title: Myocardial motion estimation combining tissue doppler and B-mode echocardiographic images.
abstract: We present a registration framework that combines both tissue Doppler and B-mode echocardiographic sequences. The estimated spatiotemporal transform is diffeomorphic, and calculated by modeling its corresponding velocity field using continuous B-splines. A new cost function using both B-mode image voxel intensities and Doppler velocities is also proposed. Registration accuracy was evaluated on synthetic data with known ground truth. Results showed that our method allows quantifying wall motion with higher accuracy than when using a single modality. On patient data, both displacement and velocity curves were compared with the ones obtained from widely used commercial software using either B-mode images or TDI. Our method demonstrated to be more robust to image noise while being independent from the beam angle.
authors.affiliation: Department of Information and Communication Technologies, Universitat Pompeu Fabra, Barcelona, Spain.
authors.forename: Antonio R
authors.initials: AR
authors.lastname: Porras
authors.affiliation: Philips Research, Medisys, Suresnes, France.
authors.forename: Mathieu
authors.initials: M
authors.lastname: De Craene
authors.affiliation: Hospital Clinic-IDIBAPS-Universitat de Barcelona, Spain.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Duchateau
authors.affiliation: Hospital Clinic-IDIBAPS-Universitat de Barcelona, Spain.
authors.forename: Marta
authors.initials: M
authors.lastname: Sitges
authors.affiliation: Department of Information and Communication Technologies, Universitat Pompeu Fabra, Barcelona, Spain.
authors.forename: Bart H
authors.initials: BH
authors.lastname: Bijnens
authors.affiliation: Department of Information and Communication Technologies, Universitat Pompeu Fabra, Barcelona, Spain.
authors.forename: Alejandro F
authors.initials: AF
authors.lastname: Frangi
authors.affiliation: Department of Information and Communication Technologies, Universitat Pompeu Fabra, Barcelona, Spain.
authors.forename: Gemma
authors.initials: G
authors.lastname: Piella
mesh_terms: D000328:Adult; D000465:Algorithms; D015150:Echocardiography, Doppler / Q000379:methods*; D054459:Elasticity Imaging Techniques / Q000379:methods*; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D007090:Image Interpretation, Computer-Assisted / Q000379:methods; D008297:Male; D009068:Movement; D064847:Multimodal Imaging / Q000379:methods*; D009200:Myocardial Contraction; D010363:Pattern Recognition, Automated / Q000379:methods*; D013382:Subtraction Technique; D018487:Ventricular Dysfunction, Left / Q000000981:diagnostic imaging* / Q000503:physiopathology*