Hello, Julien Finet,I collected the centerline coordinates, and then rendered an image in Straightened Mode. Why is there a missing section? Switching to Stretched Mode is normal. Maybe I don’t know the rules for the centerline coordinates. According to your reply, I configured RCW like this: const widget = vtkResliceCursorWidget.newInstance({ planes: ['X', 'Y', 'Z'] });