The Contribution of Common Surgically Implanted Hardware to Functional MR Imaging Artifacts.

ABSTRACT:

Background and purpose

Blood oxygenation level-dependent MR imaging is increasingly used clinically to noninvasively assess cerebrovascular reactivity and/or language and motor function. However, many patients have metallic implants, which will induce susceptibility artifacts, rendering the functional information uninformative. Here, we calculate and interpret blood oxygenation level-dependent MR imaging artifact impact arising from surgically implanted hardware.

Materials and methods

A retrospective analysis of all blood oxygenation level-dependent MRIs (n = 343; B0 = 3T; TE = 35 ms; gradient echo EPI) acquired clinically (year range = 2006-2014) at our hospital was performed. Blood oxygenation level-dependent MRIs were most commonly prescribed for patients with cerebrovasc

SUBMITTER: Desai AA 

PROVIDER: S-EPMC4644697 | biostudies-literature | 2015 Nov

REPOSITORIES: biostudies-literature