Abstract: A phantom for simulating motions of both the body surface and the internal organs simultaneously, having a structure comprising of a body cell 12 and an internal organ part cell 2. The body cell 12 simulates a body. The internal organ part cell 2 is installed inside a body cell 12 and contains internal organ cells 11a and 11b which simulate internal organs like lung and others. Each of the body cell 12, the internal organ part cell 2 and the internal organ cells 11a and 11b has elastic surface and is able to expand like a balloon. Each cell is provided with a protrusion 170 for connecting a tube 40 to pass fluid.

Abstract: A phantom for simulating motions of both the body surface and the internal organs simultaneously, having a structure comprising of a body cell 12 and an internal organ part cell 2. The body cell 12 simulates a body. The internal organ part cell 2 is installed inside a body cell 12 and contains internal organ cells 11a and 11b which simulate internal organs like lung and others. Each of the body cell 12, the internal organ part cell 2 and the internal organ cells 11a and 11b has elastic surface and is able to expand like a balloon. Each cell is provided with a protrusion 170 for connecting a tube 40 to pass fluid.