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. 2023 Apr 18;307(4):e222045. doi: 10.1148/radiol.222045

Figure 3:

Illustrative cases of each preprocedural CSDH maximal thickness group. (A) Noncontrast head CT image (left) shows a maximal hematoma thickness of 9 mm (group 1, <10 mm) in a 77-year-old man who underwent middle meningeal artery embolization (MMAE) concurrently with left-sided craniotomy for hematoma evacuation. Follow-up noncontrast head CT image (right) at 4 months shows complete resolution of the hematoma. (B) Noncontrast head CT image (left) shows a maximal hematoma thickness of 11.6 mm (group 2, 10 mm to <15 mm) in an 80-year-old man who underwent MMAE following recurrence after a prior left-sided burr hole procedure (3 months earlier). Follow-up noncontrast head CT image (right) at 9 weeks shows complete resolution of the CSDH. (C) Noncontrast head CT image (left) shows a maximal hematoma thickness of 16 mm (group 3, 15 mm to <20 mm) in a 68-year-old man who underwent MMAE following recurrence after prior left-sided craniotomy. Follow-up noncontrast head CT image (right) at 6 weeks shows a minimal hematoma thickness of 5 mm and resolution of symptoms. (D) Noncontrast head CT image (left) shows a maximal hematoma thickness of 25 mm (group 4, ≥20 mm) in a 94-year-old man who underwent MMAE following recurrence after prior left-sided craniotomy (2 months earlier). Follow-up noncontrast head CT image (right) at 8 weeks shows near resolution of the right-sided hematoma.

Illustrative cases of each preprocedural CSDH maximal thickness group. (A) Noncontrast head CT image (left) shows a maximal hematoma thickness of 9 mm (group 1, <10 mm) in a 77-year-old man who underwent middle meningeal artery embolization (MMAE) concurrently with left-sided craniotomy for hematoma evacuation. Follow-up noncontrast head CT image (right) at 4 months shows complete resolution of the hematoma. (B) Noncontrast head CT image (left) shows a maximal hematoma thickness of 11.6 mm (group 2, 10 mm to <15 mm) in an 80-year-old man who underwent MMAE following recurrence after a prior left-sided burr hole procedure (3 months earlier). Follow-up noncontrast head CT image (right) at 9 weeks shows complete resolution of the CSDH. (C) Noncontrast head CT image (left) shows a maximal hematoma thickness of 16 mm (group 3, 15 mm to <20 mm) in a 68-year-old man who underwent MMAE following recurrence after prior left-sided craniotomy. Follow-up noncontrast head CT image (right) at 6 weeks shows a minimal hematoma thickness of 5 mm and resolution of symptoms. (D) Noncontrast head CT image (left) shows a maximal hematoma thickness of 25 mm (group 4, ≥20 mm) in a 94-year-old man who underwent MMAE following recurrence after prior left-sided craniotomy (2 months earlier). Follow-up noncontrast head CT image (right) at 8 weeks shows near resolution of the right-sided hematoma.