Catheter visualization using locally induced, actively controlled field inhomogeneities

Glowinski, A.; Adam, Gerhard; Bücker, Arno; Neuerburg, J; Vaals, J. J. Van; Günther, Rolf W.

doi:10.1002/mrm.1910380214

Cited by 105 publications

(77 citation statements)

References 9 publications

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“…Active tracking utilizes locally sensitive transmit/receive coils for either localization (1) or visualization (2), or is based on the visualization of current-related local field inhomogeneities produced in a small loop (3). Localization of the coil is achieved in few milliseconds (ms) through acquisition of one-dimensional (1D) projections along all three spatial directions (X, Y, and Z).…”

mentioning

confidence: 99%

Automatic slice positioning (ASP) for passive real‐time tracking of interventional devices using projection‐reconstruction imaging with echo‐dephasing (PRIDE)

Patil

Bieri

Jhooti

et al. 2009

Magnetic Resonance in Med

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A novel and fast approach for passive real-time tracking of interventional devices using paramagnetic markers, termed "projection-reconstruction imaging with echo-dephasing" (PRIDE) is presented. PRIDE is based on the acquisition of echo-dephased projections along all three physical axes. Dephasing is preferably set to 4 within each projection ensuring that background tissues do not contribute to signal formation and thus appear heavily suppressed. However, within the close vicinity of the paramagnetic marker, local gradient fields compensate for the intrinsic dephasing to form an echo. Successful localization of the paramagnetic marker with PRIDE is demonstrated in vitro and in vivo in the presence of different types of off-resonance (air/tissue interfaces, main magnetic field inhomogeneities, etc). In order to utilize the PRIDE sequence for vascular interventional applications, it was interleaved with balanced steady-state free precession (bSSFP) to provide positional updates to the imaged slice using a dedi-

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mentioning

confidence: 99%

Automatic slice positioning (ASP) for passive real‐time tracking of interventional devices using projection‐reconstruction imaging with echo‐dephasing (PRIDE)

Patil

Bieri

Jhooti

et al. 2009

Magnetic Resonance in Med

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“…This is a typical MRactive tracking setting, in which the coil can actively "pick up" the MR gradient field [17] along the three principal directions for localization. By matching/tuning the receiver's LC components for a specific MRI scanner, these coils can be highly sensitive to very local field inhomogeneity [18] without adversely affecting the image quality, providing high resolution (0.6×0.6×0.6mm…”

Section: A Real-time Positional Tracking In Mrimentioning

confidence: 99%

MR Safe Robotic Manipulator for MRI-Guided Intracardiac Catheterization

Lee

Zhang

et al. 2018

IEEE/ASME Trans. Mechatron.

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Abstract-This article introduces a robotic manipulator to realize robot-assisted intra-cardiac catheterization in magnetic resonance imaging (MRI) environment. MRI can offer highresolution images to visualize soft tissue features such as scars or edema. We hypothesize that robotic catheterization, combined with the enhanced monitoring of lesions creation using MRI intraoperatively, will significantly improve the procedural safety, accuracy and effectiveness. This is designed particularly for cardiac electrophysiological (EP) intervention, which is an effective treatment of arrhythmia. We present the first MR Safe robot for intra-cardiac EP intervention. The robot actuation features small hysteresis, effective force transmission and quick response, which has been experimentally verified for its capability to precisely tele-manipulate a standard clinically used EP catheter. We also present timely techniques for real-time positional tracking in MRI and intra-operative image registration, which can be integrated with the presented manipulator to improve the performance of tele-operated robotic catheterization.Index Terms-MR Safe robot, robot-assisted intervention, MR image registration, positional tracking in MRI.

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“…A local signal change near the instrument can also be achieved by applying a direct current through an integrated wire-the current creates a local magnetic field that distorts the static magnetic field, resulting in a local signal void (37). In contrast to the passive marker this signal void can be controlled and even be switched off so that an automatic localization of the instruments is possible by subtracting two projection images with and without signal void.…”

Section: Direct Currentsmentioning

confidence: 99%

MR‐guided intravascular interventions: Techniques and applications

Bock

Wacker

2008

Magnetic Resonance Imaging

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Magnetic resonance imaging (MRI) offers several advantages over other imaging modalities that make it an attractive imaging tool for diagnostic and therapeutic procedures. This tremendous potential of MRI has provided the rationale for increased attention toward MR-guided endovascular interventions. MR guidance has been used recently to navigate endovascular catheters and deliver stents, vena cava filters, embolization materials, and septum closure devices. However, its potential goes beyond just copying existing procedures toward the development of new minimally invasive techniques that cannot be performed with conventional guiding techniques. Because of technical limitations and safety issues associated with some of the currently available devices, a limited number of clinical studies have been performed so far. The overall success for this developing field requires considerable interdisciplinary research within both the interventional and the MR community. Only through a combined effort can this complex technology find its way into clinical practice. This review discusses the hardware and software improvements that have helped to advance endovascular interventions under MR imaging guidance from a pure research tool to become a clinical reality. In addition, technical and safety issues specific to endovascular MR image guidance will be described and practical applications will be shown that take advantage of the benefits of MR for endovascular interventions.

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Catheter visualization using locally induced, actively controlled field inhomogeneities

Cited by 105 publications

References 9 publications

Automatic slice positioning (ASP) for passive real‐time tracking of interventional devices using projection‐reconstruction imaging with echo‐dephasing (PRIDE)

Automatic slice positioning (ASP) for passive real‐time tracking of interventional devices using projection‐reconstruction imaging with echo‐dephasing (PRIDE)

MR Safe Robotic Manipulator for MRI-Guided Intracardiac Catheterization

MR‐guided intravascular interventions: Techniques and applications

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