Abstract
High-resolution spin-echo and two-and three-dimensional gradient-recalled acquisition in the steady state (GRASS) and spoiled GRASS images of the wrist and eye were obtained with a whole-body magnetic resonance imager by using trapezoidal phase-encoding gradient waveforms and by lowering receiver bandwidth to ± 8 kHz, which results in a minimum field of view (FOV) of 4 cm and pixel resolution of 156 μm for a 256 × 256 matrix. Short echo times were achieved by using partial-echo acquisition. Poor signal-to-noise ratio resulting from smaller voxel sizes was overcome by using prototype receive-only eye and wrist coils. Images were obtained in reduced time and were superior to those obtained in studies performed with an 8-12-cm FOV and commercially available coils.
Original language | English (US) |
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Pages (from-to) | 277-281 |
Number of pages | 5 |
Journal | Radiology |
Volume | 183 |
Issue number | 1 |
State | Published - Apr 1992 |
Externally published | Yes |
Keywords
- Eye, MR, 224.1214
- Magnetic resonance (MR), high-resolution
- Magnetic resonance (MR), technology
- Magnetic resonance (MR), three-dimensional
- Wrist, MR, 43.1214
ASJC Scopus subject areas
- Radiological and Ultrasound Technology