Automatic segmentation of rotational x-ray images for anatomic intra-procedural surface generation in atrial fibrillation ablation procedures

IEEE Transactions on Medical Imaging
Robert ManzkeJürgen Weese

Abstract

Since the introduction of 3-D rotational X-ray imaging, protocols for 3-D rotational coronary artery imaging have become widely available in routine clinical practice. Intra-procedural cardiac imaging in a computed tomography (CT)-like fashion has been particularly compelling due to the reduction of clinical overhead and ability to characterize anatomy at the time of intervention. We previously introduced a clinically feasible approach for imaging the left atrium and pulmonary veins (LAPVs) with short contrast bolus injections and scan times of approximately 4 -10 s. The resulting data have sufficient image quality for intra-procedural use during electro-anatomic mapping (EAM) and interventional guidance in atrial fibrillation (AF) ablation procedures. In this paper, we present a novel technique to intra-procedural surface generation which integrates fully-automated segmentation of the LAPVs for guidance in AF ablation interventions. Contrast-enhanced rotational X-ray angiography (3-D RA) acquisitions in combination with filtered-back-projection-based reconstruction allows for volumetric interrogation of LAPV anatomy in near-real-time. An automatic model-based segmentation algorithm allows for fast and accurate LAPV mesh genera...Continue Reading

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Citations

Jun 22, 2012·Medical & Biological Engineering & Computing·Olaf DösselGunnar Seemann
May 7, 2014·Europace : European Pacing, Arrhythmias, and Cardiac Electrophysiology : Journal of the Working Groups on Cardiac Pacing, Arrhythmias, and Cardiac Cellular Electrophysiology of the European Society of Cardiology·Flavia Ravelli, Michela Masè
Nov 18, 2011·Radiology Research and Practice·Andrew D'Silva, Matthew Wright
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Aug 31, 2018·Cardiology Research and Practice·Azira KhalilKhin Wee Lai
Mar 12, 2011·The International Journal of Cardiovascular Imaging·Jonathan G SchwartzJohn D Carroll

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