Method for reducing artifacts in a spatial measurement

Details Method for reducing artifacts in a spatial measurement Method for reducing artifacts in a spatial measurement

2005-04-12

2005-04-12

Hindenburg, Max F. (Department: 3736)

Surgery

Diagnostic testing

Measuring fluid pressure in body

C600S587000, C128S925000

Reexamination Certificate

active

06878119

ABSTRACT:
A method for artifact reduction in sonomicrometer obtained intracranial pressure measurements generally comprises isolating a component of a sonomicrometer waveform attributable solely to changes in intracranial volume by using a neural network or other nonlinear engine to extract a heartbeat component from the sonomicrometer output. Because the heartbeat is so characteristic, no actual measurement of the heartbeat as the forcing function is required to isolate the resulting changes in distance from the artifact induced changes in distance. The neural network then be utilized to directly map measured changes in skull distance over time to changes in intracranial pressure over a volume change, the inverse of compliance. The method is generally extendable to use with other volumetric based measurement techniques.

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