| 摘要 |
PCT No. PCT/GB94/02477 Sec. 371 Date Jul. 11, 1995 Sec. 102(e) Date Jul. 11, 1995 PCT Filed Nov. 11, 1994 PCT Pub. No. WO95/13018 PCT Pub. Date May 18, 1995An alignment apparatus for aligning x-ray images with a predetermined set of axes comprises means defining the axes in the form of a support arrangement which supports, at predetermined positions in space, located in at least two predetermined planes, a plurality of elements which are opaque to ex-radiation. An apparatus is also described for aligning an end effector comprising two spaced guide frames each having two parallel guide members with a carriage for movement along each of the guide members, the carriages being inter-connected by cross members, further carriages being mounted on the cross members, the further carriages supporting the end effector for guide means. |
