Magnetic Resonance Imaging of the Urinary Tract in the Fetal and Pediatric Population

2007 ◽  
Vol 36 (4) ◽  
pp. 153-163 ◽  
Author(s):  
D. Alicia Morales Ramos ◽  
Pedro A.B. Albuquerque ◽  
Lucia Carpineta ◽  
Ricardo Faingold
Keyword(s):  
Magnetic Resonance Imaging ◽  
Urinary Tract ◽  
Magnetic Resonance ◽  
Pediatric Population ◽  
Resonance Imaging

scholarly journals Applicability of Magnetic Resonance Imaging in the Assessment of Fetal Urinary Tract Malformations

2019 ◽  
Vol 70 (1) ◽  
pp. 83-95 ◽  
Author(s):  
Tatiana Mendonça Fazecas ◽  
Edward Araujo Júnior ◽  
Heron Werner ◽  
Pedro Daltro ◽  
Alberto Borges Peixoto ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Urinary Tract ◽  
Magnetic Resonance ◽  
Three Dimensional ◽  
Surface Coil ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri ◽  
Urinary Tract Malformations ◽  
Weighted Sequences ◽  
Urinary Tract Anomalies

Objective To assess the applicability of magnetic resonance imaging (MRI) to complement ultrasound in the diagnosis of fetal urinary tract anomalies. Methods This was a retrospective cohort study that included 41 women between 19 weeks and 37 weeks and 6 days of gestation carrying fetuses with malformations of the urinary tract which were initially diagnosed by ultrasound and then referred for MRI. In all cases, the diagnosis was confirmed after birth either through imaging or autopsy. A surface coil was positioned over the abdomen and T2-weighted sequences were obtained in the axial, coronal, and sagittal planes; T1 in at least one plane; and three-dimensional (3-D) TRUFI in fetuses with dilatation of the urinary tract. Results Mean gestational age at the time of MRI examination was 28.21 weeks. The rapid T2 sequences allowed all the anomalies of the fetal urinary tract to be assessed, whereas 3-D TRUFI sequencing proved very useful in evaluating anomalies involving dilatation of the urinary tract. The signs of pulmonary hypoplasia characterized by hypointense signal in the T2-weighted sequences were identified in 13 of the 41 fetuses. Conclusion MRI confirmed and added information to the ultrasound regarding fetal urinary tract anomalies, as well as information related to the other associated malformations, their progress in the prenatal period, and possible postnatal prognosis.

4D flow magnetic resonance imaging: role in pediatric congenital heart disease

2017 ◽  
Vol 26 (1) ◽  
pp. 28-37 ◽  
Author(s):  
Claire M Lawley ◽  
Kathryn M Broadhouse ◽  
Fraser M Callaghan ◽  
David S Winlaw ◽  
Gemma A Figtree ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Congenital Heart Disease ◽  
Blood Flow ◽  
Heart Disease ◽  
Magnetic Resonance ◽  
Congenital Heart ◽  
Pediatric Population ◽  
Anatomical Location ◽  
Resonance Imaging ◽  
Dimensional Flow

Imaging-based evaluation of cardiac structure and function remains paramount in the diagnosis and monitoring of congenital heart disease in childhood. Accurate measurements of intra- and extracardiac hemodynamics are required to inform decision making, allowing planned timing of interventions prior to deterioration of cardiac function. Four-dimensional flow magnetic resonance imaging is a nonionizing noninvasive technology that allows accurate and reproducible delineation of blood flow at any anatomical location within the imaging volume of interest, and also permits derivation of physiological parameters such as kinetic energy and wall shear stress. Four-dimensional flow is the focus of a great deal of attention in adult medicine, however, the translation of this imaging technique into the pediatric population has been limited to date. A more broad-scaled application of 4-dimensional flow in pediatric congenital heart disease stands to increase our fundamental understanding of the cause and significance of abnormal blood flow patterns, may improve risk stratification, and inform the design and use of surgical and percutaneous correction techniques. This paper seeks to outline the application of 4-dimensional flow in the assessment and management of the pediatric population affected by congenital heart disease.

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