Clinical Neuroradiology

, Volume 26, Issue 1, pp 31–37 | Cite as

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

  • B. FriedrichEmail author
  • M. Wostrack
  • F. Ringel
  • Y. -M. Ryang
  • A. Förschler
  • S. Waldt
  • C. Zimmer
  • M. Nittka
  • C. Preibisch
Original Article



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.

Materials and Methods

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.


SEMAC Clip Artifact MRI WARP 



We thank Siemens Healthcare for providing a work-in-progress software package (WARP WIP for Orthopedic Implant Imaging).

Conflict of Interest



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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • B. Friedrich
    • 2
    • 1
    Email author
  • M. Wostrack
    • 3
  • F. Ringel
    • 3
  • Y. -M. Ryang
    • 3
  • A. Förschler
    • 1
  • S. Waldt
    • 4
  • C. Zimmer
    • 1
  • M. Nittka
    • 5
  • C. Preibisch
    • 1
  1. 1.Department of NeuroradiologyKlinikum rechts der IsarMunichGermany
  2. 2.Department of diagnostic and interventional RadiologyUniversity Hospital LeipzigLeipzigGermany
  3. 3.Department of NeurosurgeryKlinikum rechts der IsarMunichGermany
  4. 4.Department of RadiologyKlinikum rechts der IsarMunichGermany
  5. 5.Siemens HealthcareErlangenGermany

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