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目的探讨甲状腺癌在声脉冲辐射力(ARFI)弹性成像声触诊组织定性成像(VTI)和声触诊组织定量(VTQ)成像上的特征。方法分析20例甲状腺癌患者21个癌灶的ARFI成像特征。将甲状腺结节的VTI图像分为6级,评估甲状腺癌VTI图像分布特征。应用VTQ技术检测甲状腺癌及相同深度处周围甲状腺组织的横向剪切波速度(SWV)并进行比较分析。结果 21个甲状腺癌病灶VTI图像分析:1级0个;2级1个;3级2个;4级8个;5级7个;6级3个;VTI图像4级及以上占85.7%(18/21)。甲状腺癌病灶VTQ检测SWV平均值为(4.70±2.79)m/s(范围:2.14～9.00m/s);与其相同深度处周邻甲状腺组织的SWV平均值为(2.16±0.46)m/s(范围:1.37～3.33m/s),两者比较差异有统计学意义(t=4.109,P<0.01);21个甲状腺癌病灶与相同深度处周邻甲状腺组织的SWV比值的平均值为2.23±1.43(范围:0.97～6.16)。结论 AFRI技术、VTI和VTQ能定性及定量反映甲状腺癌病灶的硬度,可能对判断甲状腺癌性质提供诊断依据。
Objective To investigate the features of acoustic palpation (ARFI) elastography in acoustic palpation tissue qualitative imaging (VTI) and acoustic palpation tissue quantitative (VTQ) imaging in thyroid cancer. Methods The imaging features of ARFI in 21 lesions of 20 thyroid cancer patients were analyzed. VTI images of thyroid nodules were divided into 6 grades to evaluate the distribution of VTI in thyroid cancer. VTQ technique was used to detect the transverse shear wave velocity (SWV) of thyroid carcinoma and thyroid tissue around the same depth and comparative analysis. Results VTI image analysis of 21 thyroid cancer lesions: 0 grade 1, 2 grade 1, 3 grade 2, 4 grade 8, 5 grade 7, 6 grade 3, and VTI grade 4 and above accounted for 85.7% 18/21). The mean value of SWV in thyroid cancer was (4.70 ± 2.79) m / s (range: 2.14-9.00 m / s), while the average SWV in adjacent thyroid tissue at the same depth was (2.16 ± 0.46) m / (T = 4.109, P <0.01). The average SWV ratio of 21 thyroid cancer lesions and adjacent thyroid tissue at the same depth was 2.23 ± 1.43 (range: 0.97 ~ 6.16). Conclusion AFRI technique, VTI and VTQ can qualitatively and quantitatively reflect the hardness of thyroid cancer and may provide a diagnostic basis for judging the nature of thyroid cancer.