Figure 2: Imaging of the second patient with acute subdural hematoma. (a) Initial (left) versus nine days later (right) prior to initiation of systemic heparin therapy (symptomatic right internal carotid artery occlusion secondary to atrial fibrillation); both demonstrating a stable left hemispheric acute subdural hematoma with maximum diameter of 0.9 cm in the temporal lobe with no midline shift, (b) Head computed tomographytwo days following systemic heparin initiation (left) versus five days after heparin initiation; the subdural hematoma has expanded to 2.4 cm maximum diameter with 1.4 cm of midline shift