Rapid three-dimensional MR imaging using the FLASH technique

J Comput Assist Tomogr. Mar-Apr 1986;10(2):363-8. doi: 10.1097/00004728-198603000-00046.

Abstract

Fast low-angle shot (FLASH) imaging is a new technique for rapid magnetic resonance (MR) imaging that reduces acquisition times to seconds while retaining spatial resolution. This article deals with a three-dimensional (3D) variant of the FLASH method that allows the recording of a 3D-data set of 128 X 128 X 128 pixels within an acquisition time of only 4 min. The method is demonstrated using a 2.35 T 40 cm bore MR system. Experiments are carried out on rabbit head and human extremities. Depending on the field of view, the isotropic resolution is 1 mm or even less leading to cross-sectional images with a 1 mm slice thickness. In principle, FLASH imaging techniques are applicable to any MR system without the need of major hardware modifications. However, high-speed computers, large storage capacity, and rapid image display routines greatly facilitate an advantageous use of the 3D-FLASH variant.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Foot / anatomy & histology
  • Hand / anatomy & histology
  • Head / anatomy & histology
  • Humans
  • Image Enhancement / methods*
  • Magnetic Resonance Spectroscopy* / methods
  • Rabbits
  • Time Factors