Air bubble artifact reduction in post-mortem whole-brain MRI: the influence of receiver bandwidth

Neuroradiology. 2018 Oct;60(10):1089-1092. doi: 10.1007/s00234-018-2071-8. Epub 2018 Aug 8.

Abstract

Air bubble artifacts on SWI post-mortem MRI studies may interfere with the detection of cerebral microbleeds. We investigated whether the utilization of a higher receiver bandwidth of 500 Hz/pixel could reduce cortical air bubble artifacts without compromising the detection of cerebral microbleeds in high-field MRI. All microbleeds remained clearly visible whereas a reduction of 17% of the long axis of the "halo" magnitude artifacts was achieved. On corresponding phase images, air bubble artifacts appeared identical.

Keywords: Air bubble artifacts; MRI; Microbleeds; Postmortem; SWI.

MeSH terms

  • Aged
  • Aged, 80 and over
  • Air*
  • Artifacts*
  • Autopsy
  • Brain Diseases / diagnostic imaging*
  • Brain Diseases / pathology
  • Female
  • Humans
  • Image Enhancement / methods*
  • Magnetic Resonance Imaging / methods*
  • Male
  • Neuroimaging / methods*
  • Postmortem Changes