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. Author manuscript; available in PMC: 2020 Jul 13.
Published in final edited form as: Int J Comput Assist Radiol Surg. 2019 Mar 12;14(6):913–922. doi: 10.1007/s11548-019-01943-z

Fig. 4.

Fig. 4

Multiple views of IFFs are shown in a–c. d, e show the augmentation of the virtual view frustum and the corresponding C-arm images from two views on a pelvis and a spine phantom