We are performing proton MRI imaging of the brain tissue. Initially, the sample is in equilibrium. Then the magnetic field (Bo = 7T) is turned on and we get a new equilibrium. A 1-mm cubic voxel has a magnetization of Mo, and the measured MRI signal is lo. Find the correct equation to determine the measured signal intensity from a 2-mm cubic voxel. Use lo as a constant in the equation.

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