The present invention relates to a sleep apnea measuring apparatus and a method for diagnosing apnea based on an image corresponding to impedance data in each of a subject's upper airway and chest, and to an EIT (Electrical) using electrodes attached to the upper airway and chest. Impedance Tomography) is applied to visualize the air distribution in the lungs associated with upper airway opening and closing, and diagnose at least one of obstructive apnea, central apnea and complex apnea, A treatment plan can be set up accordingly. [Line selection diagram] Fig. 1本発明は、被験者の上氣道と胸部それぞれでのインピーダンスデータに応じた映像に基づいて無呼吸を診断する睡眠無呼吸測定装置及びその方法に関し、上氣道と胸部それぞれに着けた電極によるＥＩＴ（Electrical Impedance Tomography）を適用して、上氣道開閉に伴う肺内部の空気分布を映像化して閉塞性無呼吸と中枢性無呼吸及び複合性無呼吸の内、少なくともいずれか一つの無呼吸を診断し、それに伴う治療計画を打ち立てることができる。【線択図】図１
