Cryo-balloon reconstruction from two views

Kleinoeder, Andreas; Brost, Alexander; Bourier, Félix; Koch, Martin; Kurzidim, Klaus; Hornegger, Joachim; Strobel, Norbert

doi:10.1109/icip.2011.6116724

Cited by 3 publications

(4 citation statements)

References 16 publications

(22 reference statements)

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“…As shown in Figure 1, for example, 3-D information of the left atrium including marked regions for 3-D ablation lines can be superimposed onto 2-D live X-ray images [5]. Catheter tracking and object reconstruction from two views can help the user to evaluate how well a device was placed [6,7]. Moreover, cardiac and respiratory motion can be compensated for by catheter tracking as proposed by Brost et al [8].…”

Section: Description Of Purposementioning

confidence: 99%

Cryo-balloon catheter position planning using AFiT

et al. 2012

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Abstract. Atrial fibrillation (AFib) is the most common heart arrhythmia. In certain situations, it can result in life-threatening complications such as stroke and heart failure. For paroxsysmal AFib, pulmonary vein isolation (PVI) by catheter ablation is the recommended choice of treatment if drug therapy fails. During minimally invasive procedures, electrically active tissue around the pulmonary veins is destroyed by either applying heat or cryothermal energy to the tissue. The procedure is usually performed in electrophysiology labs under fluoroscopic guidance. Besides radio-frequency catheter ablation devices, so-called single-shot devices, e.g., the cryothermal balloon catheters, are receiving more and more interest in the electrophysiology (EP) community. Single-shot devices may be advantageous for certain cases, since they can simplify the creation of contiguous (gapless) lesion sets around the pulmonary vein which is needed to achieve PVI. In many cases, a 3-D (CT, MRI, or C-arm CT) image of a patient's left atrium is available. This data can then be used for planning purposes and for supporting catheter navigation during the procedure. Cryo-thermal balloon catheters are commercially available in two different sizes. We propose the Atrial Fibrillation Planning Tool (AFiT), which visualizes the segmented left atrium as well as multiple cryo-balloon catheters within a virtual reality, to find out how well cryo-balloons fit to the anatomy of a patient's left atrium. First evaluations have shown that AFiT helps physicians in two ways. First, they can better assess whether cryoballoon ablation or RF ablation is the treatment of choice at all. Second, they can select the proper-size cryo-balloon catheter with more confidence.Keywords: Atrial Fibrillation, Visualization, Catheter Ablation Planning, Electrophysiology, Cryo-balloon DESCRIPTION OF PURPOSEAs atrial fibrillation (AFib) is the most common heart arrhythmia [1], a lot of clinical and technical research focuses on how to improve the treatment further. In the past decade, pulmonary vein isolation (PVI) by catheter ablation has proven to be a safe and effective approach for dealing with paroxysmal AFib [2,3]. The goal of PVI is the electrical isolation of the left atrium (LA) from the pulmonary veins (PVs) to prevent propagation of electrical signals, which do not belong to the heart conduction system, from the PVs into the left atrium (LA). Isolation is achieved by creating a contiguous transmural lesions around the PVs with an ablation catheter. Besides radio-frequency (RF) catheter ablation which is currently the most common method, the use of single-shot devices is increasing. Compared to a point-by-point RF ablation strategy,

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Section: Description Of Purposementioning

confidence: 99%

Cryo-balloon catheter position planning using AFiT

et al. 2012

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“…As of now, there is no mapping system that offers support for cryo-balloon ablation procedures, as they do not carry any electrodes or position sensors [12,13]. Recent developments utilize image processing techniques to facilitate cryo-balloon navigation involving augmented fluoroscopy techniques [12,14,15]. These methods still need a high degree of manual interaction.…”

Section: Motivationmentioning

confidence: 99%

Cryo-balloon catheter localization in fluoroscopic images

et al. 2013

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Abstract. Minimally invasive catheter ablation has become the preferred treatment option for atrial fibrillation. Although the standard ablation procedure involves ablation points set by radio-frequency catheters, cryo-balloon catheters have even been reported to be more advantageous in certain cases. As electro-anatomical mapping systems do not support cryo-balloon ablation procedures, X-ray guidance is needed. However, current methods to provide support for cryo-balloon catheters in fluoroscopically guided ablation procedures rely heavily on manual user interaction. To improve this, we propose a first method for automatic cryo-balloon catheter localization in fluoroscopic images based on a blob detection algorithm. Our method is evaluated on 24 clinical images from 17 patients. The method successfully detected the cryoballoon in 22 out of 24 images, yielding a success rate of 91.6 %. The successful localization achieved an accuracy of 1.00 mm ± 0.44 mm. Even though our methods currently fails in 8.4 % of the images available, it still offers a significant improvement over manual methods. Furthermore, detecting a landmark point along the cryo-balloon catheter can be a very important step for additional post-processing operations.

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“…A method for sphere reconstruction has already been proposed in [12], but it turns out to be rather sensitive to noise [13]. The method presented by Kleinoeder et al [13] to reconstruct a cryo-balloon catheter from two views was proven to be more robust. It is well suited to compute a 3-D model even in the presence of noise.…”

Section: Introductionmentioning

confidence: 99%

“…In our approach, the cryo-balloon catheter is modeled as a sphere in 3-D. Methods to reconstruct ellipsoids either require three views [10] or additional 3-D information [11]. A method for sphere reconstruction has already been proposed in [12], but it turns out to be rather sensitive to noise [13]. The method presented by Kleinoeder et al [13] to reconstruct a cryo-balloon catheter from two views was proven to be more robust.…”

Section: Introductionmentioning

confidence: 99%

Navigation for fluoroscopy-guided cryo-balloon ablation procedures of atrial fibrillation

et al. 2012

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Abstract. Atrial fibrillation (AF), the most common arrhythmia, has been identified as a major cause of stroke. The current standard in interventional treatment of AF is the pulmonary vein isolation (PVI). PVI is guided by fluoroscopy or non-fluoroscopic electro-anatomic mapping systems (EAMS). Either classic point-to-point radio-frequency (RF) catheter ablation or so-called single-shot-devices like cryo-balloons are used to achieve electrical isolation of the pulmonary veins and the left atrium (LA). Fluoroscopy-based systems render overlay images from pre-operative 3-D data sets which are then merged with fluoroscopic imaging, thereby adding detailed 3-D information to conventional fluoroscopy. EAMS provide tracking and visualization of RF catheters by means of electro-magnetic tracking. Unfortunately, current navigation systems, fluoroscopy-based or EAMS, do not provide tools to localize and visualize single-shot-devices like cryo-balloon catheters in 3-D. We present a prototype software for fluoroscopy-guided ablation procedures that is capable of superimposing 3-D datasets as well as reconstructing cyro-balloon catheters in 3-D. The 3-D cyro-balloon reconstruction was evaluated on 9 clinical data sets, yielding a reprojected 2-D error of 1.72 mm ± 1.02 mm

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Cryo-balloon reconstruction from two views

Cited by 3 publications

References 16 publications

Cryo-balloon catheter position planning using AFiT

Cryo-balloon catheter position planning using AFiT

Cryo-balloon catheter localization in fluoroscopic images

Navigation for fluoroscopy-guided cryo-balloon ablation procedures of atrial fibrillation

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