Assessment of a carbon fibre MRI flatbed insert for radiotherapy treatment planning

“…The RFinduced heating effect of an in-house carbon fiber flatbed for a 3T MRI scanner was evaluated by using 2 different thermometry techniques. 55 Minimal temperature increases (<0.2 C) were observed as demonstrated by the temperatureetime profiles measured for 3 different imaging sequences. However, severe shading image artifacts were evident on both phantom and patient images caused by the magnetic susceptibility difference of the carbon fiber couch top.…”

Section: Immobilization and Accessory Devicesmentioning

confidence: 84%

Practical Safety Considerations for Integration of Magnetic Resonance Imaging in Radiation Therapy

Yang

et al. 2020

Practical Radiation Oncology

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Interest in integrating magnetic resonance imaging (MRI) in radiation therapy (RT) practice has increased dramatically in recent years owing to its unique advantages such as excellent soft tissue contrast and capability of measuring biological properties. Continuous real-time imaging for intrafractional motion tracking without ionizing radiation serves as a particularly attractive feature for applications in RT. Despite its many advantages, the integration of MRI in RT workflows is not straightforward, with many unmet needs. MR safety remains one of the key challenges and concerns in the clinical implementation of MR simulators and MR-guided radiation therapy systems in radiation oncology. Most RT staff are not accustomed to working in an environment with a strong magnetic field. There are specific requirements in RT that are different from diagnostic applications. A large variety of implants and devices used in routine RT practice do not have clear MR safety labels. RT-specific imaging pulse sequences focusing on fast acquisition, high spatial integrity, and continuous, real-time acquisition require additional MR safety testing and evaluation. This article provides an overview of MR safety tailored toward RT staff, followed by discussions on specific requirements and challenges associated with MR safety in the RT environment. Strategies and techniques for developing an MR safety program specific to RT are presented and discussed.

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“…This can cause image distortion and localised heating as a result of eddy currents. In consequence, carbon fibre boards are not used in MRI systems [3]. The test samples were placed directly underneath a test object and imaging performed.…”

Section: Medical Imaging Compatibility Evaluationmentioning

confidence: 99%

A natural fibre reinforced composite material for multi-modal medical imaging and radiotherapy treatment

et al. 2019

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There is strong clinical need for a class of materials compatible with all common medical imaging modalities including Magnetic Resonance Imaging and X-Ray Computed Tomography which provide minimum attenuation to high intensity X-Ray photons used in Radiotherapy treatment, to improve patient outcomes and recovery times. In this work, we present a new natural fibre composite comprising wood pulp derived fibres embedded in polyester resin and bonded to expanded polystyrene cores. The resulting structure is demonstrated to have low visibility on Magnetic Resonance Imaging, X-Ray megavoltage imaging and Computed Tomography and to be less attenuating to radiotherapy photons than the commonly used carbon fibre or glass fibre reinforced composite materials. It is anticipated that this new material will facilitate improved radiotherapy planning and thus treatment outcomes.

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Assessment of a carbon fibre MRI flatbed insert for radiotherapy treatment planning

Cited by 18 publications

References 17 publications

Task group 284 report: magnetic resonance imaging simulation in radiotherapy: considerations for clinical implementation, optimization, and quality assurance

Task group 284 report: magnetic resonance imaging simulation in radiotherapy: considerations for clinical implementation, optimization, and quality assurance

Practical Safety Considerations for Integration of Magnetic Resonance Imaging in Radiation Therapy

A natural fibre reinforced composite material for multi-modal medical imaging and radiotherapy treatment

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