Abstract
The application of new scanning (omnidirectional), echogram composition (band assembly), and display (relief presentation) methods to the ultrasonic visualization of intracranial anatomy is described. These methodologic advances are implemented by a general purpose on-line digital computer that makes possible a flexible approach to the development of a more sophisticated generation of such instrumentation facilities. At this stage of the evolution of instruments for viewing the brain, it is desirable to separate certain problems specifically associated with transskull operation from those concerned with determining what anatomic features can be detected and localized when examining pulses are employed in the absence of enhancement of impedance differences at interfaces and under the condition that the acoustic energy not traverse bone. Results for rhesus monkey brain in vivo under such experimental conditions are illustrated.
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