| 0 |
0=No disease is present. |
|
|
0=No disease is present. |
| 1 |
1=Definitely a potential cause of the index stroke defined as: (a) Patients with any atherosclerotic stenosis 70–99% in an intra-/or extracranial artery supplying the ischemic field diagnosed by level A or B evidence| or (b) Any atherosclerotic stenosis <70% in an intra-/or extracranial artery supplying the ischemic field with attached luminal thrombus diagnosed by level A or B evidence| or (c) A mobile thrombus in the aortic arch| or (d) Occlusion with imaging evidence of atherosclerosis in an intra-/or extracranial artery supplying the ischemic field. |
|
|
1=Definitely a potential cause of the index stroke defined as: (a) Patients with any atherosclerotic stenosis 70–99% in an intra-/or extracranial artery supplying the ischemic field diagnosed by level A or B evidence| or (b) Any atherosclerotic stenosis <70% in an intra-/or extracranial artery supplying the ischemic field with attached luminal thrombus diagnosed by level A or B evidence| or (c) A mobile thrombus in the aortic arch| or (d) Occlusion with imaging evidence of atherosclerosis in an intra-/or extracranial artery supplying the ischemic field. |
| 2 |
2=Causality uncertain: (a) Patients with any atherosclerotic stenosis 70–99% in an intra-/or extracranial artery supplying the ischemic field diagnosed by level C evidence| or (b) Any atherosclerotic stenosis <70% in an intra-/or extracranial artery supplying the ischemic field with attached luminal thrombus diagnosed by level C evidence| or (c) Aortic arch plaques >4 mm in thickness without a mobile component. |
|
|
2=Causality uncertain: (a) Patients with any atherosclerotic stenosis 70–99% in an intra-/or extracranial artery supplying the ischemic field diagnosed by level C evidence| or (b) Any atherosclerotic stenosis <70% in an intra-/or extracranial artery supplying the ischemic field with attached luminal thrombus diagnosed by level C evidence| or (c) Aortic arch plaques >4 mm in thickness without a mobile component. |
| 3 |
3=Unlikely a direct cause of index stroke (but disease is present): (a) Presence of carotid or vertebral artery plaque without stenosis| or (b) Aortic arch plaque <4 mm| or (c) Stenosis (any degree) in a brain artery, contralateral to the brain infarction or in the opposite circulation (either posterior or anterior circulation)| or (d) History of myocardial infarction or coronary revascularization or peripheral arterial disease. |
|
|
3=Unlikely a direct cause of index stroke (but disease is present): (a) Presence of carotid or vertebral artery plaque without stenosis| or (b) Aortic arch plaque <4 mm| or (c) Stenosis (any degree) in a brain artery, contralateral to the brain infarction or in the opposite circulation (either posterior or anterior circulation)| or (d) History of myocardial infarction or coronary revascularization or peripheral arterial disease. |
| 9 |
9=Cannot be graded because no tests were performed. |
|
|
9=Cannot be graded because no tests were performed. |