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This report deals with the scanning acoustic microscope for imaging cross sectional characteristic acoustic impedance of biological soft tissues. A focused pulse wave is transmitted to the object placed on the ??rear surface?? of a plastic substrate. The reflected signals from the target and reference are interpreted into local acoustic impedance. Two-dimensional profile is obtained by scanning the...
Two-dimensional acoustic impedance imaging is useful for observation of living organs without invasion. In order to visualize the distribution of specific functional proteins in the cerebellar cortex, we proposed direct or complex-including heavy metal treatment to elevate the acoustic impedance of a particular cerebellar layer. Heavy metal binding was useful for acoustic impedance imaging; however,...
This report deals with the scanning acoustic microscope for imaging cross sectional acoustic impedance of biological soft tissues. A focused acoustic beam with a wide frequency range up to about 100 MHz was transmitted to the tissue object in contact with the "rear surface" of plastic substrate. The reflected signals from the target and reference are interpreted into local acoustic impedance...
Acoustic microscopy is expected to be a powerful tool for observing biological matters without chemical staining. We have proposed a new method for two-dimensional acoustic impedance imaging for biological tissue that can perform micro-scale observation without preparing a sliced specimen. A tissue was attached on a 0.5 mm-thick plastic substrate. An acoustic pulse was transmitted from the rear side...
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