Abstract:Rapid development of ultrafast ultrasound imaging method has led to novel ultrasound imaging modalities. These novel imaging modalities significantly improve the accuracy and specificity on disease diagnosis and they all need high imaging fame rate to enable accurate tracking of transient tissue variation. However, current ultrafast imaging methods are all based on linear array, convex array or planar array, they haven’t been fully used on endoscopic ultrasonic (EUS) circular array. Therefore, it is still difficult to implant these methods on EUS. To solve this problem, three kinds of ultrafast imaging methods with EUS circular array were studied. The theoretical analysis on image reconstruction and simulation experiments were implemented. The results show that all the methods can improve the imaging frame to nearly 1 kHz with lateral resolution not wider than 2 mm.