The role of imaging in percutaneous mitral valve repair.
Percutaneous, transcatheter mitral valve repair has recently been introduced and various strategies--loosely based on surgical techniques--are currently under clinical and preclinical evaluation. Since percutaneous mitral valve repair techniques are rather specific regarding both the underlying cause of mitral regurgitation and patient anatomy, careful preinterventional imaging using various techniques is required for appropriate patient selection and essential for procedural success. While echocardiography is the dominant imaging modality for determination of mitral regurgitation severity and etiology, other imaging modalities like contrast-enhanced multidetector computed tomography, magnetic resonance imaging, and fluoroscopy/angiography may play an important role in the preinterventional evaluation process. In addition, imaging is of utmost importance for procedural guidance and the combined use of various imaging modalities, commonly fluoroscopy and echocardiography, is needed in the catheterization laboratory to ensure safety and efficacy of mitral valve repair procedures. Finally, imaging is essential for an adequate patient follow-up aiming to control stable device positioning, persistency of the geometric modifications induced, and continuous reduction of mitral regurgitation. This review highlights the role of various imaging techniques during preinterventional evaluation, procedural guidance and follow-up in the setting of percutaneous mitral valve repair with special focus on edge-to-edge leaflet repair and indirect annuloplasty via the coronary sinus as the best-studied approaches to date.
Kahlert
Philipp
P
Department of Cardiology, West German Heart Center Essen, University Hospital Essen, University of Duisburg-Essen, Duisburg-Essen, Germany. Philipp.Kahlert@uk-essen.de
Plicht
Björn
B
Jánosi
Rolf Alexander
RA
Kamler
Markus
M
Kühl
Hilmar
H
Eggebrecht
Holger
H
Sack
Stefan
S
Buck
Thomas
T
Konorza
Thomas
T
Erbel
Raimund
R
D006350:Heart Valve Prosthesis; D019918:Heart Valve Prosthesis Implantation / Q000379:methods*; D006801:Humans; D019060:Minimally Invasive Surgical Procedures / Q000379:methods*; D008944:Mitral Valve Insufficiency / Q000175:diagnosis* / Q000601:surgery*; D019651:Plastic Surgery Procedures / Q000379:methods*; D025321:Surgery, Computer-Assisted / Q000379:methods*