Acta Academiae Medicinae Sinica

Acta Academiae Medicinae Sinica

Acta Academiae Medicinae Sinica ›› 2017, Vol. 39 ›› Issue (2): 266-271.doi: 10.3881/j.issn.1000-503X.2017.02.017

• Orginal Article • Previous Articles     Next Articles

Initial Experience in the Application of Virtual Touch Tissue Quantification in the Differential Diagnosis of Focal Pancreatic Lesions

Jie HAN, Ke Lü, Yuxin JIANG(), Qing DAI, Jianchu LI, Mengna HE, Pin GAO   

  1. Department of Ultrasound,PUMC Hospital,CAMS and PUMC,Beijing 100730,China
  • Received:2016-01-20 Online:2017-04-20 Published:2017-04-20
  • Supported by:
    Supported by the Foundation of Non-profit Public Service (201402001)

Abstract:

Objective To explore the potential value of the virtual touch tissue quantification (VTQ) in the differential diagnosis of focal pancreatic lesions. Methods Totally 51 patients with focal pancreatic lesions underwent the quantitative analysis by VTQ. Based on the pathologic or clinical diagnosis,the VTQ values including lesional shear wave velocity (LSWV),parenchymal shear wave velocity (PSWV),and difference shear wave velocity (DSWV)(DSWV=LSWV-PSWV) were compared between the lesions and background parenchyma. Results The mean LSWV and PSWV were (2.39±1.25) m/s(0.60-4.39 m/s) and (1.59±0.63) m/s (0.76-3.22 m/s) in malignant group,(1.92±1.07) m/s(0.79-4.00 m/s) and (1.43±0.41) m/s(0.80-2.23 m/s) in potentially malignant group,and (2.40±1.10) m/s (0.89-3.42 m/s) and (1.48±0.44) m/s (1.03-2.11 m/s) in benign group. There were statistically significant difference between LSWV and PSWV in bengin and malignant group (P=0.029,P=0.005),while no statistical significance in potential malignant group (P=0.087). However,LSWV,PSWV,and DSWV showed no significant difference among these three groups (P=0.401,P=0.638,P=0.625,respectively). LSWV was not significantly associated with the tumor size (r=0.253,P>0.05) but had negative correlation with the depth of region of interest (r=-0.413,P<0.05). Conclusion VTQ may be valuable in the differential diagnosis of focal pancreatic lesions,although further research is still required.

Key words: virtual touch tissue quantification, shear wave velocity, pancreatic lesion, diagnosis

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