Guidelines for Classification of Stress-Only Images
| Finding | ||
|---|---|---|
| Region of heart | Men | Women |
| Apex | Small and sharp perfusion defect (<50%) or perfusion defect large enough to be seen in several slices and < 60% | Small and sharp perfusion defect (<50%) or perfusion defect large enough to be seen in several slices and < 60% |
| Anterior wall | Perfusion defect < 75% | Perfusion defect < 65% in 12 o'clock position or < 60% in 11 o'clock position |
| Lateral-basal wall | Perfusion defect < 65% | Perfusion defect < 65% |
| Inferior wall | Perfusion defect < 60% | Perfusion defect < 60% |
| Septum | ||
| If maximum intensity in left ventricle is in... | ||
| Septum | Always | Count levels in other areas are < 65% |
| Lateral wall | Perfusion defect < 65% | Perfusion defect < 65% |
Rest study should be performed if 1 or more of criteria in table are met. Count levels in table are expressed as percentage of maximal counts per pixel of left ventricle.