1. Subject-Specific, Helmet-Restraint, RF Coils for Awake, Non-Human Primate MR Imaging
- Author
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Nader Behdad, Alan B. McMillan, Bahareh Behzadnezhad, and Luis C. Populin
- Subjects
medicine.diagnostic_test ,business.industry ,020206 networking & telecommunications ,Magnetic resonance imaging ,02 engineering and technology ,Signal ,Imaging phantom ,03 medical and health sciences ,0302 clinical medicine ,Neuroimaging ,Region of interest ,Electromagnetic coil ,0202 electrical engineering, electronic engineering, information engineering ,Medicine ,Implant ,business ,030217 neurology & neurosurgery ,Radiofrequency coil ,Biomedical engineering - Abstract
In non-human primate [NHP] neuroimaging, the head needs to be immobilized. This is currently achieved via surgical implants; however, this method is invasive with risks of medical complications and limits the number of subjects that can enroll in a study due to the long waiting time after surgery for the implant area to heal and high cost. The purpose of this study is to demonstrate a non-invasive, subject-specific, restraint helmet with an integrated MRI RF coil. This system removes the need for invasive head post implantation and can be designed and implemented quickly at a low cost. Low dose computed tomography (CT) images were processed to create a subject-specific restraint helmet and structure of an RF coil. The helmet coil was 3D-printed from polylactic acid (PLA) plastic. The measured S 11 of the fabricated coil is −32 dB indicating a good match at 127.8 MHz (the frequency corresponding to 3T MRI). Imaging was performed on a MR spherical phantom, and a high signal- to- noise ratio of 924 in the region of interest was measured.
- Published
- 2018