Figure 2From: Implementation of single-breath-hold cone beam CT guided hypofraction radiotherapy for lung cancerThe alignment of the tumor contours using CBCT and the relative tumor position. A: The alignment of the tumor contours using CBCT. The tumor contours in the reference CT image were aligned with those of the CBCT image because the tumor was highly visible in the CBCT image. B: The relative tumor positions defined in the coronal, sagittal and transverse axes.Back to article page