Upright digital stereotaxis

Stereotaxis and nuclear magnetic resonance.

The application of nuclear magnetic resonance (NMR) imaging to a stereotactic method is described. The physical properties of NMR offer some important advantages such as good contrast between grey and white matter and the possibility to scan the brain in three planes and at any desired angle. Stereotactic localisation by NMR gives very satisfactory and precise visualisation of the target struct...

Stereotaxis in the treatment of parkinsonism.

UNTIL a few years ago the only worth-while operation for Parkinsonism was complete division of the lateral column of the spinal cord at the level of the second cervical segment (Oliver, I950), but arrest of tremor was obtained at the cost of weakness of the arm and leg and some sensory loss on the opposite side and, furthermore, this operation was applicable to unilateral Parkinsonism only (Oli...

Upright MRI

Optimal realization of arbitrary forces in a magnetic stereotaxis system

Very small implanted permanent magnets guided by large electromagnetic coils have been proposed previously as a method for delivering hyperthermia to or guiding catheters through brain tissue. This procedure is termed “magnetic stereotaxis.” Early efforts employed a single coil on a movable boom, a design that proved logistically difficult to use on human patients. The present work deals instea...

CT-guided stereotaxis using a modified conventional stereotaxic frame.

Computed tomographic (CT)-guided stereotaxic procedure have become established in a few major centers but a single optimal system has not yet emerged. At Duke University Medical Center, availability of a stereotaxic frame with design features that lend themselves to CT adaptation made modification of this unit, rather than construction of a new dedicated frame, cost-effective. As other centers ...