II. Landmarks
- Chest divided into 8 zones (4 per hemithorax)
- Horizontal lines
- Dividing line (center line)
- Below Nipple line
- Dividing line (center line)
- Vertical lines
- Antero-Medial border
- Parasternal line
- Center line
- Anterior axillary line
- Posterior border
- Posterior axillary line
- Antero-Medial border
III. Technique
- Scan each of 8 zones at the intercostal spaces for B-Lines
IV. Interpretation: Pulmonary Edema
- Positive zone
- Three or more B-Lines identified in a zone (B+ lines)
- Positive Hemithorax
- Two of four zones positive in a hemithorax
- Positive scan
- Both hemithoraxes positive