Arias, S., Lee, H., Semaan, R., Frimpong, B., Ortiz, R., Feller-Kopman, D., Oakjones-Burgess, K., Yarmus, L. Use of Electromagnetic Navigational Transthoracic Needle Aspiration (E-TTNA) for Sampling of Lung Nodules. J. Vis. Exp. (99), e52723, doi:10.3791/52723 (2015).