| 摘要 |
<p>A filmless X-ray imaging system includes at least one X-ray source (2), upper (38) and lower (44) collimators, and a solid state detector array (48), and can provide three-dimensional imaging capability. The X-ray source plane is distance z1 above upper collimator plane, distance z2 above the lower collimator plane, and distance z3 above the plane of the detector array. The object to be X-rayed is located between the upper and lower collimator planes. The upper and lower collimators and the detector array are moved horizontally with scanning velocities v1, v2, v3 proportional to z1, z2 and z3, respectively. The pattern and size of openings in the collimators, and between detector positions is proportional such that similar triangles are always defined relative to the location of the X-ray source.</p> |
