Related Experiment Video
Updated: May 24, 2025
06:58
Rapid Homogeneous Detection of Biological Assays Using Magnetic Modulation Biosensing System
Published on: June 13, 2010
9.6K
The MRDust: Wireless Data Uplink & Localization via Magnetic Resonance Image Modulation
Abstract:
We propose a wireless data uplink and localization method for miniaturized sensor implants through magnetic resonance imaging (MRI). Local MRI signals are dynamically modulated by a micro-coil on an integrated circuit (IC). A proof-of-concept chip was designed and tested in a 3T scanner to demonstrate MR image modulation. The proposed uplink approach could enable simultaneous data readout from multiple implants with easy device localization and built-in image registration.
Related Concept Videos
01:24Magnetic Resonance Imaging
4.9K
Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
4.9K
01:05Atomic Nuclei: Magnetic Resonance
602
The number of nuclear spins aligned in the lower energy state is slightly greater than those in the higher energy state. In the presence of an external magnetic field, as the spins precess at the Larmor frequency, the excess population results in a net magnetization oriented along the z axis. When a pulse or a short burst of radio waves at the Larmor frequency is applied along the x axis, the coupling of frequencies causes resonance and flips the nuclear spins of the excess population from the...
602