How is the M1 Imaging protocol different than most MRI centers for Traumatic Brain Injuries?

M1 Imaging uses a specialized protocol called Susceptibility Weighted Image (SWI). The SWI image is possible through the use of algorithms that differentiate the densities of adjacent tissues. While the signal density forms the basis of all MR scans, the SWI scan is 3-to-6 times more sensitive as it accounts for the susceptibility of all brain elements, including hemorrhages – hence the name susceptibility-weighted image. This differs from the more common DTI protocol. DTI works by measuring the diffusion of water through tissue. With DTI, measurements are isolated to identify the preferred direction of flow, which allows for the isolation of neural tracts from the brain’s white matter. The SWI image shows iron concentrations in the brain and can detect a brain hemorrhage even when the general brain scan appears negative.

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