Figure 4From: The feasibility of evaluating radiation dose to the heart by integrating kilovoltage-cone beam computed tomography in stereotactic body radiotherapy of early non-small-cell lung cancer patientsExternal margins in different axial directions. The margin on the sectional direction is 0.91Â cm and 1.29Â cm on the coronal plane. Similar margins were obtained for all other patient presented.Back to article page