Examination apparatus for examination of an object of interest, comprising: a storage unit for providing image data of an image of the object of interest, the image data comprising object data and non-object data; a processing unit configured to perform the following steps: segmenting from the image data the object data and the non-object data; determining a line, which is an iso-contour and extends at a constant distance from a boundary of the object of interest or which extends along a constant thickness of the object of interest; generating a minimum filtered image by performing a minimum filtering of the object data along the iso-contour, thereby replacing a higher intensity value of a first pixel positioned on the iso-contour by a lower intensity value of a second pixel positioned on the iso-contour and in the neighborhood of the first pixel; performing a peripheral equalization of the object data by: determining a background data estimate by low-pass filtering the minimum-filtered image; subtracting the background data estimate from the image data; adding a desired homogenous background attenuation image to the image data. a storage unit for providing image data of an image of the object of interest, the image data comprising object data and non-object data; a processing unit configured to perform the following steps: segmenting from the image data the object data and the non-object data; determining a line, which is an iso-contour and extends at a constant distance from a boundary of the object of interest or which extends along a constant thickness of the object of interest; generating a minimum filtered image by performing a minimum filtering of the object data along the iso-contour, thereby replacing a higher intensity value of a first pixel positioned on the iso-contour by a lower intensity value of a second pixel positioned on the iso-contour and in the neighborhood of the first pixel; performing a peripheral equalization of the object data by: determining a background data estimate by low-pass filtering the minimum-filtered image; subtracting the background data estimate from the image data; adding a desired homogenous background attenuation image to the image data. segmenting from the image data the object data and the non-object data; determining a line, which is an iso-contour and extends at a constant distance from a boundary of the object of interest or which extends along a constant thickness of the object of interest; generating a minimum filtered image by performing a minimum filtering of the object data along the iso-contour, thereby replacing a higher intensity value of a first pixel positioned on the iso-contour by a lower intensity value of a second pixel positioned on the iso-contour and in the neighborhood of the first pixel; performing a peripheral equalization of the object data by: determining a background data estimate by low-pass filtering the minimum-filtered image; subtracting the background data estimate from the image data; adding a desired homogenous background attenuation image to the image data. determining a background data estimate by low-pass filtering the minimum-filtered image; subtracting the background data estimate from the image data; adding a desired homogenous background attenuation image to the image data.