With the applications of 3D conformal radiotherapy and intensity modulated radiation therapy, the more conformal, higher dose of target volumes and lower complicate of the normal tissue become possible. At the same time, higher dose gradients between the target volumes and the normal tissues appear. The precision of patient positions and organ motion become important [...]

With the applications of 3D conformal radiotherapy and intensity modulated radiation therapy, the more conformal, higher dose of target volumes and lower complicate of the normal tissue become possible. At the same time, higher dose gradients between the target volumes and the normal tissues appear. The precision of patient positions and organ motion become important [...]

With the applications of 3D conformal radiotherapy and intensity modulated radiation therapy, the more conformal, higher dose of target volumes and lower complicate of the normal tissue become possible. At the same time, higher dose gradients between the target volumes and the normal tissues appear. The precision of patient positions and organ motion become important [...]

With the applications of 3D conformal radiotherapy and intensity modulated radiation therapy, the more conformal, higher dose of target volumes and lower complicate of the normal tissue become possible. At the same time, higher dose gradients between the target volumes and the normal tissues appear. The precision of patient positions and organ motion become important [...]

With the applications of 3D conformal radiotherapy and intensity modulated radiation therapy, the more conformal, higher dose of target volumes and lower complicate of the normal tissue become possible. At the same time, higher dose gradients between the target volumes and the normal tissues appear. The precision of patient positions and organ motion become important [...]