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FIG 1. Flowchart shows the three steps involved in 3D-FDSA image reconstruction. The first (outlined in blue) consists in a standard 3D-DSA reconstruction. The rotational mask acquisition is subtracted from the rotational contrast acquisition. The Feldkamp method is applied to the resulting subtracted rotational data set to obtain the 3D-DSA reconstruction. The second step (outlined in red) consists in the reconstruction of the rotational mask acquisition into a 3D osseous representation (3D-bone) by using a modified Feldkamp method. The third step (outlined in black) is the combination of the two 3D reconstructions obtained in step 1 and 2 into a fused 3D volume.
