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electrocardiogram; ECG; EKG
健康診断で心電図の検査を受けた。
I had an ECG test during my health checkup.
心電図に異常は見られなかった。
No abnormalities were found on the ECG.
心電図のデータをもとに医師が診断を下した。
The doctor made a diagnosis based on the ECG data.