Abstract #2677
Respiratory Self-Navigated Inversion Recovery GRE Whole-Heart Coronary MR Imaging Using an Intravascular Contrast Agent in a Pediatric Population
Davide Piccini 1,2 , Gary R. McNeal 3 , W. James Parks 4,5 , Michael O. Zenge 6 , and Tim C. Slesnick 4,5
1
Advanced Clinical Imaging Technology,
Siemens Healthcare, Lausanne, Switzerland,
2
Department
of Radiology, University Hospital (CHUV) and University
of Lausanne (UNIL) / Center for Biomedical Imaging
(CIBM), Lausanne, Switzerland,
3
Customer
Solutions Group, Siemens Medical Solutions USA, Inc,
Malvern, PA, United States,
4
Department
of Pediatrics, Emory University, Atlanta, GA, United
States,
5
Children's
Healthcare of Atlanta, Atlanta, GA, United States,
6
MR
Product Innovation and Definition, Siemens AG,
Healthcare Sector, Erlangen, Germany
Free-breathing coronary MRI in pediatric patients is a
valuable radiation-free alternative to coronary CT.
Although navigator-gated inversion-recovery gradient
echo (NAV IR GRE) imaging after administration of blood
pool contrast agents has shown some advantages, compared
to T2-prepared bSSFP imaging, unpredictable acquisition
times and low scan efficiency due to respiratory gating
remain a problem. In this work 3D radial whole-heart
coronary MRI with respiratory self-navigation was
adapted to IR GRE imaging. After protocol optimization,
this approach was compared to NAV IR GRE in a first
pediatric patient population. Equivalent vessel quality,
sharpness and length were achieved with highly
predicable scan times.
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