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Preoperative CT-Angiogram. CT: computed tomography, CTA: computed tomographic angiography, PComm: posterior communicating artery. (a) Axial CTA displaying right PComm aneurysm (white arrow). (b) Sagittal CTA image displaying right PComm aneurysm arising from supraclinoid internal carotid artery (white arrow). (c) Coronal CTA image displaying the right PComm aneurysm (white arrow).
