliber of median nerve at the entrance of carpal tunnel (notch sign) in carpal tunnel syndrome. The nerve also shows hypoechoic appearance (B) Intraoperative image confirming the ultrasound findings
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Figure 12: (A) Longitudinal USG image reveals abrupt change in the caliber of median nerve at the entrance of carpal tunnel (notch sign) in carpal tunnel syndrome. The nerve also shows hypoechoic appearance (B) Intraoperative image confirming the ultrasound findings

Mentions: A cross-sectional area of the median nerve proximal to the tunnel inlet more than 10 mm2 is abnormal. This site is identified by the “rising sun” appearance of the proximal lunate.[13] The abrupt change in nerve caliber at the entrance of carpal tunnel is called “notch sign” [Figure 11A and B].[14] The nerve may show a homogeneous hypoechoic appearance with loss of fascicular echopattern [Figure 12A and B]. On dynamic examination, there is reduced transverse sliding movement in some cases. A contralateral comparison usually helps in detecting subtle signs to reach the diagnosis. However, one should remember that a normal nerve does not exclude a diagnosis of neuropathy.


Role of ultrasound in evaluation of peripheral nerves.

Lawande AD, Warrier SS, Joshi MS - Indian J Radiol Imaging (2014)

(A) Longitudinal USG image reveals abrupt change in the caliber of median nerve at the entrance of carpal tunnel (notch sign) in carpal tunnel syndrome. The nerve also shows hypoechoic appearance (B) Intraoperative image confirming the ultrasound findings
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4126140&req=5

Figure 12: (A) Longitudinal USG image reveals abrupt change in the caliber of median nerve at the entrance of carpal tunnel (notch sign) in carpal tunnel syndrome. The nerve also shows hypoechoic appearance (B) Intraoperative image confirming the ultrasound findings
Mentions: A cross-sectional area of the median nerve proximal to the tunnel inlet more than 10 mm2 is abnormal. This site is identified by the “rising sun” appearance of the proximal lunate.[13] The abrupt change in nerve caliber at the entrance of carpal tunnel is called “notch sign” [Figure 11A and B].[14] The nerve may show a homogeneous hypoechoic appearance with loss of fascicular echopattern [Figure 12A and B]. On dynamic examination, there is reduced transverse sliding movement in some cases. A contralateral comparison usually helps in detecting subtle signs to reach the diagnosis. However, one should remember that a normal nerve does not exclude a diagnosis of neuropathy.

Bottom Line: Ultrasonography (USG) is an excellent cost-effective modality in imaging of peripheral nerves.With the newer high-frequency probes with different footprints which allow high-resolution imaging at relatively superficial location, USG can detect and evaluate traumatic, inflammatory, infective, neoplastic, and compressive pathologies of the peripheral nerves.This article describes the technique for evaluation of nerves by USG as well as the USG appearances of normal and diseased peripheral nerves.

View Article: PubMed Central - PubMed

Affiliation: Dr. Joshi's Imaging Clinic, 809, Harjivandas Estate, Dadar East, Hindu Colony, Dadar East, Mumbai, India.

ABSTRACT
Ultrasonography (USG) is an excellent cost-effective modality in imaging of peripheral nerves. With the newer high-frequency probes with different footprints which allow high-resolution imaging at relatively superficial location, USG can detect and evaluate traumatic, inflammatory, infective, neoplastic, and compressive pathologies of the peripheral nerves. This article describes the technique for evaluation of nerves by USG as well as the USG appearances of normal and diseased peripheral nerves.

No MeSH data available.


Related in: MedlinePlus