| Photoacoustic Tomography of Biological Sample Using Phase-controlled Focus Algorithm |
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| 作者姓名： | 蔡万绍 邢达 唐志列 钱盛友 |
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| 作者单位： | Laser Life Science Institute，South China Normal University，Guangzhou 510631，China |
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| 基金项目： | theNationalScienceFundforDistinguishedYoungScholarsofChina (No .6 972 5 0 0 9)，theTeamProjectofNaturalScienceFoundationofGuangdongProvince (No .0 15 0 12 ) |
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| 摘 要： | 1 Ｉｎｔｒｏｄｕｃｔｉｏｎ Ｏｐｔｉｃａｌｔｏｍｏｇｒａｐｈｙｏｆｓｃａｔｔｅｒｉｎｇｍｅｄｉａｓｕｃｈａｓｂｉｏｌｏｇｉｃａｌｔｉｓｓｕｅｓｉｓａｎｉｎｃｒｅａｓｉｎｇｌｙａｃｔｉｖｅｆｉｅｌｄｂｅｃａｕｓｅｏｆｉｔｓａｄｖａｎｔａｇｅｓｉｎｎｏｎｉｎｖａｓｉｏｎ ,ｎｏｎｉｏｎｉｚａｔｉｏｎａｎｄｏｐｔｉｃａｌｃｏｎｔｒａｓｔｗｈｅｎｉｔｉｓｕｓｅｄｆｏｒｂｉｏｍｅｄｉｃａｌｄｉａｇｎｏｓｉｓ1] .Ｔｈｅｍｅｃｈａｎｉｓｍｏｆｏｐｔｉｃａｌｉｍａｇｉｎｇｉｓｂａｓｅｄｏｎｔｈｅｄｉｆｆｅｒｅ…
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| 收稿时间： | 2001/5/25 |
Photoacoustic Tomography of Biological Sample Using Phase-controlled Focus Algorithm |
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| CAI Wanshao,XING Da,TANG ZhilieQIAN Shengyou.Photoacoustic Tomography of Biological Sample Using Phase-controlled Focus Algorithm[J].中国激光(英文版),2002,11(4):311-314. |
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| Authors: | CAI Wanshao XING Da TANG ZhilieQIAN Shengyou |
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| Abstract: | Photoacoustic (PA) imaging is a new imaging modality, which converts pressure signals received by a scanning detector to a local distribution of electromagnetic absorption density. In this paper an experiment result of a photoacoustic tomography to depths of ～7 mm for a real tissue is presented, using a 532-nm pulse YAG laser. The time-resolved stress detection technique was used for PA signal detection with a high temporal resolution. A phase-controlled focus algorithm was used for image reconstruction. Images of different depth profiles in tissue were obtained. The depth resolution was 30 μm and could be up to 10 μm using a wide-band tranducer. |
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| Keywords: | photoacoustic tomography tissue laser |
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