RT Journal Article
T1 Effects of Sex, Age and Height on Symphysis–Ischial Spine Distance Measured on a Pelvic CT
A1 Sánchez García, Daniel
A1 Aguado del Hoyo, Alejandra
A1 Sánchez Pérez, María
A1 GarcíaTizón Larroca, Santiago
A1 Ruiz Martín, Yolanda
A1 Gordillo Gutiérrez, Isabel
A1 Bravo Arribas, Coral
A1 Álvarez Mon, Melchor
A1 Ortega, Miguel A.
A1 De León Luis, Juan Antonio
AB 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.
PB MDPI
SN 2077-0383
YR 2022
FD 2022-04-24
LK https://hdl.handle.net/20.500.14352/73401
UL https://hdl.handle.net/20.500.14352/73401
LA eng
NO Unión Europea
NO Comunidad de Madrid
NO Instituto de Salud Carlos III
NO Halekulani S.L.
DS Docta Complutense
RD 10 abr 2025