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Neither emulsion manifested significant ultrasonic backscatter until avidin was added.
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So backscatter systems are very good at imaging organic material -much better than dual-energysystems.
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Conclusion: OCT can effectively differentiate normal cortex from intracortical melanoma based on variations in optical backscatter.
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Things dense enough to hopefully block the infrared and backscatter and heartbeat sensors Star Helix carried.
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Changes in optical backscatter intensity were used to identify regions of tumor and to locate tumor margins.
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Avidin-induced aggregation produced a marked enhancement in backscatter from the biotinylated but not from the control emulsion.
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Similarly, backscatter x-ray scanners send out low-intensity beams, and watch how the x-ray photons get reflected back.
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Ultrasonic contrast agents are used to enhance backscatter from blood and thus aid in delineating blood from surrounding tissue.
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Results: Two-dimensional images showed increased optical backscatter from regions of tumor, which was quantitatively used to determine the tumor margin.
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Arterial samples imaged under pressure and in a collapsed state underwent dimensional changes but exhibited similar levels of backscatter amplitude.
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AXB was also found to have better dose predictions than AAA and CCC at the tissue interfaces where backscatter occurs.
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The current knowledge is placed in the context of integrated backscatter and the future of echocardiographic based tissue characterisation is discussed.
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Acquisition rates were fast enough to capture dynamic changes in optical backscatter which corresponded to thermal tissue damage during laser ablation.
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Already, there's a push to install scanners that show travelers' naked bodies through clothing, using either millimeter wave or backscatter X-ray imaging.
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The results suggest that quantitative integrated backscatter is a sensitive parameter for detecting both early and old myocardial infarction by cardiac tissue characterization.
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Bland-Altman analysis revealed best agreement for the birefringence measurements, followed by backscatter intensity, and depolarization, when limiting the analysis to areas of meaningful birefringence.