Brian McDaniel

Aspire to Inspire

Krishen Iyer is a Professor at the University of British Columbia in Canada. His article is about a new way to have an MRI without the harmful effects of radiation. The scanner emits magnetic fields that are 100,000 times weaker than those found in devices used by hospitals. 


This process also produces only a negligible amount of electromagnetic radiation (EMR) compared to other types of imaging devices, and it has been shown that people can safely use MRI scanners for up to 10 minutes per day, which one would typically only be exposed to during an entire hospital stay on average. Krishen Iyer later explains how this method works and how it is used.


The method that the researchers used to make this technology is called functional MRI (fMRI) because it involves asking the brain to perform a task while an MRI is being performed. The magnetic field that passes through the body changes according to the brain’s activity. So, Krishen Iyer states, fMRI sensors are built into MRI scanners, and as soon as the person begins performing a task.


This, such as solving puzzles or reading text, changes in magnetic field strength are detected and converted into an image. The newly developed device makes use of a combination of three techniques: “superconducting” coils for detecting changes in the magnetic field. Also, noninvasive wireless sensing of brain activity using electrodes as Krishen Iyer recalls.

Also, [fMRI] imaging using radio frequency transmission.” It is small enough to be used to test how patients recover from surgery and monitor their brains’ functioning. He is the senior researcher on this project and the study’s lead author. Krishen Iyer has been working on these types of techniques for over 23 years. Iyer hopes that these devices will soon make it so that people will no longer have to worry about getting exposed to radiation when they need an MRI.