A medical apparatus (200, 400, 500) comprising: - a high intensity focused ultrasound system comprising an ultrasound transducer (210,210') with multiple transducer elements for focusing ultrasound (216, 216') into a sonication volume, wherein there is a near field region (217, 217') between the ultrasonic transducer and the sonication volume, wherein the multiple transducer elements are controllable in groups, and wherein portions of the near field region overlap if two or more sonication volumes are adjacent to each other and/or within a predetermined distance; - a memory for storing machine executable instructions (260, 262, 264, 266, 408, 526); - a processor for controlling the medical apparatus, wherein execution of the instructions causes the processor to: - receive location data descriptive of multiple sonication points (224, 226, 228, 230); - determine a sonication path for each of the multiple sonication points using a geometric transducer element model; - detect the overlap region (256,306) using the sonication path for each of the multiple sonication points, wherein the overlap region indicates an overlap of the sonication path of two or more sonication points in the near field region; - determine transducer control commands using the overlap region, wherein the transducer commands are operable to control the multiple transducer elements to reduce the deposition of ultrasonic energy in the overlap region during sonication of the two or more sonication points; and - control the high intensity focused ultrasound system to sequentially sonicate the multiple sonication points using the transducer control commands. - a high intensity focused ultrasound system comprising an ultrasound transducer (210,210') with multiple transducer elements for focusing ultrasound (216, 216') into a sonication volume, wherein there is a near field region (217, 217') between the ultrasonic transducer and the sonication volume, wherein the multiple transducer elements are controllable in groups, and wherein portions of the near field region overlap if two or more sonication volumes are adjacent to each other and/or within a predetermined distance; - a memory for storing machine executable instructions (260, 262, 264, 266, 408, 526); - a processor for controlling the medical apparatus, wherein execution of the instructions causes the processor to: - receive location data descriptive of multiple sonication points (224, 226, 228, 230); - determine a sonication path for each of the multiple sonication points using a geometric transducer element model; - detect the overlap region (256,306) using the sonication path for each of the multiple sonication points, wherein the overlap region indicates an overlap of the sonication path of two or more sonication points in the near field region; - determine transducer control commands using the overlap region, wherein the transducer commands are operable to control the multiple transducer elements to reduce the deposition of ultrasonic energy in the overlap region during sonication of the two or more sonication points; and - control the high intensity focused ultrasound system to sequentially sonicate the multiple sonication points using the transducer control commands.