11/8/2023 0 Comments Interrupted aortic arch typeUse of volume reconstruction may promote its clinical usage and help prenatal diagnosis.ī-flow STIC fetal echocardiography interrupted aortic arch spatiotemporal image correlation. It is demonstrated that IAA-A could be diagnosed by traditional fetal echocardiography, while 4D technique could better display the anatomic structure and the spatial relationships of the great arteries. 4D BF-STIC-sagittal and 4D BF-STIC-4CV were better than traditional 2D ultrasound in detecting the aortic arch and neck vessels between 17 and 28 gestational weeks and 29 to 40 gestational weeks in normal fetuses. A significantly enlarged MPA combined with symmetric ventricles was found in the IAA-A fetuses, while the size of the VSD was negatively correlated with RV/LV ratio. Six subgroups were evaluated according to gestational age.įetal 2DE, 4D BF-STIC-sagittal, and 4D BF-STIC-4CV made the correct prenatal diagnosis of IAA-A in 19/23 (82.6%), 14/21 (66.7%), and 19/21 (90.5%) of patients, respectively. Fetal 2DE, 4D BF-STIC-sagittal, and 4D BF-STIC-4CV were used to visualize the aortic arch and its associated neck vessels. PMID: 29742969 DOI: 10. RV/LV and MPA/AAO ratios were calculated and compared with that of IAA-A fetuses. An additional 183 normal fetuses were also included in our study. 4D BF-STIC was performed in 21 fetuses using the sagittal view (4D BF-STIC-sagittal) and the four-chamber view (4D BF-STIC-4CV) as initial planes of view. The fetal echocardiography image data were reviewed to analyze the ratio of right ventricle to left ventricle (RV/LV) diameter, the ratio of main pulmonary artery to ascending aorta (MPA/AAO) diameter, and the correlation of RV/LV diameter ratio and size of ventricular septal defect (VSD). About 30 percent to 40 percent of the infants with interrupted aortic arch have type A. Type A: The interruption occurs just past the left subclavian artery. They are grouped according to the area of the missing piece. There are three types of interrupted aortic arch. Twenty-three cases of confirmed IAA-A identified by fetal echocardiography were involved in the study. Interrupted aortic arch (IAA) means a missing portion of the aortic arch. The purpose of our report is to evaluate the use of two-dimensional echocardiography (2DE) and 4D echocardiography with B-flow imaging and spatiotemporal image correlation (4D BF-STIC) in detecting IAA type A (IAA-A). Common truncus is included among the conotruncal heart anomalies, together with tetralogy of Fallot, interrupted aortic arch type B, and d-transposition of the great arteries. It represents a severe, complete form of aortic coarctation. Types of IAA: Type A: interruption just distal to the left subclavian artery (SCA). Interruption of the aortic arch (IAA) is a discontinuity of the ascending and descending aorta with usually a VSD and/or PDA associations. Surgery must be done within the first few days of a. Type A interrupted aortic arch (IAA) with a small PDA. It consists of a discontinuity between two segments of the aortic arch. Fetal interrupted aortic arch (IAA) is a rare cardiac anomaly and its prenatal diagnosis is challenging. An interrupted aortic arch (IAA) is a rare heart condition in which the aorta doesnt form completely. Interrupted aortic arch (IAA) is a rare congenital heart disease.
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