Fig. 2From: Anatomic change over the course of treatment for non–small cell lung cancer patients and its impact on intensity-modulated radiation therapy and passive-scattering proton therapy deliveriesAnatomic change and mean variations in a typical patient enrolled in the passive scattering proton therapy (PSPT) group, who received adaptive radiotherapy (ART) at week 4. a Anatomic changes in transverse planes of the representative CT slides from the T50 (end-expiration) series acquired at weeks 0 (planning CT), 1, 4, and 6. b Mean variations in the clinical target volume (CTV) and spinal cord from planning CT over the course of treatmentBack to article page