Signal processing in scanning thermoacoustic tomography in biological tissues.
Signal processing in scanning thermoacoustic tomography in biological tissues.
复制标题
生物组织中扫描热声断层扫描的信号处理。
DOI:
10.1118/1.1380436
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发表时间:
2001
期刊:
影响因子:
3.8
通讯作者:
Wang,LV
中科院分区:
文献类型:
--
作者:
Xu,Y;Wang,LV
Microwave‐induced thermoacoustic tomography was explored to image biological tissues. Short microwave pulses irradiated tissues to generate acoustic waves by thermoelastic expansion. The microwave‐induced thermoacoustic waves were detected with a focused ultrasonic transducer to obtain two‐dimensional tomographic images of biological tissues. The dependence of the axial and the lateral resolutions on the spectra of the signals was studied. A reshaping filter was applied to the temporal piezoelectric signals from the transducer to increase the weight of the high‐frequency components, which improved the lateral resolution, and to broaden the spectrum of the signal, which enhanced the axial resolution. A numerical simulation validated our signal‐processing approach.
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影响因子:
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通讯作者:
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