MR Angiography Methods
2004
It is extremely difficult to forecast the signal intensity of blood in the MR image, because the blood signal depends on a large number of factors. On the one hand, these include technical factors such as:
Sequence type (SE, GRE, etc.),
Sequence parameters (TR, TE, flip angle), and on the other hand geometrical and physiological factors such as:
Flow direction with respect to the image plane (perpendicular to or within the image plane),
Flow velocity (arterial, venous, systolic, diastolic),
Pulsation,
Flow profile (laminar, turbulent).
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