Abstract
This review introduces the basic principles of contrast-enhanced magnetic resonance (MR) angiography and details four contrast-enhanced MR angiography sequences for body imaging with extracellular gadolinium-based contrast agents in pediatric patients. Specifically, this review covers (1) respiratory-navigated, cardiac-gated MR angiography; (2) time-resolved MR angiography; (3) conventional MR angiography; and (4) modified spoiled gradient echo variants. We present and discuss indications, technical considerations, sequence optimization, advantages and disadvantages, along with practical tips and illustrative case examples for each sequence.
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Supplementary Information
Online Supplementary Material 1
Movie of coronal navigated contrast-enhanced MR angiography in a 10-year-old boy with Ebstein anomaly who underwent a cone procedure (MP4 23,970 kb)
Online Supplementary Material 2
Excel calculator to determine injection rates and program power injector for performing navigated contrast-enhanced MR angiography (XLSX 10 kb)
Online Supplementary Material 3
Movie of coronal time-resolved contrast-enhanced MR angiography subtraction maximum-intensity projections in a 7-year-old boy with a congenital arteriovenous malformation of the left thigh. Temporal resolution was 5 s with a total of 40 acquisitions (MP4 2,168 kb)
Online Supplementary Material 4
Movie of coronal time-resolved contrast-enhanced MR angiography subtraction maximum-intensity projections in a 6-year-old girl with intestinal failure shows chronic occlusion of the right axillary, subclavian and internal jugular veins along with severe stenoses of the bilateral brachiocephalic veins and superior vena cava (SVC). There is collateral venous drainage of the upper body to the infrarenal inferior vena cava (IVC) via the azygos vein and paravertebral system. Temporal resolution was approximately 2 s with a total of 60 acquisitions (MP4 9,881 kb)
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Aguet, J., Gill, N., Tassos, V.P. et al. Contrast-enhanced body magnetic resonance angiography: how we do it. Pediatr Radiol 52, 262–270 (2022). https://doi.org/10.1007/s00247-021-05020-z
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DOI: https://doi.org/10.1007/s00247-021-05020-z