The present invention is directed toward an acoustic, piezoelectric, electric, electro-mechanical or pneumatically driven surface drum driver, in mechanical engagement with a
biopsy or
acupuncture needle device and a method for its use for diagnosis of small e.g. 100 microns, tumors via the production of magnetic
resonance elastographic images (MRE), without artifact production, in a
magnetic resonance imaging (MRI)
machine. In a second embodiment, the invention is directed toward an acoustically, pneumatically, piezoelectrically, electrically and / or electro-mechanically driven
acupuncture needle, useful for simulating manual single-
needle acupuncture treatments via a non-manually manipulated
acupuncture needle; and further to a device and process for determination, using twin pneumatically driven surface drivers, of organ stiffness, e.g. brain stiffness, which can be quantified so as to be useful in elucidating and quantifying brain cognitive state, e.g. normal, mild
cognitive impairment (MCI) or Alzheimer's
dementia (AD).