| 摘要 |
<p>The phantom has a core arranged in a box-type support (1). The core is made from cubical units, pyramid units, parallelepiped units, and a residual unit, each unit having different densities. The different densities of the units simulate the densities of organs e.g. bone of human body. Balls are arranged in the core, and removable lateral faces (18, 21) are placed opposite each other and enclose metallic wires defining geometric figures.</p> |
