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Skeletal Radiology

, Volume 38, Issue 9, pp 911–917 | Cite as

MR imaging of the human hand and wrist at 7 T

  • Björn BehrEmail author
  • Jörg Stadler
  • Henrik J. Michaely
  • Hans-Georg Damert
  • Wolfgang Schneider
Technical Report

Abstract

Objective

The purpose of this study was to evaluate the feasibility, quality, and possible future implications of magnetic resonance imaging (MRI) of the human hand and wrist at 7 T.

Materials and methods

Images of the left hand of a healthy volunteer were acquired with a 7- and a 1.5-T whole body system and comparatively analyzed. Axial and coronal two-dimensional gradient echo (GRE) images with inflow saturation, coronal 3D GRE images, and time-of-flight angiographies were obtained without averaging. Image details were related to the complex hand anatomy.

Results

With the 7-T protocols established in this study, high-quality and high-resolution images of the hand and wrist were obtained. In the 2D GRE images at 7 T, small anatomical structures of the hand were depicted in vivo with superior detail and resolution, compared to 1.5 T and published studies at lower field strength. Signal-to-noise ratios (SNRs) were approximately five times higher at 7 T compared to 1.5 T. Additionally, thin 3D GRE images with good quality of the whole hand were obtained in a short acquisition time. Moreover, time-of-flight angiographies of the small hand arteries have been acquired without the application of contrast agents.

Conclusion

Seven-tesla imaging of the hand can be used in vivo with ultra-high resolution and sufficient SNR. It allows for exact delineation of most anatomical structures including nerves, muscles, tendons, ligaments, cartilage, and blood vessels.

Keywords

MRI 7 Tesla Magnetic resonance angiography Hand Wrist Finger 

Notes

Acknowledgments

The authors thank Özlem Krischek for 3D processing of the ToF data and Oliver Speck for critically reading the manuscript.

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Copyright information

© ISS 2009

Authors and Affiliations

  • Björn Behr
    • 1
    Email author
  • Jörg Stadler
    • 2
  • Henrik J. Michaely
    • 3
  • Hans-Georg Damert
    • 1
  • Wolfgang Schneider
    • 1
  1. 1.Department of Plastic, Reconstructive and Hand SurgeryUniversity of MagdeburgLeipziger Str. 44MagdeburgGermany
  2. 2.Leibniz Institute for NeurobiologyUniversity of MagdeburgMagdeburgGermany
  3. 3.Institute of Clinical Radiology and Nuclear MedicineUniversity Medical Center MannheimMannheimGermany

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