Title :
A combined surface and volumetric approach for registration of patient specific models into left atrial cardiac ablation procedures
Author :
Rettmann, M.E. ; Holmes, D.R., III ; Dalegrave, C. ; Stanton, C. ; Johnson, S.B. ; Packer, D.L. ; Robb, R.A.
Author_Institution :
Coll. of Med., Biomed. Imaging Resource, Mayo Clinic, Rochester, MN, USA
fDate :
June 28 2009-July 1 2009
Abstract :
Accurate visualization and targeting of specific anatomic locations are key components for successful treatment in catheter based cardiac ablation therapy. In order to augment visualization tools such as bi-plane fluoroscopy and real-time ultrasound, recent work has focussed on registering detailed, patient-specific models into the procedure. Surface based techniques are a popular approach, however, challenges include sensitivity to both the number and as well as locations of selected surface points, thereby making registration accuracy dependent on operator experience as well as patient anatomy. In this work, we propose a new technique for registering preoperative models into patient space by combining a surface based method with a volumetric based approach. The volumetric approach utilizes points from the continuously tracked catheter which is sampled at a rate of five times per second. The technique is tested using data from a canine experiment with five ground truth fiducial markers. The combined registration technique has smaller mean errors for all fiducial markers as compared to using a surface based technique alone. The combined surface and volumetric approach is also more robust to surface point selection, thereby decreasing the sensitivity of point selection on the registration result.
Keywords :
anthropometry; biomedical ultrasonics; biothermics; cardiology; catheters; medical image processing; radiation therapy; radiofrequency heating; radiography; ultrasonic imaging; biplane fluoroscopic visualisation; canine model; catheter based cardiac ablation therapy; left atrial cardiac ablation procedures; patient specific models; preoperative model registeration; real time ultrasonic visualisation; registration accuracy; specific anatomic location targeting; specific anatomic location visualisation; surface approach; volumetric approach; Anatomy; Biomedical imaging; Cardiology; Catheters; Clouds; Medical treatment; Radio frequency; Ultrasonic imaging; Veins; Visualization; biomedical image processing; cardiac ablation; image guidance; left atrium;
Conference_Titel :
Biomedical Imaging: From Nano to Macro, 2009. ISBI '09. IEEE International Symposium on
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-3931-7
Electronic_ISBN :
1945-7928
DOI :
10.1109/ISBI.2009.5193245