PDF herunterladen
Open Access
CC BY-NC-ND 4.0 · Asian J Neurosurg 2023; 18(03): 492-498
DOI: 10.1055/s-0043-1760857
Original Article

A Novel Portable, Mobile MRI: Comparison with an Established Low-Field Intraoperative MRI System

Autoren

  • Sharon Bossert   *

    1   Department of Neurosurgery, Zucker School of Medicine at Hofstra/Northwell Health, New York, United States

  • Prashin Unadkat    *

    1   Department of Neurosurgery, Zucker School of Medicine at Hofstra/Northwell Health, New York, United States
    2   Elmezzi Graduate School of Molecular Medicine, Northwell Health, Manhasset, United States

  • Kevin N. Sheth

    3   Department of Neurology, Yale School of Medicine, New Haven, Connecticut, United States

  • Gordon Sze

    4   Department of Radiology, Yale School of Medicine, New Haven, Connecticut, United States

  • Michael Schulder

    1   Department of Neurosurgery, Zucker School of Medicine at Hofstra/Northwell Health, New York, United States

Funding IRB costs and the Hyperfine 0.064 T System were supported by Hyperfine, Inc.
Weitere Informationen
Auch verfügbar auf
  Lizenzen und Reprints

Abstract

Background MRI (magnetic resonance imaging) using low-magnet field strength has unique advantages for intraoperative use. We compared a novel, compact, portable MR imaging system to an established intraoperative 0.15 T system to assess potential utility in intracranial neurosurgery.

Methods Brain images were acquired with a 0.15 T intraoperative MRI (iMRI) system and a 0.064 T portable MR system. Five healthy volunteers were scanned. Individual sequences were rated on a 5-point (1 to 5) scale for six categories: contrast, resolution, coverage, noise, artifacts, and geometry.

Results Overall, the 0.064 T images (M = 3.4, SD = 0.1) had statistically higher ratings than the 0.15 T images (M = 2.4, SD = 0.2) (p < 0.01). All comparable sequences (T1, T2, T2 FLAIR and SSFP) were rated significantly higher on the 0.064 T and were rated 1.2 points (SD = 0.3) higher than 0.15 T scanner, with the T2 fluid-attenuated inversion recovery (FLAIR) sequences showing the largest increment on the 0.064 T with an average rating difference of 1.5 points (SD = 0.2). Scanning time for the 0.064 T system obtained images more quickly and encompassed a larger field of view than the 0.15 T system.

Conclusions A novel, portable 0.064 T self-shielding MRI system under ideal conditions provided images of comparable quality or better and faster acquisition times than those provided by the already well-established 0.15 T iMR system. These results suggest that the 0.064 T MRI has the potential to be adapted for intraoperative use for intracranial neurosurgery.

Keywords

intraoperative MRI - portable MRI - hyperfine - low field - point of care imaging

* These authors contributed equally to the manuscript and retain the first authorship.




Publikationsverlauf

Artikel online veröffentlicht:
22. September 2023

© 2023. Asian Congress of Neurological Surgeons. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

Thieme Medical and Scientific Publishers Pvt. Ltd.
A-12, 2nd Floor, Sector 2, Noida-201301 UP, India