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. Author manuscript; available in PMC: 2015 Jan 8.
Published in final edited form as: Int J Radiat Oncol Biol Phys. 2008 Dec 10;74(3):781–789. doi: 10.1016/j.ijrobp.2008.08.053

Figure 3.

Figure 3

Comparison between the average increases of CT-based lung density, the average decreases of SPECT-based lung perfusion, and their associations with percent reductions in PFTs for patients with concurrent PFTs, CT, and SPECT scans.