呼吸動態CTに表示される構造物には呼吸位相が反映されている

Respiratory phases are reflected in the dynamic respiratory CT image

呼吸とは空気中の酸素を体内に取り込む機能であり，外界から体内へ酸素を取りこむ部分を外呼吸と呼ぶ。肺内に取り込まれた空気から肺胞内で酸素を血液中に取り込み，二酸化炭素を血中から肺胞内へ排出する。CTなどにより動的に観察できる呼吸は主に外界から肺内へ空気を取り込む過程である。

Currently, the technological advances of 320-row ADCT enabled dynamic respiratory scanning, which continuously scans the thorax under respiration. In addition, quantitative analysis by 4D dynamic tracking technology became possible.

Clinically, this procedure is used for preoperative examination of lung cancer patient.

This report showed the kinetic analysis of the anatomical structures, thorax, bronchi and regional lung parenchyma in the dynamic respiratory CT image. Any structures are well correlated with the movement of the diaphragm and thorax. Therefore, the respiratory phases are reflected in the dynamic respiratory CT image.