@conference {Boctor2005b,
	title = {Ultrasound Self-Calibration and Real-Time Quality Control for Interventions},
	booktitle = {IEEE International Ultrasonics Symposium},
	year = {2005},
	author = {Emad Boctor and Iulian Iordachita and Gabor Fichtinger and Gregory D. Hager}
}
