1982
DOI: 10.7863/jum.1982.1.4.145
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A standardized plane for biparietal diameter measurement.

Abstract: Biparietal diameter measurement is the most widely accepted means of determining gestational age. However, a standard anatomic plane for performing this measurement has not been established. Three hundred forty-four measurements on 256 patients who gave birth to normal infants were obtained and compared at various cranial levels based on brain anatomy. The results document that use of a standardized plane increases measurement reliability but does not significantly alter variability. We postulate that variabil… Show more

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Cited by 81 publications
(66 citation statements)
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“…Although this plane does not add significant anatomic information to that obtained from the transventricular and transcerebellar planes, it is used for biometry of the fetal head. It has been proposed that, particularly in late gestation, this section plane is easier to identify and allows more reproducible measurements than does the transventricular plane 25 .…”
Section: Transthalamic Planementioning
confidence: 99%
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“…Although this plane does not add significant anatomic information to that obtained from the transventricular and transcerebellar planes, it is used for biometry of the fetal head. It has been proposed that, particularly in late gestation, this section plane is easier to identify and allows more reproducible measurements than does the transventricular plane 25 .…”
Section: Transthalamic Planementioning
confidence: 99%
“…The anatomic landmarks include, from anterior to posterior, the frontal horns of the lateral ventricles, the cavum septi pellucidi, the thalami and the hippocampal gyruses 25 . Although this plane does not add significant anatomic information to that obtained from the transventricular and transcerebellar planes, it is used for biometry of the fetal head.…”
Section: Transthalamic Planementioning
confidence: 99%
“…Se considera que este plano de sección es fácil de identificar en la gestación tardía, y permite mediciones más reproducibles que en transventricular (46). …”
Section: Médula Espinalunclassified
“…En nuestro medio se emplea asiduamente la medición fuera-dentro para evitar artefactos generados por el eco distal del cráneo. La circunferencia cefálica o perímetro cefálico se puede medir directamente emplazando la elipse por fuera de los huesos de la circunferencia fetal (46). Alternativamente, la circunferencia cefálica (CC) puede calcularse con el DBP y el DOF utilizando la ecuación: CC= 1.62 x (DBP + DOF).…”
Section: Evaluación Cuantitativaunclassified
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