JOURNAL OF SHANDONG UNIVERSITY (HEALTH SCIENCES) ›› 2016, Vol. 54 ›› Issue (11): 72-75.doi: 10.6040/j.issn.1671-7554.0.2015.1087

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Diffusion-weighted MR neurography of the median nerve in carpal tunnel syndrome: a preliminary study

BAO Hongjing1, WANG Guangbin2, WANG Shanshan2, WU Chao2   

  1. 1. Department of Ultrasound, Peoples Hospital of Xingan League, Ulan Hot 137400, Inner Mongolia, China;
    2. Shandong Medical Imaging Research Institute, Jinan 250021, Shandong, China
  • Received:2015-11-09 Online:2016-11-10 Published:2016-11-10

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Abstract: Objective To compare the diagnostic value of diffusion-weighted MR neurography(DW-MRN)and ultrasonography of median nerve(MN)lesion in carpal tunnel syndrome(CTS). Methods A total of 13 healthy volunteers(19 wrists, control group)and 14 CTS patients(17 wrists, patient group)were included. The ultrasound(US)and DW-MRN were used to detect the MN at the level of pisiform bone. The cross-sectional area(CSA)and apparent diffusion coefficient(ADC)were calculated by two independent inspectors. Receiver operating characteristic(ROC)curve was drawn to assess the diagnostic efficiency. Results There were significant differences on the CSA and ADC between control group and patient group(both P<0.001). The area under curve(AUC)of CSA was higher than that of ADC in the diagnosis of CTS(AUC>0.8). No significant difference of diagnostic value was found between DW-MRN and US(P>0.05). Conclusion DW-MRN has good diagnostic efficiency for the MN in carpal tunnel syndrome, and has equal efficiency as US.

Key words: Magnetic resonance imaging, Carpal tunnel syndrome, Diffusion-weighted, Ultrasonography

CLC Number: 

  • R445
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