PROBLEM TO BE SOLVED: To provide a three-dimensional CT measuring apparatus capable of precisely imaging a long subject in a short period of time and obtaining smooth three-dimensional CT image data.SOLUTION: The three-dimensional CT measuring apparatus for measuring a small animal by micro CT includes: an imaging unit for rotationally irradiating a subject with an X-ray cone beam and imaging the subject 45 in each rotation a moving unit for moving the subject in parallel in a direction B vertical to an X-ray irradiation direction for a three-dimensional imaging range L for one rotation by rotational irradiation a reconfiguration unit for reconfiguring respective three-dimensional partial data from the imaged data for each rotation by the rotational irradiation a correction unit for correcting coordinates of one of the three-dimensional partial data adjacent to each other at the position of high correlation for each connecting plane of the plane data of the respective connecting planes of the three-dimensional partial data among the reconfigured three-dimensional partial data and a connecting unit for connecting the two or more pieces of three-dimensional partial data through the plane data of the respective connecting planes of the three-dimensional partial data adjacent to each other by the corrected coordinates.COPYRIGHT: (C)2011,JPO&INPIT【課題】長尺の被検体を短時間で精密に撮像し、滑らかな3次元CT画像データを得られる3次元CT測定装置を提供する。【解決手段】小動物をマイクロCTにより測定する3次元CT測定装置であって、被検体にX線コーンビームを回転照射し、1回転ごとに被検体45を撮像する撮像部と、回転照射による1回転分の3次元撮像範囲Lだけ、X線照射方向に垂直な方向Bに、被検体を平行移動させる移動部と、回転照射による各回転分の撮像データから、各3次元部分データを再構成する再構成部と、再構成された3次元部分データのうち、3次元部分データの各結合面の平面データの各結合面について相関の高い位置に隣り合う3次元部分データの一方の座標を補正する補正部と、補正された座標で隣り合う3次元部分データの各結合面の平面データを介して、複数の3次元部分データを結合する結合部とを備える。【選択図】図3
