Contrast-enhanced CMR in patients after percutaneous closure of the left atrial appendage: a pilot study.

ABSTRACT:

Background

To evaluate the feasibility and value of first-pass contrast-enhanced dynamic and post-contrast 3D CMR in patients after transcatheter occlusion of left atrial appendage (LAA) to identify incorrect placement and persistent leaks.

Methods

7 patients with different occluder systems (n = 4 PLAATO; n = 2 Watchman; n = 1 ACP) underwent 2 contrast-enhanced (Gd-DOTA) CMR sequences (2D TrueFISP first-pass perfusion and 3D-TurboFLASH) to assess localization, artifact size and potential leaks of the devices. Perfusion CMR was analyzed visually and semi-quantitatively to identify potential leaks.

Results

All occluders were positioned within the LAA. The ACP occluder presented the most extensive artifact size. Visual assessment revealed a residual perfusion of the LAA

SUBMITTER: Mohrs OK 

PROVIDER: S-EPMC3146401 | biostudies-literature | 2011 Jul

REPOSITORIES: biostudies-literature