The Acuity system from Varian combines advanced 2D and 3D Cone Beam CT (CBCT) imaging techniques and software capabilities to provide support in planning, basic simulation, complex treatment plan verification and brachytherapy in a single fully integrated system. The Acuity planning, simulation and verification system is completely optimized to provide a intensity-modulated radiation therapy (IMRT) and image-guided radiation therapy (IGRT). Acuity is designed to enable clinicians prepare effective treatment plans and enhance patients treatment. Acuity also enables to plan and treat BrachyTherapy patients which involves carrying out of the entire process in a single room itself rather than multiple rooms in the hospital or department. Acuity is designed to work with CT simulators, and is regarded as the most popular verification and simulation system available in the market with successful treatment of over 300 customers by supporting planning, basic simulation, complex treatment plan verification and brachytherapy.