Article Figures & Data
Figures
- Fig 1.
Images in a 67-year-old man with oculomotor nerve palsy.
A, Conventional DW imaging fails to show any significant abnormality.
B, The thin-section DW imaging shows a tiny hyperintense lesion at the left paramedian midbrain (arrow). The TOAST diagnosis was changed from normal to small-vessel disease.
- Fig 2.
Images obtained in a 67-year-old man with aphasia.
A and B, Conventional DW images do not depict any lesions.
C and D, Thin-section DW images depict lesions in the cerebral hemisphere in the middle cerebral artery territory (arrows). The TOAST diagnosis was changed from normal to large-artery atherosclerosis.
- Fig 3.
Images obtained in a 45-year-old woman with atrial fibrillation.
A, Conventional DW imaging shows a hyperintense lesion (arrow) in the left frontal lobe.
B, Thin-section DW imaging does not show this lesion, and the first finding is determined to be an artifact.
Tables
Stroke Mechanism No. of Patients (%) Large-artery atherosclerosis 26 (53) Cardiogenic embolism 3 (5) Small-artery occlusion 15 (31) Other determined etiology 5 (10) Patient/Sex/Age (y) Findings Clinical Presentation Conventional DWI Thin-Section DWI Cardiac 1/M/80 Facial paralysis Normal Lateral medullary syndrome None 2/F/78 L facial numbness Normal Lacunar None 3/M/59 R hemiplegia Normal Lacunar None 4/M/70 Transient ischemic attack Normal Lacunar None 5/M/75 Asthenia Normal Lacunar None 6/M/67 Oculomotor nerve palsy Normal Lacunar None 7/M/67 Aphasia Normal Large-artery sclerosis None 8/M/68 Dizziness Large-artery sclerosis Cardiogenic embolism Coronary disease 9/F/77 R hemiplegia Large-artery sclerosis Cardiogenic embolism Atrial fibrillation 10/M/73 Aphasia Lacunar Cardiogenic embolism Atrial fibrillation 11/M/83 L hemiplegia Lacunar Branch atheromatous disease None
