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Reconfigurable MRI technology for low-SAR imaging of deep brain stimulation at 3T: Application in bilateral leads, fully-implanted systems, and surgically modified lead trajectories

Ehsan Kazemivalipour, Boris Keil, Alireza Vali, Sunder Rajan, Behzad Elahi, Ergin Atalar, Lawrence L. Wald, Joshua Rosenow, Julie Pilitsis, Laleh Golestanirad
2019 NeuroImage  
A simple surgical modification in trajectory of implanted leads was demonstrated to increase the SAR reduction efficiency of the rotating coil to >90% in a patient with a fully implanted bilateral DBS  ...  We developed patient-derived models of bilateral DBS leads and fully implanted DBS systems from postoperative CT images of 13 patients and performed finite element simulations to calculate SAR amplification  ...  Our results suggest that the reconfigurable MRI technology offers a promising solution to the problem of RF safety of deep brain stimulation implants at 3T.  ... 
doi:10.1016/j.neuroimage.2019.05.015 pmid:31096058 pmcid:PMC7266624 fatcat:ouk7ln3q7bdxjp3ii7wjqfbtpe

Safety and image quality at 7T MRI for deep brain stimulation systems: Ex vivo study with lead-only and full-systems

Bhumi Bhusal, Jason Stockmann, Bastien Guerin, Azma Mareyam, John Kirsch, Lawrence L. Wald, Mark J. Nolt, Joshua Rosenow, Roberto Lopez-Rosado, Behzad Elahi, Laleh Golestanirad, Haydar Celik
2021 PLoS ONE  
The aim of this study was to provide an assessment of safety and image quality of ultra-high field magnetic resonance imaging at 7 T in patients with deep brain stimulation implants.  ...  for patients with deep brain stimulation (DBS) implants.  ...  Reconfigurable MRI technology for low-SAR imaging of deep brain stimulation at 3T: Application in bilateral leads, fully-implanted systems, and surgically modified lead trajectories.  ... 
doi:10.1371/journal.pone.0257077 pmid:34492090 pmcid:PMC8423254 fatcat:yjxz7mrhoncwfnuqfye5p6ccl4

Proceedings of the World Molecular Imaging Congress 2021, October 5-8, 2021: General Abstracts

2022 Molecular Imaging and Biology  
Body : Purpose: To demonstrate an application of fast iterative method to enhance contrast and image resolution in clinical MRI imaging.  ...  In general, the values of CNR reached a plateau at around 8 iterations with an average improvement factor of about 1.7 for processed MRI images.  ...  The nanocluster system with a high selectivity showed the potential for fluorescence imaging and the integrating of gold and MMAE demonstrated excellent concurrent chemotherapy-radiotherapy efficacy, which  ... 
doi:10.1007/s11307-021-01693-y pmid:34982365 pmcid:PMC8725635 fatcat:4sfb3isoyfdhfbiwxfr55gvqym