dramatic advances in computer technologies, especially the development of mathematical algorithms powerful enough to allow difficult equations to be solved quickly, allowed MRI to develop into an important diagnostic clinical tool
Unpaired nuclei in an atom have a resultant spin. We apply a strong magnetic field, so that they align themselves (in their own ways!). Then we blast them with a radio frequency pulse to make them...
MRI uses strong magnetic field and electromagnetic waves to create an image, while the x-ray imaging (regular x-ray like chest x-ray, or CT scan xray) reconstruct the image by finding how much x-ray...
Not knowing the specific kind of scan(s) that you need, it would be difficult to give you an exact answer to your question, to give you a general idea you can expect your MRI to take between 20-45...
fMRI measures the amount of oxygenated blood over time. Deoxygenated and oxygenated blood have different magnetic properties which an fMRI scanner can detect.