Calibration and evaluation of a magnetically tracked ICE probe for guidance of left atrial ablation therapy

Cristian A. Linte, Maryam E. Rettmann, Ben Dilger, Mia S. Gunawan, Shivaram P. Arunachalam, David R. Holmes III, Douglas L Packer, Richard A. Robb

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

The novel prototype system for advanced visualization for image-guided left atrial ablation therapy developed in our laboratory permits ready integration of multiple imaging modalities, surgical instrument tracking, interventional devices and electro-physiologic data. This technology allows subject-specific procedure planning and guidance using 3D dynamic, patient-specific models of the patient's heart, augmented with real-time intracardiac echocardiography (ICE). In order for the 2D ICE images to provide intuitive visualization for accurate catheter to surgical target navigation, the transducer must be tracked, so that the acquired images can be appropriately presented with respect to the patient-specific anatomy. Here we present the implementation of a previously developed ultrasound calibration technique for a magnetically tracked ICE transducer, along with a series of evaluation methods to ensure accurate imaging and faithful representation of the imaged structures. Using an engineering-designed phantom, target localization accuracy is assessed by comparing known target locations with their transformed locations inferred from the tracked US images. In addition, the 3D volume reconstruction accuracy is also estimated by comparing a truth volume to that reconstructed from sequential 2D US images. Clinically emulating validation studies are conducted using a patient-specific left atrial phantom. Target localization error of clinically-relevant surgical targets represented by nylon fiducials implanted within the endocardial wall of the phantom was assessed. Our studies have demonstrated 2.4 ± 0.8 mm target localization error in the engineering-designed evaluation phantoms, 94.8 ± 4.6 % volume reconstruction accuracy, and 3.1 ± 1.2 mm target localization error in the left atrial-mimicking phantom. These results are consistent with those disseminated in the literature and also with the accuracy constraints imposed by the employed technology and the clinical application.

Original languageEnglish (US)
Title of host publicationProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume8316
DOIs
StatePublished - 2012
EventMedical Imaging 2012: Image-Guided Procedures, Robotic Interventions, and Modeling - San Diego, CA, United States
Duration: Feb 5 2012Feb 7 2012

Other

OtherMedical Imaging 2012: Image-Guided Procedures, Robotic Interventions, and Modeling
CountryUnited States
CitySan Diego, CA
Period2/5/122/7/12

Fingerprint

echocardiography
Echocardiography
Ablation
Calibration
ablation
therapy
evaluation
probes
Transducers
Visualization
Imaging techniques
Catheters
Nylons
Fiducial Markers
Technology
Validation Studies
Navigation
Therapeutics
Ultrasonics
Surgical Instruments

Keywords

  • Calibration
  • Image-Guided Cardiac Procedures
  • Intra-operative Imaging
  • Localization and Tracking Technologies
  • Ultrasound Guidance

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Radiology Nuclear Medicine and imaging

Cite this

Linte, C. A., Rettmann, M. E., Dilger, B., Gunawan, M. S., Arunachalam, S. P., Holmes III, D. R., ... Robb, R. A. (2012). Calibration and evaluation of a magnetically tracked ICE probe for guidance of left atrial ablation therapy. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE (Vol. 8316). [83162P] https://doi.org/10.1117/12.912869

Calibration and evaluation of a magnetically tracked ICE probe for guidance of left atrial ablation therapy. / Linte, Cristian A.; Rettmann, Maryam E.; Dilger, Ben; Gunawan, Mia S.; Arunachalam, Shivaram P.; Holmes III, David R.; Packer, Douglas L; Robb, Richard A.

Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 8316 2012. 83162P.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Linte, CA, Rettmann, ME, Dilger, B, Gunawan, MS, Arunachalam, SP, Holmes III, DR, Packer, DL & Robb, RA 2012, Calibration and evaluation of a magnetically tracked ICE probe for guidance of left atrial ablation therapy. in Progress in Biomedical Optics and Imaging - Proceedings of SPIE. vol. 8316, 83162P, Medical Imaging 2012: Image-Guided Procedures, Robotic Interventions, and Modeling, San Diego, CA, United States, 2/5/12. https://doi.org/10.1117/12.912869
Linte CA, Rettmann ME, Dilger B, Gunawan MS, Arunachalam SP, Holmes III DR et al. Calibration and evaluation of a magnetically tracked ICE probe for guidance of left atrial ablation therapy. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 8316. 2012. 83162P https://doi.org/10.1117/12.912869
Linte, Cristian A. ; Rettmann, Maryam E. ; Dilger, Ben ; Gunawan, Mia S. ; Arunachalam, Shivaram P. ; Holmes III, David R. ; Packer, Douglas L ; Robb, Richard A. / Calibration and evaluation of a magnetically tracked ICE probe for guidance of left atrial ablation therapy. Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 8316 2012.
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