| 摘要 |
PURPOSE:To shorten the time required in the judgement of the code of the coordinates value of a treatment place by mounting a plurality of contrast markers to a fixing device for treating the head of an examinee so as to asymmetrically arrange them up and down as well as left and right. CONSTITUTION:For example, a brain stereotaxy apparatus for X-ray CT photographing is composed by combining a treatment fixing device 1 and a plurality of contrast markers 2. The treatment fixing device 1 is fixed to the head PH of an examinee P by screws and also fixed and arranged to a top plate 3 at the time of photographing and a plurality of the contrast markers 2 are mounted to the treatment fixing device 1 so as to be respectively arranged asymmetrically up and down as well as left and right. By this constitution, since a plurality of the contrast markers respectively appear as images asymmetrically up and down as well as left and right as the positioning indice of brain stereotaxy along with the reconstitution image of a brain cross-section or a brain surface, the code of a coordinates value determined by a photographing direction becomes obvious and much labor confirming the direction of the coordinates value becomes unnecessary. |
