| 摘要 |
PROBLEM TO BE SOLVED: To confirm a source stop position at the time of a sealed small source radiotherapy by a source position confirming instrument and to perform the sealed small source radiotherapy as planned. SOLUTION: The source position confirming instrument composed of a tube 1 inserted between an absorption plate 3 and a holding material 2 is installed between a sealed small source and an image intensifier and the source stop position of the sealed small source is confirmed by the shape of an object to be image picked up. |
