PURPOSE: The aim of this study was to determine normative data for fetal cisterna magna length (CML) measurement in a Brazilian population. METHODS: This was a retrospective cross-sectional study on 3,862 normal singleton pregnancies between the 18th and 24th weeks of pregnancy. Fetal CML was measured in the axial plane of the fetal head, at lateral ventricle level, including the cavum septum pellucidum, thalamus, third ventricle, and transverse cerebellar diameter. The anteroposterior measurement was made between the posterior border of the cerebellar vermis and the internal face of the occipital bone. To assess the correlation between CML and gestational age (GA), polynomial equations were calculated, with adjustments using determination coefficient (R2). RESULTS: The mean CML ranged from 4.29±0.93 mm at 18 to 18+6 weeks to 5.58±1.23 mm at 24 to 24+6 weeks of pregnancy. There was a good correlation between CML and GA, best represented by a linear equation: CML=0.535+0.208*GA (R2=0.084). CONCLUSION: We established normative data for fetal CML in the second trimester of pregnancy, in a large Brazilian population.
PURPOSE: The aim of this study was to determine normative data for fetal cisterna magna length (CML) measurement in a Brazilian population. METHODS: This was a retrospective cross-sectional study on 3,862 normal singleton pregnancies between the 18th and 24th weeks of pregnancy. Fetal CML was measured in the axial plane of the fetal head, at lateral ventricle level, including the cavum septum pellucidum, thalamus, third ventricle, and transverse cerebellar diameter. The anteroposterior measurement was made between the posterior border of the cerebellar vermis and the internal face of the occipital bone. To assess the correlation between CML and gestational age (GA), polynomial equations were calculated, with adjustments using determination coefficient (R2). RESULTS: The mean CML ranged from 4.29±0.93 mm at 18 to 18+6 weeks to 5.58±1.23 mm at 24 to 24+6 weeks of pregnancy. There was a good correlation between CML and GA, best represented by a linear equation: CML=0.535+0.208*GA (R2=0.084). CONCLUSION: We established normative data for fetal CML in the second trimester of pregnancy, in a large Brazilian population.
Authors: Edward Araujo Júnior; Hélio A Guimarães Filho; Cláudio R Pires; Luciano M Nardozza; Antonio F Moron; Rosiane Mattar Journal: Arch Gynecol Obstet Date: 2006-06-08 Impact factor: 2.344
Authors: Fernanda Silveira Bello de Barros; Luiz Cláudio de Silva Bussamra; Edward Araujo Júnior; Leonardo da Silva Valladão de Freitas; Luciano Marcondes Machado Nardozza; Antonio Fernandes Moron; José Mendes Aldrighi Journal: ISRN Obstet Gynecol Date: 2012-11-14