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Chinese Journal of Medical Ultrasound (Electronic Edition) ›› 2017, Vol. 14 ›› Issue (02): 134-140. doi: 10.3877/cma.j.issn.1672-6448.2017.02.012

Special Issue:

• Superficial Parts Ultrasound • Previous Articles     Next Articles

Analysis of influencing factors on the hardness of papillary thyroid carcinoma diagnosed by virtual touch tissue quantification technology

He Ding1, Huixiong Xu2, Junmei Xu2,(), Xiaolong Li2, Xiaowan Bo2, Boji Liu2, Yaping He2, Lin Fang2, Shen Qu2   

  1. 1. Department of Medical Ultrasound, Shanghai Tenth People′s Hospital, Tenth People′s Hospital of Tongji University, Ultrasound Research and Education Institute, Tongji University School of Medicine, Shanghai 200072, China
  • Received:2016-05-29 Online:2017-02-01 Published:2017-02-01
  • Contact: Junmei Xu
  • About author:
    Corresponding author: Xu Junmei, Email:

Abstract:

Objective

To analyse the influencing factors diagnosed by the virtual touch tissue quantification (VTQ) technology on the hardness of papillary thyroid carcinoma (PTC).

Methods

From May 2011 to March 2014, a total of 266 PTCs in 266 patients confirmed by pathology were enrolled in Shanghai Tenth Peoples Hospital. The shear wave velocity (SWV) values of PTCs were measured by VTQ. PTCs were divided into 2 groups including SWV≥2.87 m/s and SWV<2.87 m/s. The χ2 test was used to compare the basic clinical data, ultrasound features and immunohistochemical results between 2 groups. The influencing factors of SWV values of PTCs were analyzed by forward stepwise Logistic regression analysis.

Results

Of the 266 PTCs, 183 were SWV≥2.87 m/s and 83 were SWV<2.87 m/s. The χ2 test showed that the ultrasound features of PTCs such as single or multiple, with or without central lymph node metastasis, location, size, shape, with or without posterior acoustic attenuation, with or without calcification, with or without capsule invasion, whether close to the trachea between the 2 groups were significant different (χ2=4.233, 4.740, 9.910, 4.988, 4.416, 4.737, 7.154, 8.559, all P<0.05 or 0.01). Logistic regression analysis demonstrated that nodules were single or multiple, location, with or without posterior acoustic attenuation, with or without calcification, whether close to the trachea were influencing factors of SWV value of PTCs. The regression equation was defined as Y=-2.507+ 0.670X1 (nodules were single or multiple)+ 0.800X3 (location of nodules)+ 0.851X6 (with or without posterior acoustic attenuation) + 0.628X7 (with or without calcification) + 1.106X9 (whether close to the trachea).

Conclusions

Multiple nodules, central lymph node metastasis, located isthmus, nodules size>10 mm, irregular shape, posterior acoustic attenuation, calcification, capsule invasion, close to the trachea were correlated with the diagnosis of PTC by VTQ technology. The more characteristics of nodules appeared, such as multiple nodules, located isthmus, posterior acoustic attenuation, calcification, close to the trachea, the harder PTCs were.

Key words: Elasticity imaging techniques, Thyroid neoplasms, Hardness

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