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

Patil, Sunil; Bieri, Oliver; Jhooti, Permi; Scheffler, Klaus

doi:10.1002/mrm.22080

Cited by 21 publications

(14 citation statements)

References 24 publications

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“…This subtraction leads to an undesired increased sensitivity to motion and flow artifacts 39 . The ability to automatically update the image plane with changes in position of a device using negative contrast susceptibility markers was recently shown, however, by interleaving a SSFP sequence with a “projection-reconstruction imaging with echo-dephasing” (PRIDE) sequence 58 . The latter sequence detects the focal area of susceptibility artifact due to the marker on an image along all three physical axes.…”

Section: Advantages and Disadvantages Relative To Active Trackingmentioning

confidence: 99%

Magnetic Resonance–Guided Passive Catheter Tracking for Endovascular Therapy

Settecase

Martin

Lillaney

et al. 2015

Magnetic Resonance Imaging Clinics of North America

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Synopsis The use of MR guidance for endovascular intervention is appealing due to its lack of ionizing radiation, high-contrast visualization of vessel walls and adjacent soft tissues, multiplanar capabilities, and potential to incorporate functional information such as flow, fluid dynamics, perfusion, or cardiac motion. Concurrent advances in the design of “real-time” MR fluoroscopy pulse sequences and the development of MR compatible endovascular devices have facilitated progress from initial in vitro and animal feasibility studies of the initial use of MR guidance for endovascular interventions to human clinical applications. This review highlights current state-of-the-art imaging techniques and hardware used for passive tracking of endovascular devices in interventional MRI, including negative contrast, passive contrast, non-proton multispectral, and direct current techniques. The advantages and disadvantages of passive tracking relative to active tracking are also summarized.

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Section: Advantages and Disadvantages Relative To Active Trackingmentioning

confidence: 99%

Magnetic Resonance–Guided Passive Catheter Tracking for Endovascular Therapy

Settecase

Martin

Lillaney

et al. 2015

Magnetic Resonance Imaging Clinics of North America

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“…These have shown to overcome the heating risks but would further increase challenges for the design and production of these, mainly single use, catheters. Hence, widespread use of active tracking in humans during iMRI is still limited due to the system complexity and design challenges (8) to overcome safety hazards and achieve the mechanical properties (i.e. torque transmission and elasticity) for the used clinical devices.…”

Section: Discussionmentioning

confidence: 99%

“…Over the past decades, several device visualization and tracking methods have been developed for iMRI, using either passive susceptibility markers (7, 8), a wirelessly connected resonant circuit (9) (wRC), or active micro receive coils (10) that require a physical (wire based) connection to the MR scanner.…”

Section: Introductionmentioning

confidence: 99%

Wireless MR tracking of interventional devices using phase-field dithering and projection reconstruction

Rube

Holbrook

Cox

et al. 2014

Magnetic Resonance Imaging

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Purpose Device tracking is crucial for interventional MRI (iMRI) because conventional device materials do not contribute to the MR signal, may cause susceptibility artifacts and are generally invisible if moved out of the scan plane. A robust method for wireless tracking and dynamic guidance of interventional devices equipped with wirelessly connected resonant circuits (wRC) is presented. Methods The proposed method uses weak spatially-selective excitation pulses with very low flip angle (0.3°), a Hadamard multiplexed tracking scheme and employs phase-field dithering to obtain the 3D position of a wRC. RF induced heating experiments (ASTM protocol) and balloon angioplasties of the iliac artery were conducted in a perfused vascular phantom and three Thiel soft-embalmed human cadavers. Results Device tip tracking was interleaved with various user-selectable fast pulse sequences receiving a geometry update from the tracking kernel in less than 30 ms. Integrating phase-field dithering significantly improved our tracking robustness for catheters with small diameters (4–6 French). The volume root mean square distance error was 2.81 mm (standard deviation: 1.31 mm). No significant RF induced heating (<0.6°C) was detected during heating experiments. Conclusion This tip tracking approach provides flexible, fast and robust feedback loop, intuitive iMRI scanner interaction, does not constrain the physician and delivers very low specific absorption rates. Devices with wRC can be exchanged during a procedure without modifications to the iMRI setup or the pulse sequence. A drawback of our current implementation is that position information is available for a single tracking coil only. This was satisfactory for balloon angioplasties of the iliac artery but further studies are required for complex navigation and catheter shapes before animal trials and clinical application.

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“…Complicated MRI sequence is required, taking significant time to process susceptibility artefacts in the high-resolution images for fast and accurate localization. Recently, paramagnetic markers can be automatically localized at high frequency (50 Hz), but with a relatively large positional error of ≤ 4.5mm when the MRI sequence PRIDE was used to acquire echo-phased projection in three principal axes [20].…”

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

Cited by 21 publications

References 24 publications

Magnetic Resonance–Guided Passive Catheter Tracking for Endovascular Therapy

Magnetic Resonance–Guided Passive Catheter Tracking for Endovascular Therapy

Wireless MR tracking of interventional devices using phase-field dithering and projection reconstruction

MR Safe Robotic Manipulator for MRI-Guided Intracardiac Catheterization

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