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. 2020 Oct 29;12:10789–10797. doi: 10.2147/CMAR.S278382

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© 2020 Li et al.

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Ultrasound and ARFI elastography images of patients with solitary and cN₀ PTC. Figures (A–E) are images of contralateral CLMN in patients with solitary and cN₀ PTC, while Figures (a) to (e) are images without contralateral CLMN. Grayscale ultraound, SMI, VAR displayed on VTI, ARFI quality mode, VTIQ are showed in figures (A) and (a), (B) and (b), (C) and (c), (D) and (d), and (E) and (e). The images of grayscale ultrasound, SMI, and VAR are similar between patients with or without contralateral CLMN. However, the SWV_mean of patient with contralateral CLMN (3.17 m/s) displayed on VTIQ is higher than that of patient without contralateral CLMN (2.54 m/s).

Abbreviations: ARFI, acoustic radiation force impulse; cN_0, clinical lymph node negative; PTC, papillary thyroid carcinoma; CLMN, central lymph node metastasis; SMI, superb microvascular imaging; VTI, virtual touch tissue; VTIQ, virtual touch tissue quantification; VAR, virtual touch tissue area ratio; SWV, shear wave velocity.