Cerebral biometry in fetal magnetic resonance imaging: new reference data

Wiley - Tập 33 Số 2 - Trang 173-181 - 2009
Bogdana Tilea1,2, Corinne Alberti3,4, C. Adamsbaum5,6, Priscilla Armoogum3,4, Jean‐François Oury7,2, D. Cabrol8,6, G. Sebag1,2, G. Kalifa5,6, Catherine Garel1,9
1AP-HP, Hôpital Robert Debré, Service d'Imagerie Pédiatrique, Paris, France
2Université Paris VII, Denis Diderot, Paris, France
3AP-HP, Hôpital Robert Debré, Unité d'Epidémiologie Clinique, Paris, France
4Inserm, CIE5, Paris, France
5AP-HP, Hôpital Saint-Vincent-de-Paul, Service de Radiologie Pédiatrique, Paris, France
6Université Paris V René Descartes, Paris, France
7AP-HP, Hôpital Robert Debré, Service de Gynécologie Obstétrique - Centre de Diagnostic Prénatal, Paris, France
8AP-HP, Hôpital Saint-Vincent-de-Paul, Centre de Diagnostic Prénatal - Maternité de Port-Royal, Paris, France
9AP-HP, Hôpital d'Enfants Armand-Trousseau, Service de Radiologie Pédiatrique, Paris, France

Tóm tắt

AbstractObjectivesTo provide normal magnetic resonance imaging (MRI) reference biometric data of the fetal brain, to evaluate reproducibility and gender effect, to compare the two cerebral hemispheres and to compare MRI with ultrasonographic biometry, in a large cohort.MethodsNormal cerebral fetal MRI examinations were collected prospectively and several parameters were measured: the supratentorial space (bone and cerebral fronto‐occipital and biparietal (BPD) diameters), the length of the corpus callosum (LCC), the surface area, height and anteroposterior diameter of the vermis, the transverse cerebellar diameter (TCD) and the anteroposterior diameter of the pons. We evaluated the interobserver reproducibility of measurements and the possible gender effect on measurements of bone BPD, TCD and LCC. We compared right and left hemispheres, right and left atria and ultrasound and MRI measurements.ResultsThe study included 589 fetuses, ranging from 26 to 40 weeks. Normal values (from 3rd to 97th percentile) are provided for each parameter. Interobserver agreement was excellent, with an intraclass correlation coefficient (ICC) > 0.75 for many parameters. The gender effect was evaluated in 372 cases and did not reveal any clinically meaningful difference. Comparison between the right and left cerebral hemispheres and between the right and left atria did not reveal any meaningful differences. Ultrasound and MRI measurements of BPD and TCD were compared in 94 cases and 48 cases, respectively, and the agreement was excellent (ICC = 0.85).ConclusionsWe present new reproducible reference charts for cerebral MRI biometry at 26–40 weeks' gestation, from a large cohort of fetuses. Copyright © 2009 ISUOG. Published by John Wiley & Sons, Ltd.

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Wiley

Tập 33 Số 2

173-181

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