Calcifications of Vertebrobasilar Arteries on CT: Detailed Distribution and Relation to Risk Factors in 245 Ischemic Stroke Patients
Table 2
Distribution of calcifications by calcification type.
Vessel/type of calcif.
N (%)
Vessel area (mm2)
Focus Nr.
VL
VM
DL
DM
Extension (cont.)
Slice Nr. (median, quintiles)
VAs
236/245 (96.3)
Right V.
155 (63.3)
Focal
141 (91.0)
1 (1-2)
59 (41.2)
56 (39.7)
42 (29.8)
70 (49.6)
73 (51.8)
1 (1-2)
Crescent
47 (30.3)
—
—
—
—
—
42 (89.4)
2 (1-2)
Circular
10 (6.4)
—
—
—
—
—
9 (90.0)
2 (1-2)
Left V.
186 (75.9)
Focal
168 (90.3)
1 (1-2)
79 (47.0)
79 (47.0)
46 (27.4)
84 (50.0)
92 (54.8)
2 (1-2)
Crescent
54 (29.0)
—
—
—
—
—
45 (83.3)
1 (1-2)
Circular
9 (4.8)
—
—
—
—
—
8 (88.9)
2 (1-2)
Basilar
42 (17.1)
RV
RD
LV
LD
Focal
42 (100.0)
1 (1-2)
24 (57.1)
14 (33.3)
15 (35.7)
11 (26.2)
17 (40.5)
1 (1-2)
Crescent
3 (7.1)
—
—
—
—
—
3 (7.1)
2 (1–3)
Circular
0 (0.0)
—
—
—
—
—
—
—
VAs: vertebral arteries; right V.: right vertebral; Left V.: left vertebral; focus Nr.: number of distinct focuses observed; VL: ventrolateral; VM: ventromedial; DL: dorsolateral; DM: dorsomedial; RV: right ventral; RD: right dorsal; LV: left ventral; LD: left dorsal; focal c.: focal calcifications; cont.: continuous extension of calcifications; data are N (per cent), median (quintiles 25%–75%), or mean ± standard deviation (st. dev.).