Spatial distortion due to field inhomogeneity in 3.0 tesla intraoperative MRI

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We describe a 14-year-old boy with a pilocytic astrocytoma of the left caudate head. Preoperative localization MR imaging (MRI) was performed in the operating room, and spatial distortion was noted felt to be related to head positioning relative to the isocenter of the magnetic field. The distortion artifact was subtle enough to be difficult to detect, but large enough to change the location of the lesion potentially leading to a non-diagnostic stereotactic biopsy. Repeat imaging after changing the head position to allow scanning closer to the isocenter of the magnetic field showed decreased distortion, an improvement greater than that using the manufacturer's distortion correction algorithm on the initial images. Intraoperative MRI, and its requisite limitations in positioning, requires vigilance to detect possible distortion that could alter surgical outcomes if not identified and corrected prospectively.

Original languageEnglish (US)
Pages (from-to)387-392
Number of pages6
JournalNeuroradiology Journal
Volume27
Issue number4
DOIs
StatePublished - Aug 1 2014

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Head
Magnetic Fields
Astrocytoma
Operating Rooms
Artifacts
Biopsy

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging
  • Clinical Neurology

Cite this

Spatial distortion due to field inhomogeneity in 3.0 tesla intraoperative MRI. / Choudhri, Asim; Chin, Eric M.; Klimo, Paul; Boop, Frederick.

In: Neuroradiology Journal, Vol. 27, No. 4, 01.08.2014, p. 387-392.

Research output: Contribution to journalArticle

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