8-4 ECG 
8.4  ECG Review 
When an image is frozen, the ECG waveform will be frozen at the same time. When 
images are reviewed with the ECG electrodes connected, the ECG waveform is the 
reference for time. 
After the images are frozen, all real time images are in the status of linked review. 
The frame position marker indicates the time relationship between the currently reviewed 
2D image and the ECG trace or M/D image.