Highly Accelerated Free-breathing ECG-Triggered Contrast-Enhanced Pulmonary Vein Angiography with Isotropic Spatial Resolution
Sbastien Roujol 1 , Murilo Foppa 1 , Tamer A. Basha 1 , Mehmet Akakaya 1 , Kraig V Kissinger 1 , Beth Goddu 1 , Sophie Berg 1 , Warren J. Manning 1,2 , and Reza Nezafat 1
Department of Medicine, Beth Israel
Deaconess Medical Center / Harvard Medical School,
Boston, MA, United States,
of Radiology, Beth Israel Deaconess Medical Center /
Harvard Medical School, Boston, MA, United States
Contrast-enhanced pulmonary vein MR-angiography (CE-PV
MRA) is commonly performed before and after pulmonary
vein isolation procedures to assess PV anatomy to detect
potential post-procedural complications such as PV
stenosis. CE-PV MRA is clinically acquired within a
prolonged breath-hold at contrast arrival in the PVs.
This sequence is not ECG triggered and can lead to
motion-induced blurring artifacts and over-estimation of
the PV size. In addition, this sequence requires an
accurate initiation at contrast arrival in the PVs which
may fail in some patients. Therefore, the development of
improved PV-MRA protocol is desirable. In this study, we
sought to investigate the feasibility of a
highly-accelerated ECG-triggered CE-PV MRA with
isotropic spatial resolution using compressed sensing.
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