Time-of-Flight and Phase Contrast Magnetic Resonance Angiography of the Intracerebral Arteries at Ultrahigh Field
JT Heverhagen, P Schmalbrock, S Sammet, MV Knopp · RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren · 2008 · Heft 02
Bibliografische Angaben
Zusammenfassung
Purpose: The purpose of this study was to evaluate the feasibility of TOF and PC MR Angiography of the cerebral arteries in a whole body 7T MR scanner and to compare the results with clinical MR systems at 1.5T and 3T. Material and Methods: PC and TOF MRAs were acquired in a 7T MR scanner (Achieva, Philips) and in clinical 3T (Achieva, Philips) and 1.5T (Signa, GE) scanners using birdcage head coils. 3D PC (TR:8–15ms; TE:3–4ms; FA:12–20°; FoV: 240mm; Matrix:512×384; averages:1) and 3D TOF (TR:15–25ms; TE:3–4ms; FA:18–20°; FoV:240mm; Matrix:512×384; averages:1) sequences with a slice thickness of 0.75mm were acqu…