Fig. 4From: Quantitative imaging of bone remodeling in patients with a unicompartmental joint unloading knee implant (ATLAS Knee System)—effect of metal artifacts on a SPECT-CT-based quantificationPositioning of the standardized ROI set in the hybrid phantom (femur region) in correlation to the load absorber. a Positioning of the ROI set in the CT scan for analyzing the effect of the CT artifact from the joint-unloading prosthesis on HU values and b the corresponding attenuation corrected quantitative SPECT data. c Identic ROI setup transferred to a typical patient illustrating the correlation between the ROI set and the examined anatomic region (exemplified the femur region)Back to article page