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. 2023 Aug 31;15(8):e44492. doi: 10.7759/cureus.44492

Figure 7. Dose distributions of the second single-fraction stereotactic radiosurgery.

Figure 7

The images show representative IDLs (solid lines) superimposed onto (A-C) axial CE-T1-WIs: (A) the left parietal lesion; (B) the right frontal lesion; and (C) the right cerebellar lesion. 

(A-C) The percentage value in the parentheses following the absolute dose is the percentage of isodose relative to the maximum dose. The GTVs defined based on the visible masses on T2-WIs are conformally covered with the 20 Gy IDLs. The dose gradients from 20 to 16 Gy are generally steep in all the lesions.

IDLs, isodose lines; CE, contrast-enhanced; WIs, weighted images; GTVs, gross tumor volumes