18MHz 和 22MHz 探头在巨细胞动脉炎超声诊断中的比较。
Comparison of 18- and 22-MHz probes for the ultrasonographic diagnosis of giant cell arteritis.
机构信息
Vascular Medicine Department, Brest Teaching Hospital, Brest University, Brest, France.
Rheumatology Department, Brest Teaching Hospital, Brest University, INSERM, LBAI, UMR1227, Brest, France.
出版信息
J Clin Ultrasound. 2021 Jul;49(6):546-553. doi: 10.1002/jcu.22986. Epub 2021 Feb 10.
PURPOSE
Little is known about the diagnostic concordance of images provided by ultrasound probes with emitting frequencies below or above 20 MHz for the diagnosis of giant cell arteritis (GCA).
METHODS
We compared, using Cohen's kappa statistic, data obtained with an 18-MHz and a 22-MHz probe for the ultrasonographic evaluation of temporal arteries in 80 patients referred for suspected GCA.
RESULTS
The halo sign was found in 25% of cases with the 18-MHz probe and in 35% with the 22-MHz probe. The compression sign was positive in 42% of cases with the 18-MHz probe and 48% with the 22-MHz probe. GCA was finally diagnosed in 20 patients (25%). The kappa coefficient of agreement was 0.76 (P < .001) for the halo sign, and 0.75 (P < .001) for the compression sign.
CONCLUSIONS
Images obtained by 18 MHz and 22-MHz frequency probes showed a good level of agreement for the diagnosis of GCA, but the 22-MHz probe yielded a correct diagnosis of GCA in 3 of the 7 patients in whom examination with the 18-MHz probe was negative.
目的
低频（低于 20MHz）和高频（高于 20MHz）超声探头在巨细胞动脉炎（GCA）诊断中的图像诊断一致性知之甚少。
方法
我们比较了 80 例疑似 GCA 患者的颞动脉超声评估中 18MHz 和 22MHz 探头的数据，采用 Cohen's kappa 统计量。
结果
18MHz 探头的晕环征阳性率为 25%，22MHz 探头为 35%。18MHz 探头的压迫征阳性率为 42%，22MHz 探头为 48%。最终诊断为 20 例（25%）GCA。晕环征和压迫征的kappa 系数分别为 0.76（P<0.001）和 0.75（P<0.001）。
结论
18MHz 和 22MHz 频率探头的图像对于 GCA 的诊断具有良好的一致性，但在 18MHz 探头检查为阴性的 7 例患者中，22MHz 探头正确诊断了 3 例 GCA。
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