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A Nomogram of Fetal Lung Volumes Estimated by 3‐Dimensional Ultrasonography Using the Rotational Technique (Virtual Organ Computer‐Aided Analysis)
Author(s) -
Ruano Rodrigo,
Joubin Laurence,
Aubry Marie-Cécile,
Thalabard Jean-Christophe,
Dommergues Marc,
Dumez Yves,
Benachi Alexandra
Publication year - 2006
Publication title -
journal of ultrasound in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 91
eISSN - 1550-9613
pISSN - 0278-4297
DOI - 10.7863/jum.2006.25.6.701
Subject(s) - medicine , gestational age , nomogram , fetus , lung , lung volumes , crown rump length , nuclear medicine , pregnancy , radiology , first trimester , genetics , biology
Objective. The purpose of this study was to build a nomogram of normal fetal lung volumes throughout gestational age estimated by 3‐dimensional ultrasonography using the rotational technique (Virtual Organ Computer‐Aided Analysis [VOCAL]; GE Healthcare, Kretztechnik, Zipf, Austria). Methods. Fetal lung volume was assessed in 146 healthy fetuses by 3‐dimensional ultrasonography using the technique of rotation of the multiplanar imaging (VOCAL). Inclusion criteria were healthy women with singleton normal pregnancies, normal fetal morphologic ultrasonographic findings, reliable dating established by dates and by ultrasonographic measurement of the crown‐lump length in the first trimester, and gestational age from 20 to 37 weeks. Exclusion criteria were discordance between clinical and ultrasonographic dating, patients lost to follow‐up, and birth weight disorders. Each patient was scanned once during pregnancy. Results. The right, left, and total mean pulmonary volumes ranged, respectively, from 5.37, 4.66, and 9.95 cm 3 at 20 weeks to 46.06, 37.34, and 84.35 cm 3 at 37 weeks. The logistic transformation analysis yielded the following formulas: right lung volume = exp(4.07/[1 + exp(21.90 − gestational age/5.44)]); left lung volume = exp(3.82/(1 + exp[22.03 − gestational age/5.17)]); and, total lung volume = exp(4.72/[1 + exp(20.30 − gestational age/6.05)]). Conclusions. A new nomogram of fetal lung (right, left, and total) volumes throughout gestational age using the rotational technique (VOCAL) is described, and reference values have been generated.