MRI safety for leave-on powdered hair thickeners under 1.5-T and 3.0-T MRI: measurement of deflection force, MRI artifact, and evaluation of preexamination screening

Sato, Yusuke; Takeuchi, Tomokazu; Fuju, Atsuya; Takahashi, Masahiko; Hashimoto, Maiko; Okawa, Ryuya; Hayashi, Norio

doi:10.1007/s13246-023-01267-y

Cited by 3 publications

(1 citation statement)

References 17 publications

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“…Living tissues can also diminish the image quality due to susceptibility discrepancies, such as those between soft tissues and air holes in the brain. Moreover, embedded matters within the body such as prostheses and particularly metallic ones can also weaken image quality [34][35][36][37][38][39][40]. The image modification due to metallic materials, which present susceptibility variations, depends on the size, the shape and the direction with respect to B 1 [27,29,33].…”

Section: Image Artifactsmentioning

confidence: 99%

Assessment of a Functional Electromagnetic Compatibility Analysis of Near-Body Medical Devices Subject to Electromagnetic Field Perturbation

Razek

2023

Electronics

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This article aims to assess, discuss and analyze the disturbances caused by electromagnetic field (EMF) noise of medical devices used near living tissues, as well as the corresponding functional control via the electromagnetic compatibility (EMC) of these devices. These are minimally invasive and non-ionizing devices allowing various healthcare actions involving monitoring, assistance, diagnoses and image-guided medical interventions. Following an introduction of the main items of the paper, the different imaging methodologies are conferred, accounting for their nature, functioning, employment condition and patient comfort and safety. Then the magnetic resonance imaging (MRI) components and their fields, the consequential MRI-compatibility concept and possible image artifacts are detailed and analyzed. Next, the MRI-assisted robotic treatments, the possible robotic external matter introductions in the MRI scaffold, the features of MRI-compatible materials and the conformity control of such compatibility are analyzed and conferred. Afterward, the embedded, wearable and detachable medical devices, their EMF perturbation control and their necessary protection via shielding technologies are presented and analyzed. Then, the EMC control procedure, the EMF governing equations and the body numerical virtual models are conferred and reviewed. A qualitative methodology, case study and simple example illustrating the mentioned methodology are presented. The last section of the paper discusses potential details and expansions of the different notions conferred in the paper, in the perspective of monitoring the disturbances due to EMF noise of medical devices working near living tissues. This contribution highlights the possibility of the proper functioning of medical instruments working close to the patient’s body tissues and their protection by monitoring possible disturbances. Thanks to these commitments, various health recommendations have been taken into account. This concerns piezoelectric actuated robotics, assisted with MRI and the possible use of conductive materials in this imager under certain conditions. The safe use of onboard devices with EMF-insensitive or intelligently shielded materials with short exposure intervals is also of concern. Additionally, the need to monitor body temperature in case of prolonged exposure of onboard devices to EMF is analyzed in the Discussion section. Moreover, the use of virtual tissue models in EMC testing to achieve more realistic evaluation capabilities also features in the Discussion section.

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Section: Image Artifactsmentioning

confidence: 99%

Assessment of a Functional Electromagnetic Compatibility Analysis of Near-Body Medical Devices Subject to Electromagnetic Field Perturbation

Razek

2023

Electronics

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Assessment of Functional EMC Analysis of Near-Body Medical Devices Subject to EMF Perturbation

Razek

2023

Preprint

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This article aims to assess, discuss and analyze the disturbances caused by electromagnetic field (EMF) noise of medical devices used nearby living tissues, as well as the corresponding functional control via the electromagnetic compatibility (EMC) of these devices. These are minimally invasive and non-ionizing devices allowing various healthcare actions involving monitoring, assistance, diagnosis and image-guided medical interventions. Following to an introduction of the main items of the paper, the different imaging methodologies are conferred, accounting for their nature, functioning, employment condition and patient comfort and safety. Then the magnetic resonance imaging (MRI) components and their fields, the consequential MRI-compatibility concept and possible image artifacts are detailed and analyzed. Next, the MRI-assisted robotic treatments, the possible robotic external matter introductions in the imager, the features of MRI-compatible materials and the conformity control of MRI-compatibility, are analyzed and conferred. Afterward, the embedded, wearable and detachable medical devices, their EMF perturbation control and their necessary shielding protection technologies are presented and analyzed. Then, the EMC control procedure, the EMF governing equations, the body numerical virtual models, are conferred and reviewed. A qualitative methodology, case study, simple example illustrating the mentioned methodology is presented. The last Section of the paper discussed potential details and expansions of the different notions conferred in the paper, in the perspective of monitoring the disturbances due to EMF noise of medical devices working near living tissues.

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Image-Guided Surgical and Pharmacotherapeutic Routines as Part of Diligent Medical Treatment

Razek

2023

Applied Sciences

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This contribution is part of the objective of diligent universal care that ensures the well-being of a patient. It aims to analyze and propose enriched image-guided procedures for surgical interventions and restricted delivery of implanted drugs in minimally invasive and non-ionizing circumstances. This analysis is supported by a literature review conducted in two ways. The first aims to illustrate the importance of recent research and applications involved in different topics of the subject; this is mainly the case for the introduction’s literature. The second concerns the literature dedicated to having more detailed information in context; this mainly concerns the citations in the different sections of the article. The universal goals of medical treatments are intended to involve the well-being of the patient and allow medical personnel to test new therapies and carry out therapeutic training without risk to the patient. First, the various functionalities involved in these procedures and the concerns of the magnetic resonance imaging technique (MRI) and ultrasound imaging technique (USI), recent contributions to the subject are reviewed. Second, the intervention procedures guided by the image and the implemented actions are analyzed. Third, the components of the fields involved in MRI are examined. Fourth, the MRI control of the treatments, its performance and its compliance are analyzed. Compatibility with MRI via electromagnetic compatibility (EMC) is conferred and demonstrated for an actuation example. Fifth, the extension of the concepts mentioned in the article, in the context of patient comfort and the training of medical staff is proposed. The main contribution of this article is the identification of the different strategic aids needed in healthcare related to image-assisted robotics, non-ionized, minimally invasive and locally restrictive means. Furthermore, it highlights the benefits of using phantoms based on real biological properties of the body, digital twins under human control, artificial intelligence tools and augmented reality-assisted robotics.

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MRI safety for leave-on powdered hair thickeners under 1.5-T and 3.0-T MRI: measurement of deflection force, MRI artifact, and evaluation of preexamination screening

Cited by 3 publications

References 17 publications

Assessment of a Functional Electromagnetic Compatibility Analysis of Near-Body Medical Devices Subject to Electromagnetic Field Perturbation

Assessment of a Functional Electromagnetic Compatibility Analysis of Near-Body Medical Devices Subject to Electromagnetic Field Perturbation

Assessment of Functional EMC Analysis of Near-Body Medical Devices Subject to EMF Perturbation

Image-Guided Surgical and Pharmacotherapeutic Routines as Part of Diligent Medical Treatment

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