Diagnostic value of magnetic resonance imaging and high-frequency ultrasound for synovitis of the hip in children
Objective To explore the diagnostic value of magnetic resonance imaging(MRI)and high-frequency ultrasound for synovitis of the hip in children(SHC).Methods A total of 107 children suffering from hip pain were enrolled and underwent MRI and ultrasound examinations.The value of MRI and ultrasound for diagnosing SHC and identifying different types of SHC was analyzed.Results The result consistency between high-frequency ultrasound and clinical diagnosis was higher than that between MRI and clinical diagnosis(Kappa:0.717 vs 0.586).The AUC of the combined detection for diagnosing SHC was greater than that of MRI(0.844 vs 0.812,P<0.05).For the differential diagnosis of different types of SHC,the result consistency between high-frequency ultrasound and clinical diagnosis was higher than that between MRI and clinical diagnosis(Kappa:0.813 vs 0.630).The AUC of high-frequency ultrasound and the combined detection for differentiation between joint swelling type and joint effusion type of SHC was 0.903 and 0.912,higher than 0.815 of MRI(P<0.05).The detection rates of joint space abnormality,joint effusion,joint swelling and joint cartilage changes were 92.45%(49/53),73.91%(17/23),90.70%(39/43),and 77.78%(14/18)when using MRI,and those were 96.23%(51/53),91.30%(21/23),95.35%(41/43),and 88.89%(16/18)when using high-frequency ultrasound.There was no significant difference in the detection rates of pathological changes such as joint space abnormality between the two methods(P>0.05).Conclusion The combined detection of MRI and high-frequency ultrasound has high diagnostic value for SHC.
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