Motion-triggered cine MR imaging of active joint movement.
MRI cine studies of active physiological joint movement can provide additional functional information as a supplement to standard examinations. With the ankle joint as an example, it is shown that it is possible to measure kinematic MRI presentations of active joint movement. A pneumatic pressure transducer, a respiratory monitor, and an active differentiator transformed the skin muscle shifting of periodically performed joint movement to a pseudo-ECG, which finally triggered the MRI scanner as in cardiac cine MR imaging.
Melchert
U H
UH
Christian-Albrechts-University of Kiel, Department of Radiology, Germany.
Schröder
C
C
Brossmann
J
J
Muhle
C
C
D000843:Ankle Joint / Q000033:anatomy & histology / Q000502:physiology*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D009040:Motion Pictures; D009068:Movement