PROBLEM TO BE SOLVED: To provide a data processing apparatus capable of improving efficiency of radiologic interpretations without requiring radiologic interpretations per time phase by putting together the data of different time phases into a single piece of image data by compositing the data of color channels of each of the time phases acquired by a converting means.SOLUTION: The difference between image data of each of time phases (hepatic-arterial phase, portal-venous phase and hepatobiliary phase) after administering a contrast medium to a subject and image data before administration of the contrast medium to the subject is obtained. Then, the image data of the time phase after the differentiation corresponding to the hepatic-artery phase are converted into the data of a red channel, the image data of the time phase after the differentiation corresponding to the portal-venous phase are converted into the data of a blue channel, and the image data of the time phase after the differentiation corresponding to the hepatobiliary phase are converted into the data of a green channel. Then, the data of color channels of hepatic-arterial phase, portal-venous phase and hepatobiliary phase are composited to create RGB image data.COPYRIGHT: (C)2013,JPO&INPIT【課題】読影効率を改善する。【解決手段】被検体に造影剤を投与した後の各時相(肝動脈相、門脈相、肝細胞造影相)の画像データと、被検体に造影剤を投与する前の画像データとの差分を求める。そして、肝動脈相に対応する差分後の時相の画像データを、赤チャンネルのデータに変換し、門脈相に対応する差分後の時相の画像データを、青チャンネルのデータに変換し、肝細胞造影相に対応する差分後の時相の画像データを、緑チャンネルのデータに変換する。次に、肝動脈相、門脈相、肝細胞造影相の色チャンネルのデータを合成し、RGB画像データを作成する。【選択図】図7
