BME Frontiers / 2020 / Article / Fig 7

Research Article

Functional Photoacoustic and Ultrasonic Assessment of Osteoporosis: A Clinical Feasibility Study

Figure 7

PA time-frequency spectra measured from the human calcaneus bones in vivo. (a, b) PA time-frequency spectra from the calcaneus bone of an osteoporosis patient before and after compensating the ultrasound attenuation. (c, d) PA time-frequency spectra from the calcaneus bone of a control volunteer before and after compensating the ultrasound attenuation.