Chapter 1 Quiz Please purchase the course before taking this quiz. The S/N ratio is less important in CE MRA as C/N Ratio True False The voxel in an MRA exam should be isometric True False Multiple angulated thin MIPs are similar to curved MPR’s True False The bloodvessel should be exactly perpendicular to the slice in a 3D TOF/Inflow MRA method True False Using the MinMIP’s in postprocessing most black pixels are being viewed at and calculated True False Which answer is true? Signal-loss can be caused by turbulence in a voxel Signal dephasing is decreasing and is later increasing the signal in the voxel Signal-loss can be caused by fast velocities a 3D bSSFP based NCE RF sequence should be runned with cardiac triggering/gating True False The shaded surface display postprocessing technique can only show the exterior side of the vessel True False zero-padding is done during the reconstruction of the acqusition True False which answer is true? Spatial mis-registration can happen by fast flow Spatial mis-registration is an artefact shown in the phase encoding direction Spatial mis-registration is an artefact shown in the slice selection direction which answer is true? In postprocessing there are techniques used where there can be made difference between arteries and veins In postprocessing there are techniques used where there can be made difference between arteries, the capillary system and veins which answer is true? Blood can be quantified with help of postproceesing Blood can only be qualified with help of postprocessing
