Lead Placement Frank

**Semantic type:** Classification

**Definition:** An electrocardiogram (ECG) lead placement for determining 3 orthogonal components X (right to left direction), Y (foot to head direction) and Z (back to front direction) of the heart. For this method a minimum of 4 electrodes are needed that represent the right arm, left arm, left leg and back. However, ususally 7 electrodes are used to avoid dependence on the dipole location and facilitate interpretation.

**Synonyms:** - FRANK LEAD SYSTEM - Frank lead system