“…20,21 Specifically, template matching has been widely used to track the vascular structures and tumors in the lung with dynamic MR images for various studies in the radiotherapy context. [22][23][24][25][26][27][28][29][30] However, validation of this technique with ground truth established by physicians has rarely been provided. Recently, with the help of manually determined ground truth, Cervino et al validated the superior performance of template matching in tracking the position of vascular structures with cine-MR images of healthy volunteers.…”