Integration of myocardial scar identified by preoperative delayed contrast-enhanced MRI into a high-resolution mapping system for planning and guidance of VT ablation procedures

2017 ◽  
Author(s):  
M. E. Rettmann ◽  
A. Suzuki ◽  
S. Wang ◽  
N. Pottinger ◽  
J. Arter ◽  
...  
Keyword(s):  
High Resolution ◽  
Myocardial Scar ◽  
High Resolution Mapping ◽  
Enhanced Mri ◽  
Contrast Enhanced ◽  
Mapping System ◽  
Resolution Mapping ◽  
Vt Ablation ◽  
Contrast Enhanced Mri

The use of a high-resolution mapping system may facilitate standard clinical practice in VE and VT ablation

2019 ◽  
Vol 55 (3) ◽  
pp. 287-295
Author(s):  
Arian Sultan ◽  
Barbara Bellmann ◽  
Jakob Lüker ◽  
Tobias Plenge ◽  
Jan-Hendrik van den Bruck ◽  
...  
Keyword(s):  
Clinical Practice ◽  
High Resolution ◽  
High Resolution Mapping ◽  
Standard Clinical Practice ◽  
Mapping System ◽  
Resolution Mapping ◽  
Vt Ablation

scholarly journals P1464Acute and medium-term outcomes following ablation of complex scar-related atrial tachycardia using a high-resolution mapping system

EP Europace ◽  
2017 ◽  
Vol 19 (suppl_3) ◽  
pp. iii297-iii297
Author(s):  
R. Shi ◽  
K. Viswanathan ◽  
L. Mantziari ◽  
C. Butcher ◽  
E. Lim ◽  
...  
Keyword(s):  
High Resolution ◽  
Atrial Tachycardia ◽  
Medium Term ◽  
High Resolution Mapping ◽  
Mapping System ◽  
Resolution Mapping

scholarly journals High-resolution contrast-enhanced MRI of atherosclerosis with digital cardiac and respiratory gating in mice

2007 ◽  
Vol 58 (6) ◽  
pp. 1157-1163 ◽  
Author(s):  
Hasan Alsaid ◽  
Maher Sabbah ◽  
Zakaria Bendahmane ◽  
Odette Fokapu ◽  
Jacques Felblinger ◽  
...  
Keyword(s):  
High Resolution ◽  
Respiratory Gating ◽  
Enhanced Mri ◽  
Contrast Enhanced ◽  
Contrast Enhanced Mri

Pulmonary vein-gap re-entrant atrial tachycardia following atrial fibrillation ablation: an electrophysiological insight with high-resolution mapping

EP Europace ◽  
2019 ◽  
Vol 21 (7) ◽  
pp. 1039-1047 ◽  
Author(s):  
Seigo Yamashita ◽  
Masateru Takigawa ◽  
Arnaud Denis ◽  
Nicolas Derval ◽  
Yuichiro Sakamoto ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
High Resolution ◽  
Pulmonary Vein ◽  
Atrial Tachycardia ◽  
Atrial Fibrillation Ablation ◽  
P Wave ◽  
Conduction Time ◽  
High Resolution Mapping ◽  
Mapping System ◽  
Resolution Mapping

Aims The circuit of pulmonary vein-gap re-entrant atrial tachycardia (PV-gap RAT) after atrial fibrillation ablation is sometimes difficult to identify by conventional mapping. We analysed the detailed circuit and electrophysiological features of PV-gap RATs using a novel high-resolution mapping system. Methods and results This multicentre study investigated 27 (7%) PV-gap RATs in 26 patients among 378 atrial tachycardias (ATs) mapped with Rhythmia™ system in 281 patients. The tachycardia cycle length (TCL) was 258 ± 52 ms with P-wave duration of 116 ± 28 ms. Three types of PV-gap RAT circuits were identified: (A) two gaps in one pulmonary vein (PV) (unilateral circuit) (n = 17); (B) two gaps in the ipsilateral superior and inferior PVs (unilateral circuit) (n = 6); and (C) two gaps in one PV with a large circuit around contralateral PVs (bilateral circuit) (n = 4). Rhythmia™ mapping demonstrated two distinctive entrance and exit gaps of 7.6 ± 2.5 and 7.9 ± 4.1 mm in width, respectively, the local signals of which showed slow conduction (0.14 ± 0.18 and 0.11 ± 0.10m/s) with fragmentation (duration 86 ± 27 and 78 ± 23 ms) and low-voltage (0.17 ± 0.13 and 0.17 ± 0.21 mV). Twenty-two ATs were terminated (mechanical bump in one) and five were changed by the first radiofrequency application at the entrance or exit gap. Moreover, the conduction time inside the PVs (entrance-to-exit) was 138 ± 60 ms (54 ± 22% of TCL); in all cases, this resulted in demonstrating P-wave with an isoelectric line in all leads. Conclusion This is the first report to demonstrate the detailed mechanisms of PV-gap re-entry that showed evident entrance and exit gaps using a high-resolution mapping system. The circuits were variable and Rhythmia™-guided ablation targeting the PV-gap can be curative.

Mapping and ablation of clinical spontaneous perimitral atrial tachycardias using an ultra–high-resolution mapping system

Heart Rhythm ◽  
2020 ◽  
Author(s):  
Shinsuke Miyazaki ◽  
Kanae Hasegawa ◽  
Kazuya Yamao ◽  
Eri Ishikawa ◽  
Moe Mukai ◽  
...  
Keyword(s):  
High Resolution ◽  
High Resolution Mapping ◽  
Mapping System ◽  
Resolution Mapping

3D high-resolution contrast enhanced MRI of carotid atheroma — a technical update

2014 ◽  
Vol 32 (5) ◽  
pp. 594-597 ◽  
Author(s):  
Chengcheng Zhu ◽  
Umar Sadat ◽  
Andrew J. Patterson ◽  
Zhongzhao Teng ◽  
Jonathan H. Gillard ◽  
...  
Keyword(s):  
High Resolution ◽  
Enhanced Mri ◽  
Contrast Enhanced ◽  
Contrast Enhanced Mri
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