Spectral CT Verida Family

The Spectral CT Verida Family is a Computed Tomography X-Ray System intended to produce cross-sectional images of the body by computer reconstruction of x-ray transmission data taken at different angles and planes. This device may include signal analysis and display equipment, patient and equipment support, component parts, and accessories.

The Spectral CT Verida Family system acquires one CT dataset – composed of data from a higher-energy detected x-ray spectrum and a lower- energy detected x-ray spectrum. The two spectra may be used to analyze the differences in the energy dependence of the attenuation coefficient of different materials. This allows for the generation of images at energies selected from the available spectrum and to provide information about the chemical composition of the body materials and/or contrast agents. Additionally, materials analysis provides for the quantification and graphical display of attenuation, material density, and effective atomic number.

This information may be used by a trained healthcare professional as a diagnostic tool for the visualization and analysis of anatomical and pathological structures in patients of all ages, and to be used for diagnostic imaging in radiology, interventional radiology, and cardiology and in oncology as part of treatment preparation and radiation therapy planning. The Extended field of view images and respiratory correlated scanning (4DCT) are for treatment preparation and radiation therapy planning/simulation usage only. This device is indicated for head, whole body, cardiac and vascular X-ray Computed Tomography applications in patients of all ages.

The system is also intended to be used for low dose CT lung cancer screening for the early detection of lung nodules that may represent cancer*. The screening must be performed within the established inclusion criteria of programs / protocols that have been approved and published by either a governmental body or professional medical society.

The system incorporates both conventional iterative reconstruction (IR) and artificial intelligence (AI)-based reconstruction functionality. Spectral Precise Image (SPI) is an AI-based deep learning reconstruction feature intended to optimize image quality by reducing noise and enhancing image appearance in Head, Whole Body, Cardiac, and Vascular X-ray Computed Tomography applications. Clinical performance evaluation of the SPI feature was conducted in adult patients (>22 years of age). The use of SPI in pediatric populations has not been clinically validated.

AI-based reconstruction outputs are intended to provide supplemental data for clinical interpretation and do not replace professional clinical judgment. Image quality and reconstruction performance may be subject to variability based on patient anatomy, body habitus, physiological motion, and technical acquisition conditions. It is the responsibility of the clinician to select the reconstruction method appropriate for the specific clinical task and patient population.

*Please refer to clinical literature, including the results of the National Lung Screening Trial (N Engl. J Med 2011; 365:395-409) and subsequent literature, for further information.