Noninvasive Evaluation of Injectable Chitosan/Nano-Hydroxyapatite/Collagen Scaffold via Ultrasound
Figure 1
Ultrasound imaging of the injection process of the in situ formation of the CS and CS/nHAC gel: (a) subcutaneous injection of the CS/nHAC solution under the ultrasound transducer. (b) The injection process was monitored by ultrasound (arrow: the needle of the syringe).
