Development of a compact MRI system for trabecular bone microstructure measurements of the distal radius.
A compact MRI system for trabecular bone (TB) microstructure measurements of the distal radius was developed using a 1.0 T permanent magnet and a compact MRI console. TB microstructure of the distal radius was clearly visualized using a three-dimensional (3D) driven equilibrium spin-echo (DESE) sequence in 23 min. The image obtained had a sufficient spatial resolution (150 microm x 150 microm x 500 microm) and signal-to-noise ratio (SNR) (approximately 10) for 3D bone microstructure analysis. The system demonstrated the feasibility of using a permanent magnet compact MRI system as a clinical instrument for bone microstructure measurements of the distal radius.
Handa
Shinya
S
Institute of Applied Physics, University of Tsukuba, Tsukuba, Japan. handa@mrlab.frsc.tsukuba.ac.jp
Tomiha
Sadanori
S
Haishi
Tomoyuki
T
Kose
Katsumi
K
D000328:Adult; D004867:Equipment Design; D005240:Feasibility Studies; D006801:Humans; D021621:Imaging, Three-Dimensional; D008279:Magnetic Resonance Imaging / Q000295:instrumentation*; D008297:Male; D019047:Phantoms, Imaging; D011884:Radius / Q000648:ultrastructure*; D015203:Reproducibility of Results