2026-06-27T23:51:36Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/734012023-08-27T10:57:59Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc Sánchez García, Daniel author Aguado del Hoyo, Alejandra author Sánchez Pérez, María author GarcíaTizón Larroca, Santiago author Ruiz Martín, Yolanda author Gordillo Gutiérrez, Isabel author Bravo Arribas, Coral author Álvarez Mon, Melchor author Ortega, Miguel A. author De León Luis, Juan Antonio author 2022-04-24 Objective: To examine the influence of age, sex and height on the symphysis–ischial spine distance (SID) measured on pelvic Computed tomography (CT)images in subjects of reproductive age, and to determine the interobserver reproducibility. This measurement (SID) is of great importance because the use of intrapartum ultrasound is based on the assumption of a specific value (30 mm) of such a measurement. Methods: This was a cross-sectional descriptive study in which SID was measured in subjects aged 20 to 44 years who had been scheduled for pelvic CT at our centre from January 2018 to May 2021 for different reasons. Radiographic measurements of the pelvis were obtained through the multiplanar reconstruction of the CT image. The images obtained from all of the participants were independently assessed by three senior radiologists, and the SID measurements made by each one were blinded from those of the remaining observers. Correlations between the SID and patient age, height and sex were analyzed by univariate and multivariate linear regression. Results: The mean SID for 87 of the enrolled participants (45 women, 42 men) was 28.2 ± 6.25 mm. Among the observers, the mean difference in this distance was 1 to 2 mm, and was scarcely related to measurement size, with agreement being greater than 70%. The mean SID was significantly related to sex and height (SID = −24.9 − 6.51 × sex (0 or 1) + 0.34 × height (cm); p = 0.01; sex equals 1 for a man and 0 for a woman), such that it was a mean of 2.5 mm greater in women than men (29.50 mm vs. 26.99 mm). Conclusion: Measurements of SID on CT images show good interobserver reproducibility, and are related to sex and height. 2077-0383 10.3390/jcm11092395 https://hdl.handle.net/20.500.14352/73401 https://doi.org/10.3390/jcm11092395 https://www.mdpi.com/2077-0383/11/9/2395 Effects of Sex, Age and Height on Symphysis–Ischial Spine Distance Measured on a Pelvic CT