Limb positioning and calibration apparatus for radiographic imaging

摘要: Devices and apparatus for limb positioning instrument calibration are disclosed use in radiographic imaging systems. In one aspect of the invention, a device is disclosed, including support surface placement (e.g., typically wrist) thereon, pair side blocks, at least which moveable to accommodate therebetween, biasing mechanism urging blocks together, clamping immobilizing between upon surface. another means radiation source detector, two material having different absorptive properties, each block being disposed adjacent also such that differences intensity transmitted through materials can be sensed detector used calibrate images during operation. embodiment, dissimilar further include bone equivalent tissue material.