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Third trimester fetal 4D flow MRI with motion correction.
Magn Reson Med
January 2025
Department of Radiology & Nuclear Medicine, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
Purpose: To correct maternal breathing and fetal bulk motion during fetal 4D flow MRI.
Methods: A Doppler-ultrasound fetal cardiac-gated free-running 4D flow acquisition was corrected post hoc for maternal respiratory and fetal bulk motion in separate automated steps, with optional manual intervention to assess and limit fetal motion artifacts. Compressed-sensing reconstruction with a data outlier rejection algorithm was adapted from previous work.
Advances in the Treatment of Neonatal Coarctation of the Aorta.
Pediatrics
January 2025
Department of Pediatric Cardiology and Critical Care, Hannover Medical School, Hannover, Germany.
Coarctation of the aorta (CoA) is a potentially life-threatening congenital and obstructive anomaly of the distal aortic arch. After constriction of the ductus arteriosus, neonates may develop critical CoA in the isthmus area and present with severe left ventricular dysfunction or even cardiac failure. Low cardiac output and abdominal hypoperfusion (distal to the coarctation) may lead to metabolic derangements and clinical deterioration.
View Article and Find Full Text PDFA novel diagnostic model for fetal coarctation of the aorta with ventricular septal defect.
Int J Cardiol
December 2024
Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Clinical Research Center for Medical Imaging in Hubei Province, Wuhan, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China. Electronic address:
Background: Our study aimed to develop a novel diagnostic model for fetal coarctation of the aorta with ventricular septal defect(CoA/VSD).
Methods And Results: We respectively included 70 fetuses with suspected CoA/VSD(January 2017-June 2023). After birth, 26 fetuses (26/47, 55.
Reliability of 4D Flow MRI for Investigation of Fetal Cardiovascular Hemodynamics in the Third Trimester.
Radiol Cardiothorac Imaging
December 2024
From the Departments of Radiology (E.K.E., T.F., M.L.M., L.P.B., A.J.B.), Pediatrics-Cardiology (R.M.F.), and Bioengineering (A.J.B.), University of Colorado Anschutz Medical Campus, 13123 E 16th Ave B125, Aurora, CO 80045; and Department of Radiology, Children's Hospital Colorado, Aurora, Colo (S.A.S., A.J.B.).
Article Synopsis
- The study aimed to establish reference values for fetal 4D flow MRI and assess its reliability in measuring blood flow in healthy fetuses and those with suspected aortic coarctation (CoA).
- Researchers conducted MRI scans on 34 pregnant patients, collecting data from both healthy fetuses and those with potential cardiovascular issues, analyzing the accuracy and consistency of the flow measurements obtained.
- The results indicated that fetal 4D flow MRI provides reliable hemodynamic measurements with high precision and repeatability, although it tends to underestimate blood flow compared to traditional 2D phase contrast MRI techniques.
[An unusual case of bicuspid aortic valve in adult age].
G Ital Cardiol (Rome)
December 2024
S.C. Cardiologia/UTIC.
A 38-year-old man was evaluated for heart palpitations and chest pain diagnosed with atrial fibrillation, left ventricular ejection fraction 30%, and moderate aortic insufficiency. On echocardiographic control, evidence of aortic bicuspid valve and aortic coarctation on the isthmus with dilated epiaortic vessels. Computed tomography angiography confirmed the presence of aortic coarctation of the descending portion of the arch with supply of the thoracic aorta by collateral vessels originating from the brachiocephalic vessels.
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