• Art Jahnke

    Senior Contributing Editor

    Art Janke

    Art Jahnke began his career at the Real Paper, a Boston area alternative weekly. He has worked as a writer and editor at Boston Magazine, web editorial director at CXO Media, and executive editor in Marketing & Communications at Boston University, where his work was honored with many awards. Profile

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There are 7 comments on Speeding Up MRI Scans to Save Lives

  1. The article states that magnetic resonance imaging “exposes patients to radiation”. Unfortunately, the inference brought about by that short phrase is misleading. There is absolutely no ionizing radiation involved in the process of image acquisition with MRI (unlike other medical imaging modalities such as CT, radiography or nuclear medicine). The electromagnetic spectrum utilized in MRI is no more harmful to patients than that used in commercial communications (i.e. radio).

  2. Dear Christopher Fischer,

    Thank you for the comments on this article. The “radiation” in this article refers to “radio wave radiation“, as opposed to “ionizing radiation”; apologies for any confusion this may have caused. MRI employs static magnetic fields and sequences of radio waves to acquire images. The transmitted radio waves may be absorbed by the human body, and the absorbed power is termed the specific absorption rate (SAR). Due to the limitations imposed with regards to SAR, the power of radio waves in MRI is limited. The point we would like to address is that our nonlinear metamaterial for MRI does not increase the SAR in the human body, an important distinction from prior efforts in this space. Thank you for the comment and for giving us a chance to clarify this point.

    Best Regards,
    Xin Zhang

  3. Interesting article and genius concept … just saw it in my LinkedIn feed.

    So, since the SNR is increased by 5x to 10x, does that mean image voxel resolution is also increased. The current state of the art resolution specs is about 1 cubic mm, I believe. Will your solution increase it to a few 100 cubic microns or less?


  4. Dear David Musoke,

    Thank you for the comments. In MRI, there is a tradeoff between SNR and resolution. With a fixed time to acquire an image, we may acquire better spatial resolution with a decrease in signal-to-noise ratio (SNR) or decreased resolution with an increase in SNR. In the current demonstration, our SNR boost does not affect the resolution directly. However, the boosted SNR may be used to drive gains in resolution instead of saving scan time.

    Thank you for your interest in our work.

    Best Regards,
    Xin Zhang

  5. The article states following waiting period for MRI scan in India
    “Finding enough MRI time for waiting patients can be a problem, even in US hospitals, but in hospitals in countries like India, waiting periods of a year or more can put patients’ lives at risk.”

    Can you elaborate where can I find references that state a MRI scan in India takes more than a year?

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