Figure 2:

Physics of time-of-flight magnetic resonance venography. Using short interval radiofrequency pulses, stationary spins are saturated while mobile spins entering the imaging slice, being unsaturated, impart a bright signal.

Physics of time-of-flight magnetic resonance venography. Using short interval radiofrequency pulses, stationary spins are saturated while mobile spins entering the imaging slice, being unsaturated, impart a bright signal.