The present invention discloses a tissue tomography system and a photo-acousto-optic tomography method thereof. The system comprises a first light source, a second light source, an optical detector, and a processing device. A first light wave with a predetermined wavelength of first light source is arranged for irradiating a tissue under test of the portion of an organismsuch that a scanning point of the tissueunder test irradiates out an acoustic wave when the scanning point is expanding and shrinking. The second light source is arranged for emitting a second light wave with a predetermined wavelength to irradiate the tissue under test such that the second light wave interact with the acoustic wave irradiated by the scanning point. The optical detector is arranged for receiving a light wave signal comprising of the second light wave modulated by the acoustic wavethrough the interaction. The processing device is arranged for receiving the light wave signal, and reconstructing a tomographic imageof the tissue under test according to the light wave signal.本發明係揭露一種組織掃描成像系統及其光聲光學斷層造影方法組織掃描成像系統。此系統包含一第一聚焦光源、一第二聚焦光源、一光檢測器及一處理裝置。第一聚焦光源係以一第一預定波長之一第一光波照射掃描一生物局部之一待檢組織,使待檢組織之一掃描點進行膨脹與收縮後,由此掃描點發出一聲波。第二聚焦光源係以一第二預定波長之一第二光波照射待檢組織,以與掃描點所發出之聲波產生交互作用。光檢測器係接收經交互作用後第二光波被聲波所調變後之一光波訊號。處理裝置係接收光波訊號,以根據光波訊號重建對應於待檢組織之一深層影像。100...組織掃描成像系統1...第一聚焦光源11...第一光波2...第二聚焦光源21...第二光波3...光檢測器31...光波訊號4...處理裝置202...聲波
