Fig. 2From: Intracellular hypoxia measured by 18F-fluoromisonidazole positron emission tomography has prognostic impact in patients with estrogen receptor-positive breast cancerSurvival curves. a Disease-free survival (DFS). b Overall survival (OS). c DFS stratified by estrogen receptor (ER) status. d OS stratified by ER status. The tentative cutoff value of 1.48 separates tumors with higher 18F-fluoromisonidazole tissue-to-blood ratio (TBR high) from those with lower 18F-fluoromisonidazole tissue-to-blood ratio (TBR low)Back to article page