IMRT is a precision instrument for investigating and minimizing the impact of tumor motion inside the lung. It provides known, accurate and repeatable three-dimensional target motion inside a tissue equivalent phantom. It is designed for comprehensive analysis of image acquisition, planning and dose delivery in image-guided radiation therapy.
The phantom body represents an average human thorax in shape, proportion and composition. A lung equivalent rod containing a spherical target and or various detectors is inserted into the lung equivalent lobe of the phantom. The body is connected to a motion actuator box that induces three-dimensional target motion through linear translation and rotation of the lung equivalent rod. Motion of the rod itself is radiographically invisible due to its matching density with the surrounding material. The target and its motion, given its density difference, can be resolved.
Target and surrogate motion are independently controlled with IMRT Motion Control Software. The graphical user interface provides an unlimited variety of motions while simplifying the operation of the Dynamic Thorax Phantom to an intuitive level. Patient specific profiles are easily imported and there is no need to make hardware adjustments or have special programming skills.
IMRT offers ease of use and portability as well as a flexible selection of motion profiles and dosimeter options. All components are packaged in a protective case. The system requires minimal set-up and can be ready to use in minutes.
IMRT Software presents a sophisticated solution for the complex challenges and emerging technologies in Image-Guided Radiation Therapy.
IMRT Motion Control Software, a user-friendly graphical user interface that can be installed on any computer running Windows XP, 7.
Amplitude, cycle time and phase shift can be applied to both the surrogate and main phantom using slider bars or by entering desired values within the limits of the system. Five different waveforms are available from a standard pull down menu.
An unlimited number of clinically relevant and patient specific waveforms or correlation models can be imported from tab delimited or comma separated file formats.
There are also waveform editing, smoothing and analysing tools to ease the optimization of custom waveforms. All motion files can be saved for future use.
Users can instantly start, stop or pause the motion at any time. New start positions can be graphically selected and applied making the device very useful for static test as well as dynamic testing. Users can also select the number of cycles to be looped by entering the desired value or choose continuous looping (1 million cycles).