MR imaging of hand and wrist with a dedicated 0.1-T low-field imaging system

Magn Reson Imaging. 1991;9(6):949-53. doi: 10.1016/0730-725x(91)90541-s.

Abstract

We describe the first results of a new magnetic resonance imaging (MRI) system specially developed for hand and wrist imaging. The system uses a small resistive water-cooled magnet with a vertical magnetic field of 0.1 T in an air gap of 15 cm. The console is based on a microcomputer with a vector signal processor and an image-processing board. There is actually no Faraday cage. For the whole hand, the in-plane spatial resolution is less than 1 mm in the 128 x 128-pixels format for typical slice thicknesses of 3 to 5 mm. Solenoidal volume coils for fingers were developed, giving, in the same matrix format, an in-plane high spatial resolution of 0.22 mm for a typical slice thickness of 3 mm.

MeSH terms

  • Hand / anatomy & histology*
  • Humans
  • Image Processing, Computer-Assisted*
  • Magnetic Resonance Imaging / instrumentation*
  • Microcomputers
  • Wrist / anatomy & histology*