1. A method for automatically determining a flow of a bodily fluid within vessels of an organism by magnetic resonance, comprising the steps of: implementing a magnetic resonance angiography procedure to obtain a magnetic resonance angiography image of a subject; implementing a magnetic resonance flow measurement to generate magnetic resonance flow image of the subject; and applying the magnetic resonance angiography image to the magnetic resonance flow image as a mask to produce a resulting image that depicts vessels in the subject with flow of the bodily fluid in the vessels.