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Quantitative elastography for cervical stiffness assessment during pregnancy
A Fruscalzo1, A P Londero2, C Fröhlich3
1Obstetrics and Gynecology, Mathias-Spital Rheine, Frankenburgstraße 31, 48431 Rheine, Germany ; Obstetrics and Gynecology, St. Franziskus Hospital, Hohenzollernring 72, 48145 Münster, Germany.
Aim:
Feasibility and reliability of tissue Doppler imaging-(TDI-) based elastography for cervical quantitative stiffness assessment during all three trimesters of pregnancy were evaluated.
Materials And Methods:
Prospective case-control study including seventy-four patients collected between the 12th and 42nd weeks of gestation. The tissue strain (TS) was measured by two independent operators as natural strain. Intra- and interoperator intraclass correlation coefficient (ICC) agreements were evaluated.
Results:
TS measurement was always feasible and exhibited a high performance in terms of reliability (intraoperator ICC-agreement=0.93; interoperator ICC agreement=0.89 and 0.93 for a single measurement and for the average of two measurements, resp.). Cervical TS showed also a significant correlation with gestational age, cervical length, and parity.
Conclusions:
TS measurement during pregnancy demonstrated high feasibility and reliability. Furthermore, TS significantly correlated with gestational age, cervical length, and parity.
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