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Dokumenttyp:
journal article 
Autor(en):
Friedrich, B; Wostrack, M; Ringel, F; Ryang, Y-M; Förschler, A; Waldt, S; Zimmer, C; Nittka, M; Preibisch, C 
Titel:
Novel Metal Artifact Reduction Techniques with Use of Slice-Encoding Metal Artifact Correction and View-Angle Tilting MR Imaging for Improved Visualization of Brain Tissue near Intracranial Aneurysm Clips. 
Abstract:
The MR image quality after intracranial aneurysm clipping is often impaired because of artifacts induced by metal implants. The purpose of the present study was to evaluate the benefit of a new WARP sequence with slice-encoding metal artifact correction (SEMAC) and view-angle tilting (VAT) MR imaging as novel artifact reduction techniques.A new WARP TSE (a work-in-progress software package provided by Siemens Healthcare) sequence was implemented for cranial applications based on a turbo spin echo (TSE) sequence. T1- and T2-weighted images with standard and WARP TSE sequences were acquired from 6 patients with 11 clipping sites, and the images were compared based on artifact size and general image quality.T2- and T1-weighted WARP TSE sequences resulted in a highly significant reduction of metal artifacts compared with standard sequences (T2w- WARP TSE: 89.8 ± 1.4 %; T1w- WARP TSE: 84.9 ± 2.9 %; p< 0.001) without a substantial loss of image quality.The use of a new WARP TSE sequence after aneurysm clipping is highly beneficial for increasing the diagnostic MR image quality due to a striking reduction of metal artifacts. 
Zeitschriftentitel:
Clin Neuroradiol 
Jahr:
2016 
Band / Volume:
26 
Heft / Issue:
Seitenangaben Beitrag:
31-7 
Sprache:
eng 
Print-ISSN:
1869-1439 
TUM Einrichtung:
Abteilung für Neuroradiologie; Neurochirurgische Klinik und Poliklinik; Institut für Radiologie