Department of Ultrasound, Shanghai Changning Maternity and Infant Health Hospital, East China Normal University, Shanghai, 200050, China.
Department of Gynecology, Shanghai Changning Maternity and Infant Health Hospital, East China Normal University, Shanghai, 200050, China.
BMC Med Imaging. 2023 May 22;23(1):65. doi: 10.1186/s12880-023-01020-7.
The usefulness of transvaginal two-dimensional shear wave elastography (2D SWE) for cervical lesions is still uncertain. This study was to explore the value of transvaginal 2D SWE in the evaluation of the stiffness of normal cervix and its change with different factors under strict quality control (QC).
Two hundred patients with normal cervix were included in this study and were examined using quantitative 2D SWE to evaluate cervical stiffness and its change with different factors under strict QC.
Intra-observer concordance of transvaginal 2D SWE parameters in midsagittal planes were acceptable with intraclass correlation coefficients higher than 0.5. Transvaginal 2D SWE parameters were significantly higher than the corresponding transabdominal parameters. 2D SWE parameters of internal cervical os were significantly higher than the corresponding parameters of external cervical os in a transvaginal midsagittal plane. 2D SWE parameters of external cervical os increased significantly over 50 years old, while these parameters of internal cervical os didn't change significantly with increasing age. 2D SWE parameters of internal cervical os of horizontal position cervix were significantly higher than those of vertical position cervix. SWE parameters of normal cervix did not change according to different menstrual cycles, parities and human papilloma virus test results.
Transvaginal 2D SWE under strict QC could provide quantitative, repeatable and reliable cervical stiffness information. Internal cervical os was stiffer than external cervical os. Menstrual cycles, parities and human papilloma virus test results wouldn't affect cervical stiffness. However, age and cervical positions should be taken into condition while interpreting 2D SWE results of cervical stiffness.
经阴道二维剪切波弹性成像（2D SWE）在宫颈病变中的应用价值尚不确定。本研究旨在探讨严格质量控制（QC）下经阴道 2D SWE 评估正常宫颈硬度及其随不同因素变化的价值。
本研究纳入 200 例正常宫颈患者，采用定量 2D SWE 评估严格 QC 下不同因素对宫颈硬度的影响及其变化。
经阴道 2D SWE 参数在正中矢状面的观察者内一致性可接受，组内相关系数高于 0.5。经阴道 2D SWE 参数明显高于相应的经腹部参数。经阴道正中矢状面，宫颈内口的 2D SWE 参数明显高于宫颈外口的相应参数。宫颈外口的 2D SWE 参数随年龄增长显著增加，而宫颈内口的相应参数随年龄增长无明显变化。水平位宫颈的宫颈内口 2D SWE 参数明显高于垂直位宫颈。正常宫颈的 SWE 参数不受不同月经周期、产次和人乳头瘤病毒检测结果的影响。
严格 QC 下的经阴道 2D SWE 可提供定量、可重复和可靠的宫颈硬度信息。宫颈内口比宫颈外口硬。月经周期、产次和人乳头瘤病毒检测结果不会影响宫颈硬度。然而，在解释宫颈硬度的 2D SWE 结果时，应考虑年龄和宫颈位置等因素。
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