The main risk with MRI is that the presence of metal in the body (such as pacemakers or other implants) can be a safety hazard. Advantages and Limitations of Functional Magnetic Resonance Imaging (fMRI) of the Human Visual Brain May 2015 In book: Horizons in Neuroscience Research series , Volume 17 (pp.65-72) There is no involvement of any kind of radiations in the MRI, so We brieï¬y examine the complementary features of the two techniques, and we then describe ways to acquire the two types of data, the relative advantages and disadvantages of acquiring them simultaneously, and strategies and methods for â¦ Advantages - Unlike a PET scan it doesn't rely on radiation so it's virtually risk-free, non-invasive and straightforward to use. Functional Magnetic Resonance Imaging or fMRI is a diagnostic technique that measures the activity of the brain. Advantages and Disadvantages of fMRI and MRI^ MRI and fMRI both involve no radiation, and there are no known side effects caused by the magnetic fields and radio waves. Functional magnetic resonance imaging . fMRI is used to study the brain structure. Previous studies have shown the advantages of retrospectively correcting for physiological noise in fMRI when those are recorded during the scanning (Glover et al., 2000, Birn et al., 2006, Birn et al., 2008, Chang and Glover, 2009, Verstynen and Deshpande, 2011). This makes it hard to do with children, as they arenât so good at staying still. Disadvantages: FMRI is very sensitive to movement; you have to stay very still in the scanner! As opposed to paradigm- or task-based functional MR imaging, resting-state fMRI does not â¦ Are there any benefits of using fNIR over fMRI or is it just less costly? It is relatively low cost and portable. Advantages: FMRI can assess changes during certain tasks, because it has pretty good temporal resolution â the brains response is close in time. Disadvantages - It is expensive and can only capture a clear image if the perso stays perfectly still. Disadvantages: Cannot determine cortical activity exceeding 4 centimeters due to limited power of light â¦ fMRI (functional magnetic resonance imaging) Advantages- radioactive substances are not digested, activity of the brain is precisely recorded Disadvantages- can not provide precise information about when a part of the brain becomes active, expensive, noisy and movement is limited fNIRS (Functional Near-Infrared Spectroscopy) and fMRI (functional Magnetic Resonance Imaging) are both types of âfunctional neuroimaging  â. â¦ Advantages: Capable of monitoring changes in oxygenation via the usage of specific wavelengths of light. May be as effective as an fMRI for assessing cognitive tasks. current knowledge and research on the use of combined fMRI and EEG data. SUMMARY: Resting-state fMRI was first described by Biswal et al in 1995 and has since then been widely used in both healthy subjects and patients with various neurologic, neurosurgical, and psychiatric disorders.