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Echoencephalographic examinations of the brain, first reported by Leksell [1] in 1956, were initially limited to A-mode determinations of midline shifts. In 1963, de Vlieger et al. [2] introduced bistable, two-dimensional imag ing 8-mode. With the advent of modern gray-scale techniques, the quality of sonographic scans improved markedly, and 8-scan imaging(More)
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