MRDust

MRI is a powerful diagnostic tool that provides detailed anatomical structure and physiological information. However, functional MRI techniques are indirect and low resolution. We design wireless implantable sensors that measure high-resolution physiological information, and augment MR images with the measured data by actively modulating the image voxels with an on-chip micro-coil. The implant performs 1) ultrasonic energy harvesting and downlink data communication 2) physiological signal sensing and storage 3) data uplink by modulating MR images.

We designed a 0.9mm x 1mm chip that demonstrates MR image modulation when synced-up with Spin-echo EPI sequences!

To read more about this work, check out the following publications:

[1] Zhao, Biqi Rebekah, et al. “The MRDust: An implantable neural interface powered via focused ultrasound with data communication via MR image modulation.” Proceedings of the 32nd Annual Meeting of ISMRM. 2023.
[2] B. R. Zhao et al., “The MRDust: Wireless Data Uplink & Localization via Magnetic Resonance Image Modulation,” 2024 46th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), Orlando, FL, USA, 2024, pp. 1-4, doi: 10.1109/EMBC53108.2024.10781942.