Copyright ©2014 Baishideng Publishing Group Inc.
World J Radiol. Jul 28, 2014; 6(7): 459-470
Published online Jul 28, 2014. doi: 10.4329/wjr.v6.i7.459
Figure 4
Figure 4 Ultrasound detection of halloysite clay nanotube. A: Gel sample echographic images of pure and agarose containing halloysite clay nanotube (HNT) at the indicated concentrations; B: Quantitative analysis of backscattered signal as a function of ultrasonic frequency and HNT concentration. SER: Signal enhancement ratio; CoFI: Contribution of frequency increment.