Efficacy of Contrast Medium Use at 3.0 T: A Study Employing Different T1-weighted Pulse Sequences
F Fischbach, KT Hoffmann, M Pech, F Neumann, J Ricke, H Bruhn · RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren · 2004 · Heft 03
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Zusammenfassung
Purpose: In conventional SE imaging at 3.0-T contrast suffers due to the increase of T1 relaxation times. Hence, an inversion recovery pulse is favored in combination with FSE sequences to improve the gray to white matter contrast. As the temporal signal evolution in T1 sequences differs, warranting a direct comparison of various T1-weighted imaging sequences to assess the T1-shortening effect of Gd-DTPA (dimeglumine) and its enhancing effect on pathologies with blood-brain-barrier disruption. Method and materials: MR imaging included (1) a conventional spinecho sequence (SE: TR/TE=600/ 15ms), (2) an inversion r…