نوع مقاله : Original Article(s)
1 دانشیار، دانشکدهی مهندسی پزشکی، دانشگاه امیر کبیر، تهران، ایران
2 دانشجوی کارشناسی ارشد، دانشکدهی مهندسی پزشکی، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، تهران، ایران
عنوان مقاله [English]
Background: In this study, we tried to choose the proper material to use on a magnetic resonance imaging (MRI)-compatible robot. The robot is to take soft tissue samples in an image guided process. Since this robot is made of MRI-compatible material, its links are invisible in the MR images. Finding such markers would enable us to distinguish the position of links in the images and as a result in the real world.Methods: Four materials compatible with magnetic environments, including liquid paraffin, nitroglycerin, vitamin E pills, and silicon oil, were tested to find the most appropriate one to be used as the marker. In addition to compatibility with MRI environment, the material had to have suitable contrast to avoid blurry images. The tests were performed in a Philips MRI system at 1 and 1.5 Tesla.Findings: Liquid paraffin, nitroglycerin, vitamin E pills, and silicon oil scored 50, 62.35, 45.6, and 53.15, respectively. Most of the evaluated factors were satisfied by nitroglycerin.Conclusion: After all tests and considerations, nitroglycerin was selected as the best material.