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Detecting hemodynamic changes in the foot vessels of diabetic patients by photoacoustic tomography
Author(s) -
Yang Jinge,
Zhang Guang,
Shang Qiquan,
Wu Man,
Huang Lin,
Jiang Huabei
Publication year - 2020
Publication title -
journal of biophotonics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 66
eISSN - 1864-0648
pISSN - 1864-063X
DOI - 10.1002/jbio.202000011
Subject(s) - hemodynamics , medicine , diabetes mellitus , diabetic foot , perfusion , occlusion , peripheral , vascular occlusion , cardiology , ultrasound , photoacoustic imaging in biomedicine , foot (prosody) , radiology , endocrinology , linguistics , philosophy , physics , optics
Limb perfusion monitoring is critical for diabetes mellitus (DM) patients as they are vulnerable to vascular complications due to prolonged hyperglycemia. However, current clinical approaches are ineffective in vascular imaging and in assessing vascular function in lower limbs. In this work, a concave ultrasound transducer array‐based photoacoustic tomography (PAT) system was used to image the foot dorsal section of a subject, and a total of seven DM patients and seven healthy volunteers were enrolled in this study. Hemodynamic changes in foot vessels during vascular occlusion as well as oxygen saturation (SO 2 ) in rest were analyzed for both groups. The results obtained showed that DM patients have a unique peripheral hemodynamic response to occlusion and a lower level SO 2 , compared to that for healthy subjects. This suggests that PAT has the potential to detect vascular dysfunction in DM patients and to measure the effect of treatment.