A scanning apparatus includes a sample stage that faces an optical scanning head or stage at a scanning plane; a first actuator that translates the sample stage or the optical stage along a first axis that is substantially parallel to the scanning plane; a sensor that senses the deviation from the first axis; and a controller coupled to the first actuator, the sensor, and the optical stage. The system includes a fluid pump that pumps fluid from a container to a therapy device to treat a patient. A front left side camera views an area behind the vehicle and to a left thereof.