PROBLEM TO BE SOLVED: To provide a gantry device accommodating to increase in the number of channels and high-speed rotation of a rotating gantry by retaining DC balance without requiring a stable period for adjusting the DC balance.SOLUTION: A gantry device 21 includes: an X-ray tube 51 for exposing X rays an X-ray detector 53 having a plurality of X-ray detection elements and detecting the X rays a DAS (Data Acquisition System) 54 for converting output data of the X-ray detector 53 into digital signals a rotating gantry 32 for holding the X-ray tube 51, the X-ray detector 53, and the DAS 54 and rotating with respect to a stationary gantry 31 and a contactless transmission/reception part 34 that includes a channel switching circuit 84 on the rotating gantry 32, the channel switching circuit for synchronizing timing of channel switching according to a view angle, with transmission completion timing of packet data formed by converting the output of the DAS 54, and transmits the packet data from the rotating gantry 32 to the stationary gantry 31 by the contactless communication system.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】架台装置において、DCバランスの調整のための安定期間を要することなくDCバランスを維持することで、チャンネルの数の増大や、回転架台の高速回転化に対応すること。【解決手段】架台装置21は、X線を曝射するX線管51と、複数のX線検出素子を有し、X線を検出するX線検出器53と、X線検出器53の出力データをデジタル変換するDAS54と、X線管51、X線検出器53、及びDAS54を保持し、固定架台31に対して回転する回転架台32と、ビュー角に従ったチャンネル切替のタイミングを、DAS54の出力が変換されたパケットデータの送信完了タイミングに同期させるチャンネル切替回路84を回転架台32に備え、回転架台32から固定架台31にパケットデータを非接触通信方式で送信する非接触送受信部34と、を有する。【選択図】 図1
