@conference {Underwood2017,
	title = {Skull registration for prone patient position using tracked ultrasound},
	booktitle = {SPIE Medical Imaging 2017},
	year = {2017},
	author = {Underwood, Grace and Tamas Ungi and Zachary M C Baum and Andras Lasso and Gernot Kronreif and Gabor Fichtinger}
}
