Alfred Abuhamad1, Peter Falkensammer, Yueqin Zhao. 1. Department of Obstetrics and Gynecology, Eastern Virginia Medical School, Hofheimer Hall, Suite 310, 825 Fairfax Ave, Norfolk, VA 23507, USA.
Abstract
OBJECTIVE: This study defines the spatial relationship of the diagnostic planes of the fetal heart to the 4-chamber view plane in the second trimester of pregnancy as a first step in the automation process. METHODS: Three-dimensional static volumes of the fetal chest were acquired at the level of the 4-chamber view on 75 fetuses between 18 and 23 weeks' gestation. The spatial relationship of the diagnostic cardiac planes to the 4-chamber view plane were determined for each gestational week by using rotations along the x-, y-, and z-axes and a parallel slide (millimeters) when applicable. RESULTS: The 5-chamber view (cardiac 1 plane) was best obtained by an initial parallel slide of the reference plane (plane A) toward the fetal head followed by a rotation along the y-axis. The right ventricular outflow tract (cardiac 2) and the abdominal circumference (cardiac 3) planes were best obtained by a parallel slide only: toward the fetal head in cardiac 2 and toward the fetal abdomen in cardiac 3. CONCLUSIONS: This study shows the spatial relationship of fetal cardiac diagnostic planes to the 4-chamber view plane in the second trimester of pregnancy in 3-dimensional volumes. Testing the clinical applicability of automated software based on these formulas is the next step.
OBJECTIVE: This study defines the spatial relationship of the diagnostic planes of the fetal heart to the 4-chamber view plane in the second trimester of pregnancy as a first step in the automation process. METHODS: Three-dimensional static volumes of the fetal chest were acquired at the level of the 4-chamber view on 75 fetuses between 18 and 23 weeks' gestation. The spatial relationship of the diagnostic cardiac planes to the 4-chamber view plane were determined for each gestational week by using rotations along the x-, y-, and z-axes and a parallel slide (millimeters) when applicable. RESULTS: The 5-chamber view (cardiac 1 plane) was best obtained by an initial parallel slide of the reference plane (plane A) toward the fetal head followed by a rotation along the y-axis. The right ventricular outflow tract (cardiac 2) and the abdominal circumference (cardiac 3) planes were best obtained by a parallel slide only: toward the fetal head in cardiac 2 and toward the fetal abdomen in cardiac 3. CONCLUSIONS: This study shows the spatial relationship of fetal cardiac diagnostic planes to the 4-chamber view plane in the second trimester of pregnancy in 3-dimensional volumes. Testing the clinical applicability of automated software based on these formulas is the next step.
Authors: M Garcia; L Yeo; R Romero; D Haggerty; I Giardina; S S Hassan; T Chaiworapongsa; E Hernandez-Andrade Journal: Ultrasound Obstet Gynecol Date: 2016-03-10 Impact factor: 7.299
Authors: F Vecchiato; M D'Onofrio; R Malagò; E Martone; A Gallotti; N Faccioli; V Cantisani; C Marigliano; A Ruzzenente; R Pozzi Mucelli Journal: Radiol Med Date: 2009-06-23 Impact factor: 3.469