Comparison of a wide magnet with a conventional magnet at 3 tesla magnetic resonance imaging based on signal intensity uniformity with large field of view: A phantom study

Ho Beom Lee, Ji Sung Jang, Yong Soo Han, Sung Min Kim

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Signal uniformity a criterion for providing objective information for evaluating the performance of a magnetic resonance imaging (MRI) and is an important measurement standard for evaluating the homogeneity of MRI system. In the early, magnet bore was very narrow in diameter. In general, magnetic bore was used with a small size that only allowed a brain imaging. Because, magnet bore size and homogeneity are inversely proportional. Recently, cylindrical-bore MR imagers with wider bores have been developed to provide higher field strengths. We compared the uniformity of large field of view (FOV) and image quality of large phantom imaging between spin echo (SE) and gradient echo (GRE) using 60-cm conventional-bore and 70-cm wide-bore 3.0 tesla (T) MR scanners. In the results, the SE and the GRE images demonstrated almost identical signal intensity patterns. The w ide bore offers similar to uniformity in the large FOV compare w ith conventional bore. Wide-bore MRI using a large FOV can provide comparable image quality and geometric accuracy to conventional-bore MRI.

Original languageEnglish
Pages (from-to)471-476
Number of pages6
JournalJournal of Magnetics
Volume24
Issue number3
DOIs
StatePublished - 2019

Keywords

  • Field homogeneity
  • Magnet bore
  • Magnetic resonance signal uniformity

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