University of Twente Student Theses
An accessible method for measuring local SAR to assess the risk of skin-bore contact during magnetic resonance imaging.
Spenkelink, D. (2023) An accessible method for measuring local SAR to assess the risk of skin-bore contact during magnetic resonance imaging.
|
PDF
2MB |
| Abstract: | Burn injuries due to skin contact with the bore wall of a Magnetic Resonance Imaging (MRI) scanner poses a threat to patient safety. To date, research on these injuries is limited to one simulation-based study. The underlying mechanism is still poorly understood, electromagnetic simulations have not been validated and the patient risk is unknown. The goal of this thesis is to develop a phantom-based method to measure local heating at skin-bore contact points to advance the research on these type of burn injuries. Based on literature and electromagnetic simulations, the stray electric fields are identified as the potential mechanism behind skin-bore contact injuries. Through simulations, it is found that a cone phantom can be a viable replacement for a human elbow in a phantom-based skin-bore contact experiment. A novel method has been developed that can determine local heating and Specific Absorption Rate (SAR) through heat diffusion compensation on the measurements of two temperature probes. This method is likely applicable to experiments outside the context of skin-bore contact as well. These findings have been combined in an experiment on a 1.5T MRI scanner showing that the developed method can successfully measure heating and local SAR at skin-bore contact points. |
| Item Type: | Essay (Master) |
| Faculty: | TNW: Science and Technology |
| Programme: | Biomedical Engineering MSc (66226) |
| Link to this item: | https://purl.utwente.nl/essays/94637 |
| Export this item as: | BibTeX EndNote HTML Citation Reference Manager |
Show download statistics for this publication
Show download statistics for this publicationRepository Staff Only: item control page