Abstract
A scanning null-line phased array system is introduced and comparisons of the detection sensitivity are made between scanning null-line phased array system, fixed null-line phased array system and single source system. The results show that the scanning null-line system has higher detecting sensitivity (signal-to-noise ratio) than fixed null-line phased array system or single source system, which infer that the scanning null-line phased array system is a promising method to achieve sub-surface small tumor detection in tissue.
© 2002 Optical Society of America
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