A wide range of X-ray source and detector options combined with different reconstruction options makes the Inveon CT scanner capable of delivering high performance, resolution and speed for many applications.

X-ray Source

Standard Source: The 80 W, tungsten anode, 35-80 kVp standard source (less than a 50 micron focal spot) provides a high X-ray flux for high speed scanning and a large cone angle for high magnification studies. The maximum achievable resolution with this X-ray source and the standard detector is 40 microns. Typical scan times are less than 5 minutes.

Variable-focus Source: For ultra high resolution studies, a variable-focus X-ray source is available, which can operate in micro focus mode (less than 6 micron focal spot) providing a maximum resolution of 20 microns with both detector options. The same source can operate with a larger focal spot for high speed studies.

X-ray Detector

125 mm Detector: The detector has 3072 x 2048 pixels and may be configured for a FOV as large as 8.4 cm x 5.5 cm. With a 12 bit deep readout of the raw data, this detector has a dynamic range of 69 dB (1 x 1 binning) to 72 dB (2 x 2 and 4 x 4 binning), providing excellent signal-to-noise ratio. With the variable-focus X-ray source, the maximum resolution is 20 microns.

165 mm Detector: A large area detector for scanning larger animals is available with 4064 x 4064 pixels, providing a maximum FOV of 10 cm x 10 cm. With this detector, the field of view (FOV) permits the operator to crop each data set to match the geometry of the subject. With a 14 bit deep readout of the raw data, this detector has a dynamic range of 67 dB (1 x 1 binning) to 79 dB (2 x 2 binning) and 84 dB (4 x 4 binning), providing superior signal-to-noise ratio compared to the 125 mm detector. With the variable-focus X-ray source, the maximum resolution is 20 microns.

Data Reconstruction

Two reconstruction configurations are supported using a modified Feldkamp algorithm for fast, accurate volumetric image reconstruction.

• Standard – Volumetric reconstruction algorithm running on the data acquisition workstation
• Real Time – Reconstruction performed on a dedicated high speed platform during a scan. The real time reconstruction engine allows reconstruction to start as the projection data is being acquired. Reconstruction times depend on imaging protocol but can be complete by the end of the acquisition.