Fig 1.
Intimal calcification in the intracranial internal carotid artery (iICA) on a coronal brain CT image (left) and on a histological slide (right).
On CT a blue circle is placed around the iICA. In histology the intimal calcification area is light blue and the calcification area of the internal elastic lamina indicated by the black line.
Fig 2.
Internal elastic lamina calcification in the intracranial internal carotid artery (iICA) on a coronal brain CT image (left) and on a histological slide (right).
On CT a blue circle is placed around the iICA. Calcification area of the internal elastic lamina is indicated by the black line. Reprinted from A. Vos et al. Stroke. 2016;47:221–223 (Fig 1A) under a CC BY license, with permission of the American Heart Association, original copyright 2016 American Heart Association.
Table 1.
Distribution of calcification dominance per histological slide.
Fig 3.
Intracranial internal carotid artery calcification (iICA) score with Circularity (Dot, <90°, 90–270° and 270–360°); Thickness (Thick ≥ 1.5mm and Thin < 1.5mm) and Morphology (Indistinguishable, Irregular, Continuous).
Calcifications are highlighted (light blue). In these examples all images are in the axial viewing plane except for the <90° and 90–270° images which are in the coronal plane.
Table 2.
Intracranial internal carotid artery calcification score for unenhanced CT.
Table 3.
Performance of the calcification score in the intracranial internal carotid artery.
Table 4.
Reproducibility of the calcification score.