Detecting hemodynamic changes in the foot vessels of diabetic patients by photoacoustic tomography

Jinge Yang, Zhang Guang, Qiquan Shang, Man Wu, Lin Huang, Huabei Jiang

2020Journal of Biophotonics37 citationsDOI

Abstract

Abstract 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.

Topics & Concepts

HemodynamicsMedicineDiabetes mellitusDiabetic footPerfusionOcclusionPeripheralVascular occlusionCardiologyUltrasoundPhotoacoustic imaging in biomedicineFoot (prosody)Internal medicineRadiologyEndocrinologyPhilosophyOpticsPhysicsLinguisticsPhotoacoustic and Ultrasonic ImagingDiabetic Foot Ulcer Assessment and ManagementOptical Imaging and Spectroscopy Techniques