Fig. 4From: The occurrence and development of radiation-induced lung injury after interstitial brachytherapy and stereotactic radiotherapy in SD ratsThe difference of lung volume and CT value of the left and right lungs in SD rats. a Right lung volume checked by chest CT every 4 weeks. b Comparison of left lung volume among three groups. c Comparison of mean CT difference between left and right lungs of rats in three groups. *P < 0.05, **P < 0.01, *** P < 0.001Back to article page