Measurements inside the entire phantom volume

OCTAVIUS® 4D always measures the dose in the isocenter. It rotates the detector synchronously with the gantry, covering the complete volume of the phantom, including the important target volume around the isocenter. OCTAVIUS 4D thus provides you with the most complete and accurate picture of the dose delivered to the patient.    

The maximum number of measurement points that can be achieved depends on the treatment plan and detector used. For a typical RapidArc plan with a single 360 rotation at a speed of 6 per second, OCTAVIUS 4D allows to acquire e.g. up to 800,000 measurement points when used in combination with the OCTAVIUS 1500 detector array as the OCTAVIUS detector performs up to ten measurements per second for each of its 1405 detectors.

 

Fig. 1: Measurerments inside the entire phantom volume
Simplified illustration showing measurement positions (blue) obtained with OCTAVIUS 4D (right) compared to other dosimetry systems which measure either outside the target volume in the low dose area (left) or far fewer measurement planes (center).