2026-06-29T02:13:28Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/1151302025-03-18T11:58:23Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc Joigneau Prieto, Laura author Ruíz, Yolanda author Pérez, Laura author Bravo Arribas, Coral author Aguado, Alejandra author Álvarez Mon, Melchor author Ortega, Miguel Ángel author Marín Rodríguez, Carlos author León Luis, Juan Antonio author 2022-05-26 Aim To assess the reproducibility of brainstem-vermis (BV) and brainstem-tentorium (BT) angles measured by fetal Magnetic Resonance Imaging (MRI) during second half of pregnancy in normal and abnormal fetuses. Secondly, to assess reproducibility of two alternative methodologies to measure the brainstem-tentorium angle (BT1 and BT2) proposed by our group that could be more reliable in fetuses with posterior fossa fluid collection (PFFC) anomalies. Finally, to describe the evolution of BV and BT angles along gestation in normal fetuses. Methods We conducted a cross-sectional study of BV and BT angles obtained by MRI performed at our center, in 22 fetuses with PFFC and 8 fetuses without PFFC to calculate both angles’ reproducibility and the correlation between them and the gestational age. Results We found good interobserver reproducibility for the BV, BT1 and BT2 angles (Intraclass correlation coefficient: 0.98; 0.89 and 0.88 for each of these angles, with p < 0.001). In patients with PFFC the BT angle could not always be measured. BT angle presented a positive relationship with gestational age (p = 0.002) but BV angle stayed stable. The measurements of BV, BT1, and BT2 angles can be reliably performed by MRI with good interobserver reproducibility. Conclusion BV angle stays stable during pregnancy, whereas BT angle tends to augment with gestational age. Prieto LJ, Ruiz Y, Pérez L, Bravo C, Aguado A, Alvarez-Mon M, Ortega MA, Marín C, De León-Luis J. The Brainstem-Vermis and Brainstem-Tentorium Angles in the Fetus: A Study of Their Reproducibility by Fetal Magnetic Resonance Imaging and Their Evolution Along the Gestation. Front Med (Lausanne). 2022 May 26;9:878906 2296-858X 10.3389/fmed.2022.878906 https://hdl.handle.net/20.500.14352/115130 https://doi.org/10.3389/fmed.2022.878906 https://www.frontiersin.org/journals/medicine/articles/10.3389/fmed.2022.878906/full The Brainstem-Vermis and Brainstem-Tentorium Angles in the Fetus: A Study of Their Reproducibility by Fetal Magnetic Resonance Imaging and Their Evolution Along the Gestation