When measuring work pieces with high radiographic length or high material density, such as cylinder heads or turbine blades, scattered radiation and cone beam artifacts often occur.  They make inspection tasks more difficult and increase measurement uncertainty when capturing geometric properties.  Some features on work pieces that are hard to penetrate are thus difficult or impossible to measure. These interference effects can now be greatly reduced for Werth CT coordinate measuring machines, with the use of scattered radiation artifact reduction (SAR), a special aperture in the X-ray beam path, and a corresponding operating mode for raster tomography. When the aperture is used in raster mode, only part of the work piece is exposed, which reduces the proportion of scattered radiation.  The matching detector region is chosen automatically.  Alternatively, the height of the active detector area can be adjusted and the planar detector can be used like a line sensor.  Limiting the detector range reduces cone beam artifacts as well. With Flexible adjustment of the line width, an optimal compromise between measurement time and quality of the measurement results can be achieved.  The flexibility of the coordinate measuring machine is increased, eliminating the need for a separate investment in a line sensor, as the area sensor can incorporate this function when needed.  SAR scattered radiation artifact reduction allows highly accurate measurements of the entire work piece, with reduced artifacts even for work pieces that have always been difficult to measure.