[Principles of magnetic resonance angiography].
Magnetic resonance angiography is a modality of functional imaging which can only be interpreted on the basis of a good understanding of vascular physiology and the physical principles of image acquisition. Magnetic resonance angiography is based on flow-related "artefacts". The oldest method is based on renewal of the image by proton flow: the flight time effect. Dephasing of the protons travelling in magnetic field gradients results in phase-contrast angiography. These two methods of angiography each have respective advantages and disadvantages: they are not mutually exclusive, but complementary.
Pharaboz
C
C
Service de Radiologie, Hôpital Bégin, Saint-Mande.
Falise
B
B
Boyer
B
B
Dubayle
P
P
D006439:Hemodynamics / Q000502:physiology*; D006801:Humans; D018810:Magnetic Resonance Angiography / Q000379:methods* / Q000639:trends
Principes de l'angiographie par résonance magnétique.