X-ray phantom apparatus

A phantom assembly comprising:

• a tissue equivalent volume matrix bounded by a peripheral surface and having a radiation transmission characteristic substantially the same as a live tissue matrix having similar physical dimensions, said matrix having a principal axis, said matrix comprising:
• a plurality of adjacent sections, each pair of said adjacent sections including a pair of co-extensive adjacent surfaces, each pair of co-extensive adjacent surfaces defining a location where radiation sensitive film can be inserted, exposed and removed for imaging and
• at least one of said sections includes a portion, having a principal axis and being further divided into a plurality of adjacent subsections, each pair of adjacent subsections including a pair of co-extensive adjacent subsection surfaces, each pair of adjacent subsection surfaces defining a location where radiation sensitive film can be inserted, exposed and removed for imaging.

A method of verifying the radiation dose applied by a given treatment, said method of verifying comprising the steps of:

• providing a phantom assembly including a tissue equivalent volume matrix having a radiation transmission characteristic substantially the same as a tissue matrix to be treated, said matrix including at least two mutually non-parallel locations where radiation sensitive film can be inserted, exposed and then removed for imaging,
• inserting at least one piece of radiation sensitive film in at least one of said mutually non-parallel locations, and
• applying said radiation dosage for said given treatment to said phantom assembly and said radiation sensitive film.

A phantom assembly comprising:

• a tissue equivalent volume matrix bounded by a peripheral surface and having a radiation transmission characteristic substantially the same as a living tissue matrix, said volume matrix including at least two locations extending from said peripheral surface into said volume matrix where radiation sensitive film can be inserted, exposed and then removed for imaging, wherein said at least two locations are slits, each substantially cylindrical and wherein said slits are substantially concentric.