| Popis: |
The purpose of this study were two folds: (1) to analyze the influence of matrix, parallel imaging and acquisition time on image quality of 3D TOF MRA at 1.5T and 3T, and to illustrate whether the combination of larger matrices with parallel imaging technique is feasible, by evaluating the visualization of simulated intracranial aneurysms and aneurysmal blebs using a vascular phantom with pulsatile flow; and (2) to analyze the influence of the matrix and the echo time (TE) of 3D TOF MRA on the depiction of residual flow in aneurysms embolized with platinum coils at 1.5T and 3T and to establish the optimal parameters using a vascular phantom with a pulsatile flow. |
