naa a22 4500 510807933 CHVBK 20180411083426.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s11548-012-0809-z doi (NATIONALLICENCE)springer-10.1007/s11548-012-0809-z A pilot study on magnetic navigation for transcatheter aortic valve implantation using dynamic aortic model and US image guidance [Elektronische Daten] [Zhe Luo, Junfeng Cai, Lixu Gu] PurposeIn this paper, we propose a pilot study for transcatheter aortic valve implantation guided by an augmented magnetic tracking system (MTS) with a dynamic aortic model and intra-operative ultrasound (US) images. Methods The dynamic 3D aortic model is constructed from the preoperative 4D computed tomography, which is animated according to the real-time electrocardiograph (ECG) input of patient. Before the procedure, the US probe calibration is performed to map the US image coordinate to the tracked device coordinate. A temporal alignment is performed to synchronize the ECG signals, the intra-operative US image and the tracking information. Thereafter, with the assistance of synchronized ECG signals, the spatial registration is performed by using a feature-based registration. Then the augmented MTS guides the surgeon to confidently position and deploy the transcatheter aortic valve prosthesis to the target. ResultsThe approach was validated by US probe calibration evaluation and animal study. The US calibration accuracy achieved $$1.37\pm 0.43\, \text{ mm}$$ , whereas in the animal study on three porcine subjects, fiducial, target, deployment distance and tilting errors reached $$3.16\pm 0.55\,\text{ mm}$$ , $$3.80\pm 1.83\,\text{ mm}$$ , $$3.13\pm 1.12\,\text{ mm}$$ and $$5.87\pm 2.35^{\circ }$$ , respectively. ConclusionOur pilot study has revealed that the proposed approach is feasible and accurate for delivery and deployment of transcatheter aortic valve prosthesis. CARS, 2013 Magnetic navigation nationallicence Transcatheter aortic valve implantation nationallicence Intra-operative US image nationallicence Dynamic aortic model nationallicence Preoperative planning and registration nationallicence Luo Zhe School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China aut Cai Junfeng Department of Cardiosurgery, Ruijin Hospital, Shanghai, China aut Gu Lixu School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China aut International Journal of Computer Assisted Radiology and Surgery Springer Berlin Heidelberg 8/4(2013-07-01), 677-690 1861-6410 8:4<677 2013 8 11548 https://doi.org/10.1007/s11548-012-0809-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11548-012-0809-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Luo Zhe School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China aut NATIONALLICENCE 700 1- Cai Junfeng Department of Cardiosurgery, Ruijin Hospital, Shanghai, China aut NATIONALLICENCE 700 1- Gu Lixu School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China aut NATIONALLICENCE 773 0- International Journal of Computer Assisted Radiology and Surgery Springer Berlin Heidelberg 8/4(2013-07-01), 677-690 1861-6410 8:4<677 2013 8 11548 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer