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GTV to ITV margin expansion and respiratory fiducial motion for all patients. a. GTV(red) to ITV(black( expansion strategy. b. The motion range evaluated from breath-hold CTs for 11 patients (1–7 are pancreas patients, 8–11 are liver patients), with averages 0.6 (0–1.8) cm AP, 0.6 (0.1-1.5) cm SI, and 0.2 (0.1-0.7) cm RL.
