Evaluation of the use of multimodality skin markers for the registration of pre-procedure cardiac MR images and intra-procedure x-ray fluoroscopy images for image guided cardiac electrophysiology procedures - art. no. 69181R

K Rhode, Y L Ma, A Chandrasena, A King, G Gao, P Chinchapatnam, M Sermesant, D Hawkes, T Schaeffter, J Gill, R Razavi

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

Abstract

This paper presents the evaluation of the use of multimodality skin markers for the registration of cardiac magnetic resonance (MR) image data to x-ray fluoroscopy data for the guidance of cardiac electrophysiology procedures. The approach was validated using a phantom study and 3 patients undergoing pulmonary vein (PV) isolation for the treatment of paroxysmal atrial fibrillation. In the patient study, skin markers were affixed to the patients' chest and used to register pre-procedure cardiac MR image data to intra-procedure fluoroscopy data. Registration errors were assessed using contrast angiograms of the left atrium that were available in 2 out of 3 cases. A clinical expert generated "gold standard" registrations by adjusting the registration manually. Target registration errors (TREs) were computed using points on the PV ostia. Ablation locations were computed using biplane x-ray imaging. Registration errors were further assessed by computing the distances of the ablation points to the registered left atrial surface for all 3 patients. The TREs were 6.0 & 3.1 mm for patients 1 & 2. The mean ablation point errors were 6.2, 3.8, & 3.0mm for patients 1, 2, & 3. These results are encouraging in the context of a 5mm clinical accuracy requirement for this type of procedure. We conclude that multimodality skin markers have the potential to provide anatomical image integration for x-ray guided cardiac electrophysiology procedures, especially if coupled with an accurate respiratory motion compensation strategy
Original languageEnglish
Title of host publicationMedical Imaging 2008: Visualization, Image-Guided Procedures, and Modeling, Pts 1 and 2
Place of PublicationBELLINGHAM
PublisherSPIE - INT SOC OPTICAL ENGINEERING
PagesR9181 - R9181
ISBN (Print)0277-786X
Publication statusPublished - 2008
EventMedical Imaging 2008 Conference - San Diego, CA
Duration: 1 Jan 2008 → …

Publication series

NamePROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE)

Conference

ConferenceMedical Imaging 2008 Conference
CitySan Diego, CA
Period1/01/2008 → …

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