Acta Optica Sinica, Volume. 25, Issue 6, 772(2005)
Limited-View Scanning Photoacoustic Imaging Based on Algebraic Reconstruction Techniques
Since the reconstruction with the filtered backprojection (FBP) algorithm needs sufficient views to all points in the “detection region”, it requires a quite long time to get enough data, which restricts the application in the medical field. The limited-view photoacoustic imaging based on algebraic reconstruction techniques (ART) was studied. A Q-switched Nd∶YAG laser operating at 1064 nm was used as light source. The laser had a pulse width of 6 ns and a repetition frequency of 20 Hz. A needle polyning lidene difluoride (PVDF) hydrophone with diameter of 1 mm was used to detect photoacoustic signals. The simulations and experiments demonstrated that ART works well for limited-view data in photoacoustic imaging, and ART can improve the resolution and contrast of reconstruction images compared with the FBP. Limited-view photoacoustic imaging based on ART has far-reaching significance to noninvasive medical inspectable technology.
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[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Limited-View Scanning Photoacoustic Imaging Based on Algebraic Reconstruction Techniques[J]. Acta Optica Sinica, 2005, 25(6): 772