Interventional imaging: MR

Rothgang, Eva; Anderson, William S.; Breton, Élodie; Gangi, Afshin; Garnon, Julien; Hensen, Bennet; Judy, Brendan F.; Kägebein, Urte; Wacker, Frank

doi:10.1016/b978-0-12-816176-0.00032-6

Cited by 1 publication

(2 citation statements)

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“…For an efficient, safe, and effective procedure, it is important to continuously know where the interventional device is. [ 1 ] The results in this work are important as they try to find solutions to these problems in the form of a remotely controlled robotic system by developing its building blocks. Physicians can use these kinds of actuation systems to mark the needle's entry point and orientation or position an MRI marker while evaluating the real‐time images of the patient comfortably in the operator room.…”

Section: Discussionmentioning

confidence: 99%

“…Interventional MRI (iMRI), as a newly emerging field, helps guide minimally invasive medical operations not only with its imaging feedback but also with in vivo temperature, diffusion, ventilation, and perfusion 3D imaging capabilities. [ 1 ] Such field paved the way for the development of MRI‐compatible robotic actuation systems in an effort to overcome limited access of the confined in‐bore space of an MRI scanner and to further improve the placement accuracy of interventional medical tools. [ 2 ]…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Magnetic Resonance Imaging‐Compatible Optically Powered Miniature Wireless Modular Lorentz Force Actuators

et al. 2020

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Minimally invasive medical procedures under magnetic resonance imaging (MRI) guidance have significant clinical promise. However, this potential has not been fully realized yet due to challenges regarding MRI compatibility and miniaturization of active and precise positioning systems inside MRI scanners, i.e., restrictions on ferromagnetic materials and long conductive cables and limited space around the patient for additional instrumentation. Lorentz force‐based electromagnetic actuators can overcome these challenges with the help of very high, axial, and uniform magnetic fields (3–7 Tesla) of the scanners. Here, a miniature, MRI‐compatible, and optically powered wireless Lorentz force actuator module consisting of a solar cell and a coil with a small volume of 2.5 × 2.5 × 3.0 mm3 is proposed. Many of such actuator modules can be used to create various wireless active structures for future interventional MRI applications, such as positioning needles, markers, or other medical tools on the skin of a patient. As proof‐of‐concept prototypes toward such applications, a single actuator module that bends a flexible beam, four modules that rotate around an axis, and six modules that roll as a sphere are demonstrated inside a 7 Tesla preclinical MRI scanner.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%