The Effect of Increasing C-arm SID: Improving Image Resolution and Positioning Accuracy
The Effect of Increasing C-arm SID: Improving Image Resolution and Positioning Accuracy SID is an important technical parameter in C-arm system s. It refers to the distance from the focal point (filament) of the X-ray tube to the image receptor, also known as source-to-image distance or focus-to-screen distance. The adjustment of SID in C-arm equipment has various impacts on clinical operations and imaging results. Increasing the SID primarily affects the following three aspects: Optimizing Image Resolution and Geometric Accuracy Increasing the SID reduces the geometric magnification effect , minimizing edge blurring and distortion caused by excessive magnification. This improves both image resolution and positioning accuracy. This is especially important in surgeries requiring high-precision positioning, such as orthopedic 3D imaging and vascular interventions. Expanding the Surgical Workspace By increasing the SID through adjusting the position of the flat-panel detector, ...