Figure 2
From: Modelling ultrasound-induced mild hyperthermia of hyperplasia in vascular grafts
Pressure magnitude in the central plane aligned with the graft length from the FDTD model. (a) The focal zone of pressure produced by the 1.5-MHz transducer extends across the graft. In contrast, (b) the focal zone of pressure produced by the 3.2-MHz transducer covers only the rear graft wall. Intimal hyperplasia models are shown. Both transducers were focused on the rear graft wall.