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. Author manuscript; available in PMC: 2022 Mar 1.
Published in final edited form as: J Neuroimaging. 2020 Dec 28;31(2):317–323. doi: 10.1111/jon.12828

Figure 1.

Figure 1.

Representative pre- and early post-SRS MR images from an 80-year-old female with right occipital lobe brain metastasis that eventually demonstrated PD on follow-up.

Top panel: The yellow rectangle surrounds the metastatic lesion on the pre-SRS DWI (b=0 s/mm2) image. Diffusion coefficient (D) (× 10−3 mm2/s), pseudo-diffusion coefficient (D*) (× 10−3 mm2/s), and perfusion fraction (f) maps are zoomed in at the locations of the regions of interest (ROIs). The lesion volume was unchanged within 72 hours of SRS. Bottom panel: The yellow rectangle surrounds the metastatic lesion on the pre-SRS T1-postcontrast image. Ktrans (min−1), volume fraction of extracellular extravascular space (ve), and vascular volume (vp) maps are zoomed in at the locations of the ROIs.