scholarly journals Color and Power Doppler US for Diagnosing Carpal Tunnel Syndrome and Determining Its Severity: A Quantitative Image Processing Method

Radiology ◽  
2011 ◽  
Vol 261 (2) ◽  
pp. 499-506 ◽  
Author(s):  
Ahmad Reza Ghasemi-Esfe ◽  
Omid Khalilzadeh ◽  
Seyed Mehran Vaziri-Bozorg ◽  
Mahdie Jajroudi ◽  
Madjid Shakiba ◽  
...  
Keyword(s):  
Image Processing ◽  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Power Doppler ◽  
Processing Method ◽  
Image Processing Method ◽  
Doppler Us ◽  
Quantitative Image ◽  
Tunnel Syndrome ◽  
Color And Power Doppler

scholarly journals Color and Power Doppler US for Diagnosing Carpal Tunnel Syndrome and Determining Its Severity

Radiology ◽  
2012 ◽  
Vol 262 (3) ◽  
pp. 1043-1044 ◽  
Author(s):  
Einar P. Wilder-Smith ◽  
Aravindakannan Therimadasamy
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Power Doppler ◽  
Doppler Us ◽  
Tunnel Syndrome ◽  
Color And Power Doppler

scholarly journals Influence of temperature on sonographic images of the median nerve for the diagnosis of carpal tunnel syndrome: a case control study

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Yi-Wei Chang ◽  
Chii-Jen Chen ◽  
You-Wei Wang ◽  
Valeria Chiu ◽  
Shinn-Kuang Lin ◽  
...  
Keyword(s):  
Blood Flow ◽  
Carpal Tunnel Syndrome ◽  
Skin Temperature ◽  
Median Nerve ◽  
Carpal Tunnel ◽  
Power Doppler ◽  
Power Doppler Ultrasonography ◽  
Local Skin ◽  
Significant Difference ◽  
Tunnel Syndrome

Abstract Background In addition to nerve conduction studies (NCSs), ultrasonography has been widely used as an alternative tool for diagnosing carpal tunnel syndrome (CTS). Although the results of NCSs are influenced by local skin temperature, few studies have explored the effects of skin temperature on ultrasonography of the median nerve. Since swelling and intraneural blood flow of the median nerve might be influenced by local temperature changes, the aim of this study was to evaluate the cross-sectional area (CSA) and intraneural blood flow of the median nerve under three skin temperatures (30 °C, 32 °C, 34 °C). Methods Fifty patients with CTS and 50 healthy volunteers were consecutively recruited from a community hospital. Each participant received physical examinations and NCSs and underwent ultrasonography, including power Doppler, to evaluate intraneural vascularity. Results The CSA of the median nerve in the CTS patients was significantly larger than that in the healthy controls at all three temperatures. However, significant differences in the power Doppler signals of the median nerve between the two studied groups were observed only at 30 and 32 °C, not at 34 °C. Conclusion The significant difference in the intraneural vascularity of the median nerve between the patients with CTS and the healthy subjects was lost at higher temperatures (34 °C). Therefore, the results of power Doppler ultrasonography in diagnosing CTS should be cautiously interpreted in patients with a high skin temperature or those who reside in warm environments.

Ultrasound for diagnosis of carpal tunnel syndrome: comparison of different methods to determine median nerve volume and value of power Doppler sonography

2012 ◽  
Vol 72 (12) ◽  
pp. 1934-1939 ◽  
Author(s):  
Christian Dejaco ◽  
Martin Stradner ◽  
Dorothea Zauner ◽  
Werner Seel ◽  
Nicole Elisabeth Simmet ◽  
...  
Keyword(s):  
Carpal Tunnel Syndrome ◽  
Median Nerve ◽  
Carpal Tunnel ◽  
Intraclass Correlation ◽  
Power Doppler ◽  
Ultrasound Measurement ◽  
Anatomical Landmarks ◽  
Doppler Signals ◽  
Diagnostic Values ◽  
Tunnel Syndrome

ObjectiveTo compare ultrasound measurement of median nerve cross-sectional area (CSA) at different anatomical landmarks and to assess the value of power Doppler signals within the median nerve for diagnosis of carpal tunnel syndrome (CTS).MethodsA prospective study of 135 consecutive patients with suspected CTS undergoing two visits within 3 months. A final diagnosis of CTS was established by clinical and electrophysiological findings. CSA was sonographically measured at five different levels at forearm and wrist; and CSA wrist to forearm ratios or differences were calculated. Intraneural power Doppler signals were semiquantitatively graded. Diagnostic values of different ultrasound methods were compared by receiver operating characteristic curves using SPSS.ResultsCTS was diagnosed in 111 (45.5%) wrists; 84 (34.4%) had no CTS and 49 (20.1%) were possible CTS cases. Diagnostic values were comparable for all sonographic methods to determine median nerve swelling, with area under the curves ranging from 0.75 to 0.85. Thresholds of 9.8 and 13.8 mm2 for the largest CSA of the median nerve yielded a sensitivity of 92% and a specificity of 92%. A power Doppler score of 2 or greater had a specificity of 90% for the diagnosis of CTS. Sonographic median nerve volumetry revealed a good reliability with an intraclass correlation coefficient of 0.90 (95% CI 0.79 to 0.95).ConclusionsSonographic assessment of median nerve swelling and vascularity allows for a reliable diagnosis of CTS. Determination of CSA at its maximal shape offers an easily reproducible tool for CTS classification in daily clinical practice.

Value of Grayscale and Power Doppler High‐Resolution Ultrasound in Assessment of Patients with Clinically Suspected Carpal Tunnel Syndrome

2019 ◽  
Vol 39 (6) ◽  
pp. 1155-1162
Author(s):  
Amr Mohamed Gamil ◽  
Mennatallah Hatem Shalaby ◽  
Khaled Ali Shehata ◽  
Ahmed Mohamed El Deeb
Keyword(s):  
High Resolution ◽  
Carpal Tunnel Syndrome ◽  
Carpal Tunnel ◽  
Power Doppler ◽  
Tunnel Syndrome
Sign in / Sign up

Export Citation Format

Share Document