Quantitative cervical elastography during pregnancy: influence of setting features on strain calculation
Quantitative cervical elastography during pregnancy: influence of setting features on strain calculation
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DOI：
10.1007/s10396-015-0619-3
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发表时间：
2015-07-01
影响因子：
1.8
通讯作者：
Schmitz, Ralf
中科院分区：
文献类型：
--
作者：
Fruscalzo, Arrigo;Londero, Ambrogio P.;Schmitz, Ralf
旨在评估基于定量组织多普勒成像 (TDI) 的宫颈弹性成像对妊娠所有三个三个月的周期阶段和组织应变 (TS) 计算期间选择的导数螺距 (DP) 的可行性和可靠性的影响。该试点研究包括在妊娠第 12 周至第 42 周期间收集的 17 名患者。 TS 由单个操作员通过定量弹性成像测量。通过阴道探针对子宫颈进行徒手压缩和松弛循环后，测试 DP 值（5、10、15 和 20 mm）和相位（压缩与松弛）的影响。还针对所使用的每种设置评估了应变测量的可行性和操作者内部组内相关系数 (ICC) 一致性。TS 值与 DP 呈负相关，如果在压缩阶段测量，TS 值会略高。基于 TDI 的颈部弹性成像在所有情况下都是可行的。不同原始数据集的应变计算过程的可靠性非常好（ICC一致性范围在0.79和0.87之间），而考虑到相同的原始数据集则非常出色（ICC一致性范围在0.93和0.95之间）。DP和循环阶段影响计算的应变值。尽管如此，基于 TDI 的颈部弹性成像对于所有考虑的情况都是可行且可靠的。
To evaluate the influence on feasibility and reliability of quantitative tissue Doppler imaging (TDI)-based cervical elastography of the cycle phase and of the derivative pitch (DP) selected during tissue strain (TS) calculation across all three trimesters of pregnancy.The pilot study included 17 patients collected between the 12th and the 42nd week of gestation. The TS was measured by a single operator by quantitative elastography. The influence of DP values (5, 10, 15, and 20 mm) and phase (compression versus relaxation) was tested after a cycle of freehand compression and relaxation of the cervix through the vaginal probe. Feasibility and intra-operator intraclass correlation coefficient (ICC) agreement for strain measurement were also evaluated for every setting used.TS values were inversely correlated with DP and were slightly higher if measured during a compression phase. TDI-based cervical elastography was feasible in all cases. Reliability for the process of strain calculation of different raw datasets was very good (ICC agreement ranging between 0.79 and 0.87), while excellent considering the same raw dataset (ICC agreement ranging between 0.93 and 0.95).The DP and cycle phase influenced the strain values calculated. Nonetheless, TDI-based cervical elastography was feasible and reliable for all the settings considered.