CT scan test phantom Vista™

general purpose

Vista™ 16 is a high-resolution optical CT scanner used to process 3D dosimeters, including radiochromic gels and solids. With the use of Clearview™ gel and Vista™ ACE processing software (in development), physicists will have a complete, true 3D dosimetry solution. Vista™ 16 reconstructs a 3D map of optical attenuation coefficients within an object suspended in the scanner’s region of interest. This is done by capturing a series of 2D optical projections through the region of interest while the object is rotated. The 3D map is then constructed using Feldkamp-filtered back projection. The system is designed to work with radiochromic 3D dosimeters such as ClearView™ which have an absorption peak at 590 nm. Various wavelengths are available upon request for different dosimeters and applications. Vista™ 16 is capable of scanning objects up to 15 cm diameter by 12 cm long. Isotropic voxel sizes of 0.25 mm are achievable, providing high-resolution, true 3D dose data. VistaScan™ software is included for scanning, reconstruction and display. Data is fully accessible for treatment plan verification and research applications. Features Low Stray Light Convergent light source improves accuracy and precision of image data reconstruction. Fast Acquisition, reconstruction and display of optical CT images in approximately five minutes. Workflow Efficiency Simple on-screen controls and straightforward workflow make for an intuitive 3D dosimeter analysis solution. Flexible Different light sources (wavelengths) are available upon request for optimization with various dosimeters. Easily swap the liquid-filled aquarium for different index of refraction matching liquids.