1. MVCBCT at UCSF A Team Creation by Michèle Aubin IGRT Specialist Head & Neck Alignment

2. H&N Patient Here is a typical Coherence screen after the 3D image acquisition and the automatic registration are done for a head & neck patient.

3. - Click the Fusion Bending tool, and the Blending Dialog will appear.

4. - In the Blending Dialog window, slide to the left the blending tool (Cone Beam (CB) Image), - Select Invert Grayscale in the Lookup Table and, adjust the Window-Values tool. - In the Blending Dialog window, slide to the left the blending tool (Cone Beam (CB) Image), - Select Invert Grayscale in the Lookup Table and, adjust the Window-Values tool.

5. - In the Blending Dialog window, slide to the right the blending tool (CT Reference Image),

6. - Select Grayscale in the Lookup Table and, adjust the Window- Values tool.

7. - Slide the blending tool to 1/3. The CT and the CB appear together overlapping each other.

8. -Adjust the image with the Zoom tool.

9. - Click on the Manual Registration tool and adjust the CT over the CB in the three views (transversal, coronal and sagital). - Click on the Manual Registration tool and adjust the CT over the CB in the three views (transversal, coronal and sagital).

10. - When the adjustment is done, click the Accept button.

11. In the right bottom window are showed the table shifts: -On the left are the initial table coordinates. -On the middle are the new table coordinates (absolute). -On the right are the relative table moves. In the right bottom window are showed the table shifts: -On the left are the initial table coordinates. -On the middle are the new table coordinates (absolute). -On the right are the relative table moves.