| abstract |
The invention relates to a device to produce mechanical oscillations in a research object using magnetic resonance elastography (MRE) with a membrane that can be set into periodic motion ( 312 ) and a transmission element ( 4, 400 ) for the transmission of periodic motion of the membrane ( 312 ) onto the research object ( 1 ), whereby the membrane ( 312 ) is connected to the transmission element ( 4, 400 ) by means of a mounting medium ( 311, 320, 321, 322 ) in such a way that periodic motion of the membrane is transmitted over the mounting medium ( 311, 320, 321, 322 ) to the transmission element ( 4, 400 ). A second aspect relates to the invention of a device with a step motor to generate periodic motion and a transmission element for the transmission of the periodic motion of the step motor to the research object in order to generate mechanical oscillation therein. The invention also relates to a procedure for the magnetic resonant elastographic determination of biomechanical characteristics of tissue with steps: c) excitation of mechanical oscillations using a frequency of f v in which n is the tissue to be researched; d) proof of mechanical oscillation within the tissue using magnetic resonance, whereby a periodic magnetic field with a repeat time of TR≦1/f v is used on the tissue. |