Sensor-Based Electromagnetic Navigation (Mediguide®): How Accurate Is It? A Phantom Model Study.
J Cardiovasc Electrophysiol
; 26(10): 1140-5, 2015 Oct.
Article
en En
| MEDLINE
| ID: mdl-26086594
ABSTRACT
BACKGROUND:
Data about localization reproducibility as well as spatial and visual accuracy of the new MediGuide® sensor-based electroanatomic navigation technology are scarce. We therefore sought to quantify these parameters based on phantom experiments. METHODS ANDRESULTS:
A realistic heart phantom was generated in a 3D-Printer. A CT scan was performed on the phantom. The phantom itself served as ground-truth reference to ensure exact and reproducible catheter placement. A MediGuide® catheter was repeatedly tagged at selected positions to assess accuracy of point localization. The catheter was also used to acquire a MediGuide®-scaled geometry in the EnSite Velocity® electroanatomic mapping system. The acquired geometries (MediGuide®-scaled and EnSite Velocity®-scaled) were compared to a CT segmentation of the phantom to quantify concordance. Distances between landmarks were measured in the EnSite Velocity®- and MediGuide®-scaled geometry and the CT dataset for Bland-Altman comparison. The visualization of virtual MediGuide® catheter tips was compared to their corresponding representation on fluoroscopic cine-loops. Point localization accuracy was 0.5 ± 0.3 mm for MediGuide® and 1.4 ± 0.7 mm for EnSite Velocity®. The 3D accuracy of the geometries was 1.1 ± 1.4 mm (MediGuide®-scaled) and 3.2 ± 1.6 mm (not MediGuide®-scaled). The offset between virtual MediGuide® catheter visualization and catheter representation on corresponding fluoroscopic cine-loops was 0.4 ± 0.1 mm.CONCLUSIONS:
The MediGuide® system shows a very high level of accuracy regarding localization reproducibility as well as spatial and visual accuracy, which can be ascribed to the magnetic field localization technology. The observed offsets between the geometry visualization and the real phantom are below a clinically relevant threshold.Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Procedimientos Quirúrgicos Cardiovasculares
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Ablación por Catéter
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Mapeo del Potencial de Superficie Corporal
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Cirugía Asistida por Computador
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Magnetismo
Tipo de estudio:
Diagnostic_studies
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Evaluation_studies
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Prognostic_studies
Límite:
Humans
Idioma:
En
Revista:
J Cardiovasc Electrophysiol
Asunto de la revista:
ANGIOLOGIA
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CARDIOLOGIA
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FISIOLOGIA
Año:
2015
Tipo del documento:
Article