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Abstract #0658

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

1 Department of Medicine, Beth Israel Deaconess Medical Center / Harvard Medical School, Boston, MA, United States, 2 Department 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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