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Summary: Real-Time MRI Guided Atrial Septal Puncture
and Balloon Septostomy in Swine
Amish N. Raval,1
MD, Parag V. Karmarkar,1,2
MSc, Michael A. Guttman,3
MSc,
Cengizhan Ozturk,1
MD, PhD, Ranil DeSilva,1
MBBS, PhD, Ronnier J. Aviles,1
MD,
Victor J. Wright,1
BS, William H. Schenke,1
BS, Ergin Atalar,2
PhD,
Elliot R. McVeigh,3
PhD, and Robert J. Lederman,1* MD
Cardiac perforation during atrial septal puncture (ASP) might be avoided by improved
image guidance. X-ray fluoroscopy (XRF), which guides ASP, visualizes tissue poorly
and does not convey depth information. Ultrasound is limited by device shadows and
constrained imaging windows. Alternatively, real-time MRI (rtMRI) provides excellent
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