Three-dimensional imaging with an isocentric mobile C-arm (Siemens ISO-C-3D). Preliminary results for different joint fractures in comparison with plain radiography and computed tomography

To analyze a prototype mobile C-arm image amplifier (Iso-C3D) in the evalua tion of different joint fractures of the upper and lower limbs using multip lanar reconstruction (MPR). Different cadaver joint specimens (n=14) were examined with a prototype (Is o-C3D, Siemens AG, Erlangen, Germany), plain radiographs (CR), and spiral c omputed tomography (CT). The motorized C-arm provides fluoroscopic images d uring a 190 degrees orbital rotation computing a 119-mm data cube. These th ree-dimensional data sets yielded MPR images, which were evaluated by two r eaders for the detection and extent of fracture lines. Initial data show that fractures were easily depicted and correctly classif ied on MPR images with the Iso-C3D and that there was no difference between the lso-C and CT in the detection of fractures. The preliminary results suggest a remarkably good detection of joint fractu res with the Iso-C3D. Studies in an adequate number of patients are require d to elucidate whether these promising results can also be obtained in a cl inical setting.