Noninvasively measuring oxygen saturation of human finger-joint vessels by multi-transducer functional photoacoustic tomography.
Imaging small blood vessels and measuring their functional information in finger joint are still challenges for clinical imaging modalities. In this study, we developed a multi-transducer functional photoacoustic tomography (PAT) system and successfully imaged human finger-joint vessels from ∼1  mm to <0.2  mm in diameter. In addition, the oxygen saturation (SO2) values of these vessels were also measured. Our results demonstrate that PAT can provide both anatomical and functional information of individual finger-joint vessels with different sizes, which might help the study of finger-joint diseases, such as rheumatoid arthritis.
Zijian
Z
Deng
Changhui
C
Li
D005384:Finger Joint / Q000098:blood supply* / Q000000981:diagnostic imaging*; D006801:Humans; D010100:Oxygen / Q000032:analysis*; D061088:Photoacoustic Techniques; D013057:Spectrum Analysis; D014054:Tomography
D010100:Oxygen