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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.


Related in: MedlinePlus

(A) Longitudinal USG image shows enlargement of the median nerve at carpal tunnel inlet and outlet in carpal tunnel syndrome. Also seen is hypoechoic synovium encasing the flexor tendons in the tunnel, suggestive of tenosynovitis (B) Axial USG image shows increase in cross-sectional area of the median nerve proximal to the tunnel. It is 12.6 mm2 (normal being less than 10 mm2
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Figure 11: (A) Longitudinal USG image shows enlargement of the median nerve at carpal tunnel inlet and outlet in carpal tunnel syndrome. Also seen is hypoechoic synovium encasing the flexor tendons in the tunnel, suggestive of tenosynovitis (B) Axial USG image shows increase in cross-sectional area of the median nerve proximal to the tunnel. It is 12.6 mm2 (normal being less than 10 mm2

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 shows enlargement of the median nerve at carpal tunnel inlet and outlet in carpal tunnel syndrome. Also seen is hypoechoic synovium encasing the flexor tendons in the tunnel, suggestive of tenosynovitis (B) Axial USG image shows increase in cross-sectional area of the median nerve proximal to the tunnel. It is 12.6 mm2 (normal being less than 10 mm2
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Figure 11: (A) Longitudinal USG image shows enlargement of the median nerve at carpal tunnel inlet and outlet in carpal tunnel syndrome. Also seen is hypoechoic synovium encasing the flexor tendons in the tunnel, suggestive of tenosynovitis (B) Axial USG image shows increase in cross-sectional area of the median nerve proximal to the tunnel. It is 12.6 mm2 (normal being less than 10 mm2
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