The anterior cervical angle is a novel ultrasound parameter that is being used as a predictor of spontaneous preterm birth.
The angle between the uterine wall and the cervical canal is measured during the first and the second trimester by a transvaginal ultrasound. It is measured using a line that starts from the internal cervical os (that is extended along the cervical canal) and a second line that tracks the internal segment of the anterior uterine wall.
- 1. Daskalakis, George, Theodora, Marianna, Antsaklis, Panagiotis, Sindos, Michael, Grigoriadis, Themistoklis, Antsaklis, Aris, Papantoniou, Nikolaos, Loutradis, Dimitrios, Pergialiotis, Vasilios. Assessment of Uterocervical Angle Width as a Predictive Factor of Preterm Birth: A Systematic Review of the Literature. (2020) BioMed Research International. doi:https://doi.org/10.1155/2018/1837478
- 2. N. Sochacki‐Wójcicka, J. Wojcicki, D. Bomba‐Opon, M. Wielgos. Anterior cervical angle as a new biophysical ultrasound marker for prediction of spontaneous preterm birth. (2015) Ultrasound in Obstetrics & Gynecology. 46 (3): 377. doi:10.1002/uog.14801 - Pubmed
- 3. Sepúlveda-Martínez A, Díaz F, Muñoz H, Valdés E, Parra-Cordero M. Second-Trimester Anterior Cervical Angle in a Low-Risk Population as a Marker for Spontaneous Preterm Delivery. (2017) Fetal diagnosis and therapy. 41 (3): 220-225. doi:10.1159/000447588 - Pubmed