RADIATION LAMINAGRAPHY APPARATUS

摘要

Provided is a radiation laminagraphy apparatus of which maintenance can be easily performed. The radiation laminagraphy apparatus includes a detection ring (12) equipped with a plurality of rings (12a). A ring (12a) is so moved as to approach an adjacent ring, whereby the rings are connected to each other. If radiation laminagraphing is performed under such a state that a gap is formed between the rings (12a), detection sensitivity of the detection ring (12) is lowered due to the gap. However, according to this apparatus, a ring (12a) is so moved as to approach an adjacent ring (12a), whereby the gap is decreased and radiation which is not observed can be reduced as much as possible.