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Healing of a low-grade injury in a polytrauma patient. (a) Oblique sagittal MIP image from CT angiography shows a focal intramural hematoma in the right cervical ICA (arrow) causing 25%–50% narrowing, representing a grade II injury. (b) Oblique sagittal MIP image from follow-up CT angiography obtained after 3 months of antiplatelet therapy demonstrates near-complete healing of the grade II injury in the cervical ICA (arrow).
