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中华医学超声杂志(电子版) ›› 2015, Vol. 12 ›› Issue (03) : 241 -246. doi: 10.3877/cma.j.issn.1672-6448.2015.03.015

所属专题: 文献

浅表器官超声影像学

新型声触诊组织成像定量剪切波弹性成像技术鉴别甲状腺结节良恶性的价值
唐力1, 徐辉雄2,(), 李建卫3, 伯小皖2, 吴蓉2, 徐军妹2, 张一峰2, 李丹丹2, 房林4, 曲伸5   
  1. 1. 200072 上海, 同济大学附属第十人民医院超声医学;350001 福州,福建省立医院超声科
    2. 200072 上海, 同济大学附属第十人民医院超声医学
    3. 350001 福州,福建省立医院超声科
    4. 200072 上海, 同济大学附属第十人民医院甲状腺乳腺外科
    5. 200072 上海, 同济大学附属第十人民医院内分泌与代谢科
  • 收稿日期:2014-09-12 出版日期:2015-03-01
  • 通信作者: 徐辉雄
  • 基金资助:
    国家自然科学基金(81401417); 上海市人才发展基金(2012045); 上海市科委生物医药领域科技支撑项目(14441900900); 上海申康医院发展中心市级医院适宜技术联合开发应用推广项目(SHDC12014229)

Novel technique of virtual touch tissue imaging quantification shear wave elastography in differential diagnosis of thyroid nodules: initial experience

Li Tang1, Huixiong Xu2,(), Jianwei Li3, Xiaowan Bo2, Rong Wu2, Junmei Xu2, Yifeng Zhang2, Dandan Li2, Lin Fang4, Shen Qu5   

  1. 1. Department of Medical Ultrasound, Tenth People’s Hospital of Tongji University, Shanghai 200072, China; Department of Ultrasound, Fujian Provincial Hospital, Fuzhou 350001, China
    2. Department of Medical Ultrasound, Tenth People’s Hospital of Tongji University, Shanghai 200072, China
    3. Department of Ultrasound, Fujian Provincial Hospital, Fuzhou 350001, China
    4. Department of Thyroid and Breast Surgery,Tenth People’s Hospital of Tongji University, Shanghai 200072, China
    5. Department of Endocrinology and Metabolism, Tenth People’s Hospital of Tongji University, Shanghai 200072, China
  • Received:2014-09-12 Published:2015-03-01
  • Corresponding author: Huixiong Xu
  • About author:
    Corresponding author: Xu Huixiong, Email:
引用本文:

唐力, 徐辉雄, 李建卫, 伯小皖, 吴蓉, 徐军妹, 张一峰, 李丹丹, 房林, 曲伸. 新型声触诊组织成像定量剪切波弹性成像技术鉴别甲状腺结节良恶性的价值[J]. 中华医学超声杂志(电子版), 2015, 12(03): 241-246.

Li Tang, Huixiong Xu, Jianwei Li, Xiaowan Bo, Rong Wu, Junmei Xu, Yifeng Zhang, Dandan Li, Lin Fang, Shen Qu. Novel technique of virtual touch tissue imaging quantification shear wave elastography in differential diagnosis of thyroid nodules: initial experience[J]. Chinese Journal of Medical Ultrasound (Electronic Edition), 2015, 12(03): 241-246.

目的

探讨最新的声脉冲辐射力成像(ARFI)声触诊组织成像与定量(VTIQ)剪切波弹性成像技术鉴别甲状腺结节良恶性的价值。

方法

回顾性分析2014年6至7月同济大学附属第十人民医院超声科经细针穿刺细胞学检查(FNAC)证实的75例患者共82个甲状腺结节的常规超声及VTIQ弹性成像资料。先行常规甲状腺超声检查,进行甲状腺影像报告与数据系统(TI-RADS)分类。在VTIQ模式下测量病灶内部横向剪切波速度(SWV)。VTIQ质量模式首先确定有效的SWV测量区域;VTIQ速度模式下在有效的测量区域同时进行多组SWV测量,获取SWV最大值、最小值、中位数及平均值(单位为m/s)。应用受试者操作特性曲线(ROC曲线)确定准确性最高的一组SWV,获得其最佳诊断界值并评估VTIQ技术的诊断效能。

结果

82个甲状腺病灶中包括了28个阳性病灶和54个阴性病灶(以FNAC细胞学分级≥5级为阳性判定标准,FNAC细胞学分级<5级为阴性判定标准)。TI-RADS各类的实际阳性率与理论恶性率有较高的符合率。VTIQ测量的甲状腺阴性病灶SWV最大值、最小值、中位数及平均值分别为(3.2±0.6)、(2.2±0.4)、(2.7±0.4)、(2.6±0.4)m/s;阳性病灶上述指标分别为(4.6±1.7)、(3.1±0.8)、(3.5±1.0)、(3.6±1.1)m/s,差异均有统计学意义(t=3.53、3.68、3.32、3.81,P均<0.01)。依据ROC曲线下面积,SWV测值中以平均值的诊断效能最佳,诊断阈值为2.9 m/s。SWV平均值的敏感度、特异度及Youden指数分别为70.6%、88.5%、0.59。

结论

VTIQ剪切波弹性成像采用SWV的平均值鉴别甲状腺结节良恶性具有更高的临床价值。

Objective

To evaluate diagnostic value of the novel virtual touch tissue imaging quantification (VTIQ) technique of acoustic radiation force impulse (ARFI) shear wave elastography in the differential diagnosis between benign and malignant thyroid lesions.

Methods

From June to July 2014, the imaging data of 82 thyroid lesions in 75 patients proven by fine needle aspiration cytology (FNAC) biopsy on conventional ultrasound and VTIQ were retrospectively analyzed. The thyroid nodules were examined by conventional ultrasound firstly and then the lesions were classified by thyroid imaging report and data system (TI-RADS). The maximum, minimum, median and average of shear wave velocity (SWV) values were obtained from multiple SWV measurement under the VTIQ speed mode. The region of interest (ROI) was determined according to the VTIQ quality mode after the patients holding the breath. According to the FNAC cytology results, ROC curve were plotted to determine the most accurate SWV value and the cut-off value for differential diagnosis.

Results

According to the FNAC results, grading ≥ 5 level was set as the positive results and FNAC < 5 level as the negative results. There were 28 positive nodules and 54 negative nodules in 82 thyroid nodules. The positive rates of TI-RADS classification were consistent with the theoretical results. The SWVmax, SWVmin, SWVmedian, and SWVmean on VTIQ of negative and positive thyroid nodules were (3.2±0.6), (2.2±0.4), (2.7±0.4), (2.6±0.4) m/s, and (4.6±1.7), (3.1±0.8), (3.5±1.0), (3.6±1.1) m/s.There were significant differences between positive and negative thyroid nodules in SWVmax, SWVmin, SWVmedian, and SWVmean on VTIQ (t =3.53, 3.68, 3.32, 3.81, all P < 0.01). Based on the area under curve of ROC, the SWVmean value in the nodule was the best value in comparison with other SWV values. The cut-off value of VTIQ mean was 2.9 m/s. According to ROC curve analysis, the sensitivity, specificity and Youden index for VTIQ were 70.6%, 88.5%, 0.59, respectively.

Conclusion

The study proved that VTIQ elastography technique plays an important role in differential diagnosis of thyroid nodules and the VTIQ SWVmean is the best parameter for differential diagnosis.

表1 82例甲状腺结节TI-RADS分类与细针穿刺细胞学结果
图1~4 阳性甲状腺结节(细针穿刺细胞学结果为乳头状癌,判定为6级)的VTIQ检测图。图1为甲状腺结节的普通超声声像图,显示结节呈实性低回声,内部见微钙化灶(TI-RADS判为4C类);图2为该结节VTIQ的质量图,病灶区显示为均匀的绿色,表示弹性成像质量较好;图3为该结节VTIQ速度图(彩色),结节显示为以黄色为主部分为红色的不均匀分布(代表质地较硬),周边甲状腺组织显示为淡绿色或浅蓝色(代表质地较软)。ROI置于病灶内部进行SWV测量(同时检测5个值);图4为该结节VTIQ速度图(黑白)上SWV测量,同时显示病灶普通超声图像及剪切波弹性图
图5~8 阴性甲状腺结节(细针穿刺细胞学结果判为3级)的VTIQ检测图。图5甲状腺结节的普通超声声像图显示边界清、等回声的实性肿块,内部见少许囊性结构(TI-RADS判为3类);图6为该结节VTIQ的质量图,病灶区显示为均匀的绿色,表示弹性成像质量较好;图7为该结节VTIQ速度图(彩色),肿块显示为以淡绿色为主的不均匀分布(代表质地较软),周边甲状腺组织也显示为淡绿色或浅蓝色(代表质地较软),与病灶轮廓分界不清。ROI置于病灶内部进行多个区域的SWV测量(同时检测7个值);图8为该结节VTIQ速度图(黑白)上SWV测量,同时显示病灶普通超声图像及剪切波弹性图
表2 甲状腺阳性与阴性结节的SWV值比较(m/s, ±s
表3 甲状腺病灶各SWV值的ROC曲线
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