Adjustable shunt valve-induced magnetic resonance imaging artifact: a comparative study.
作者： Ahmed K. Toma , Andrew Tarnaris , Joan P. Grieve , Laurence D. Watkins , Neil D. Kitchen
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摘要: Object In this paper, the authors' goal was to compare artifact induced by implanted (in vivo) adjustable shunt valves in spin echo, diffusion weighted (DW), and gradient echo MR imaging pulse sequences. Methods The images obtained 8 patients with proGAV 6 Strata II were assessed for areas different planes as well total volume Results Artifacts valve significantly larger than those sequence (29,761 vs 2450 mm3 on T2-weighted fast p = 0.003) DW (100,138 38,955 mm3, 0.025). more marked sequencse both types. Conclusions Adjustable valve–induced artifacts can conceal brain pathology images. This should influence choice of implantation site type used. effect be highl...
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