[High-resolution MRT with increased magnetic field gradients and a 512(2)-data matrix: initial clinical experiences].
By increasing the strength of the magnetic field gradients of a whole-body imager to 9.4mT/m, it was possible to obtain spin-echo images with short echo delays and high spatial resolution. The reduction of the pixel size was effected either by decreasing the field of view or by increasing the scan matrix (512(2) pixel). To prevent loss of signal-to-noise ratio, the scan parameters had to be carefully selected. With the 512(2) matrix, the resolution could be increased without decreasing the field of view, so that backfolding artifacts were avoided. In comparison with the 256(2) matrix, the 256 x 512 matrix provided improved resolution in the frequency encoded direction without an increase in acquisition time.
Spielmann
R P
RP
Abteilung für Röntgendiagnostik, Universitätskrankenhaus Eppendorf, Hamburg.
Kooijman
H
H
Jend
H H
HH
Hansen
S
S
Crone-Münzebrock
W
W
Heller
M
M
Bücheler
E
E
D006801:Humans; D008279:Magnetic Resonance Imaging / Q000295:instrumentation* / Q000379:methods
Hochauflösende MRT mit verstärkten Magnetfeld-gradienten und 512(2)-Datenmatrix: Erste klinische Erfahrungen.