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Quantitative cervical elastography during pregnancy: influence of setting features on strain calculation
Arrigo Fruscalzo1,2, Ambrogio P Londero3, Ralf Schmitz4
1Frauenklinik, Mathias-Spital Rheine, Frankenburgstr. 31, 48431, Rheine, Germany. fruscal@libero.it.
Journal of Medical Ultrasonics (2001)
|November 19, 2015
Summary
Quantitative tissue Doppler imaging (TDI)-based cervical elastography is feasible and reliable during pregnancy. Strain values are influenced by derivative pitch and cycle phase but do not impede clinical use.
Area of Science:
- Obstetrics and Gynecology
- Medical Imaging
- Biophysics
Background:
- Quantitative tissue Doppler imaging (TDI)-based cervical elastography is an emerging technique.
- Its application in pregnancy requires evaluation of influencing factors like cycle phase and derivative pitch (DP).
Purpose of the Study:
- To assess the feasibility and reliability of TDI-based cervical elastography during pregnancy.
- To determine the impact of cycle phase and DP on strain measurements.
Main Methods:
- A pilot study involving 17 pregnant patients (12-42 weeks gestation).
- Cervical strain (TS) was measured using quantitative elastography with varying DP values (5-20 mm) and compression/relaxation phases.
- Feasibility and intra-operator reliability (ICC) were evaluated.
Main Results:
- TDI-based cervical elastography was feasible in all cases.
- Strain values showed an inverse correlation with DP and were slightly higher during compression.
- High intra-operator reliability was observed (ICC 0.79-0.95).
Conclusions:
- TDI-based cervical elastography is a feasible and reliable method for assessing cervical changes during pregnancy.
- Derivative pitch and cycle phase influence strain values but do not compromise the technique's utility.
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