Fig. 7From: Beam filtration for object-tailored X-ray CT of multi-material cultural heritage objectsFrom left to right, top to bottom: Radiographs of the “Green velvet purse” with different tube voltages between 20kV and 50kV in 5kV steps with the same tube current (\({1000}\,\upmu {\hbox {A}}\)), same exposure time (\({200}\,\hbox {ms}\)) and no filtrationBack to article page