TY - JOUR T1 - MR Angiographic Evaluation of Platinum Coil Packs at 1.5T and 3T: An <em>In Vitro</em> Assessment of Artifact Production: Technical Note JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. SP - 848 LP - 853 VL - 26 IS - 4 AU - Matthew T. Walker AU - Jerome Tsai AU - Todd Parish AU - Brian Tzung AU - Ali Shaibani AU - Elizabeth Krupinski AU - Eric J. Russell Y1 - 2005/04/01 UR - http://www.ajnr.org/content/26/4/848.abstract N2 - Summary: Susceptibility artifact from platinum coil packs impairs the visibility of perianeurysmal soft tissues at conventional 3D time-of-flight MR angiography. These artifacts limit the evaluation for residual-recurrent aneurysm and parent vessel stenosis. Reducing the echo time can decrease the artifact and improve perianeurysmal visualization. The purpose of this study was to assess quantitatively the effect of decreasing the echo time on artifact production at different field strengths and coil pack densities. ER -