Concurrent Volume Visualization of Real-Time fMRI

Khoa Tan Nguyen, Anders Eklund, Henrik Ohlsson, Frida Hernell, Patric Ljung, Camilla Forsell, Mats T. Andersson, Hans Knutsson, Anders Ynnerman
IEEE/EG Volume Graphics, page 53--60 - 2010
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We present a novel approach to interactive and concurrent volume visualization of functional Magnetic Resonance Imaging (fMRI). While the patient is in the scanner, data is extracted in real-time using state-of-the-art signal processing techniques. The fMRI signal is treated as light emission when rendering a patient-specific high resolution reference MRI volume, obtained at the beginning of the experiment. As a result, the brain glows and emits light from active regions. The low resolution fMRI signal is thus effectively fused with the reference brain with the current transfer function settings yielding an effective focus and context visualization. The delay from a change in the fMRI signal to the visualization is approximately 2 seconds. The advantage of our method over standard 2D slice based methods is shown in a user study. We demonstrate our technique through experiments providing interactive visualization to the fMRI operator and also to the test subject in the scanner through a head mounted display.

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BibTex references

@inproceedings{NEOHLFAKY10,
  author       = {Nguyen, Khoa Tan and Eklund, Anders and Ohlsson, Henrik and Hernell, Frida and Ljung, Patric and Forsell, Camilla and Andersson, Mats T. and Knutsson, Hans and Ynnerman, Anders},
  title        = {{Concurrent Volume Visualization of Real-Time fMRI}},
  booktitle    = {IEEE/EG Volume Graphics},
  pages        = {53--60},
  year         = {2010}
}

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