@conference {Jain2007a,
	title = {C-arm calibration: is it really necessary?},
	booktitle = {Medical Imaging 2007: Visualization and Image-Guided Procedures},
	volume = {6509},
	number = {1},
	year = {2007},
	pages = {65092U},
	publisher = {SPIE},
	organization = {SPIE},
	doi = {10 1117/12 712301},
	url = {http://link aip org/link/?PSI/6509/65092U/1},
	author = {Ameet K. Jain and Michael An and Nicha Chitphakdithai and Gouthami Chintalapani and Gabor Fichtinger}
}
