[MRI of the knee joint: first results of a comparison of 0,2-T specialized system and 1,5-T high field strength magnet].
OBJECTIVE
Diagnostic accuracy and image quality of a specialised system for MR examinations of peripheral joints were evaluated.


METHODS
20 patients with acute or chronic injuries of the knee were examined using a low-field MR system (0.2 T). For comparison, all patients were also studied with a 1.5 T high field strength magnet and all diagnoses were correlated with arthroscopic findings.


RESULTS
We found compatible diagnostic accuracies (cruciate ligaments 90%, menisci 75-90%) and good image quality ratings for the low field system ("good" and "excellent" image quality in 83% of cases).


CONCLUSIONS
The low-field MR-system offers low-cost MR examinations of peripheral joints with good image quality and reliable diagnostic information.
Kersting-Sommerhoff
B
B
Institut für Röntgendiagnostik, Technischen Universität München.
Gerhardt
P
P
Golder
W
W
Hof
N
N
Riel
K A
KA
Helmberger
H
H
Lenz
M
M
Lehner
K
K
D000328:Adult; D000368:Aged; D003288:Contusions / Q000175:diagnosis; D005069:Evaluation Studies as Topic; D006801:Humans; D004204:Joint Dislocations / Q000175:diagnosis; D007718:Knee Injuries / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008875:Middle Aged; D012680:Sensitivity and Specificity
MRT des Kniegelenks: Erste Ergebnisse eines Vergleichs von 0,2-T-Spezialsystem mit 1,5-T-Hochfeldmagnet.