Tissue tracking imaging as a new modality for identifying the origin of idiopathic ventricular arrhythmias

Tada, Hiroshi; Toide, Hiroyuki; Naito, Shigeto; Ito, Sachiko; Kurosaki, Kenji; Kobayashi, Yasuyuki; Miyaji, Kohei; Yamada, Minoru; Nogami, Akihiko; Taniguchi, Koichi

doi:10.1016/j.amjcard.2004.10.047

Cited by 6 publications

(1 citation statement)

References 11 publications

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“…A similar approach using ultrasound for PVC ablation has been reported. Tada et al described the efficacy of tissue tracking imaging to estimate the foci before the ablation procedure [22] Our approach differed from this one in that our study used 3D electroanatomical mapping and the M‐mode, which are simple and easily available techniques. One of the characteristics of the M‐mode is its high resolution time, which can discriminate distance in 1 ms.…”

Section: Discussionmentioning

confidence: 99%

A new mapping method to estimate exit sites of ventricular arrhythmias using intracardiac echocardiography and M‐mode for catheter ablation

Inaba

Nitta

Kuroda

et al. 2017

Journal of Arrhythmia

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BackgroundCatheter ablation of premature ventricular complexes (PVCs) has been used as a curative therapy in many cases. Intracardiac ultrasound with a magnetic sensor probe has recently become available for catheter ablation. In this study, we assessed a new mapping method, contraction mapping, for determining the optimal ablation sites using intracardiac ultrasound and M-mode. This study sought to assess the accuracy of the new mapping method using intracardiac echocardiography.MethodsEighteen patients (10 males and eight females; mean age, 63±12 years) with 104 mapping points diagnosed as idiopathic PVCs were included in this study. At the mapping points, the time interval from the onset of the QRS to the onset of the contraction (QRS-c-time) and the local activation time were measured using M-mode with an intracardiac echo probe and using the conventional method. The correlation between the QRS-c-time and local activation time were studied.ResultsThe QRS-c-time was significantly correlated with the local activation time (activation time=−66.8+0.882 * QRS-c-time, R2=0.728, p<0.0001).ConclusionsContraction mapping could help determine the local activation time without the delivery of a catheter to the mapping points.

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Section: Discussionmentioning

confidence: 99%