Table 2.
Arterial depiction on four reconstructed images
| ASIR-V (Reader 1) (Reader 2) |
DLIR-L (Reader 1) (Reader 2) |
DLIR-M (Reader 1) (Reader 2) |
DLIR-H (Reader 1) (Reader 2) |
p value | κ value |
|---|---|---|---|---|---|
| CCA | |||||
| 4.5 ± 0.6 (3–5) | 4.4 ± 0.7 (2–5) | 4.5 ± 0.6 (3–5) | 4.6 ± 0.6 (3–5) | 0.096 | 0.78 |
| 4.4 ± 0.6 (3–5) | 4.4 ± 0.7 (2–5) | 4.4 ± 0.6 (3–5) | 4.5 ± 0.5 (3–5) | 0.072 | |
| ICA | |||||
| 4.4 ± 0.6 (3–5) | 4.4 ± 0.7 (3–5) | 4.4 ± 0.6 (3–5) | 4.4 ± 0.6 (3–5) | 0.261 | 0.75 |
| 4.3 ± 0.7 (3–5) | 4.3 ± 0.6 (3–5) | 4.2 ± 0.6 (3–5) | 4.3 ± 0.6 (3–5) | 0.300 | |
| VA | |||||
| 4.2 ± 0.6 (3–5) | 4.1 ± 0.7 (2–5) | 4.2 ± 0.6 (3–5) | 4.3 ± 0.6 (3–5) | 0.080 | 0.67 |
| 4.2 ± 0.6 (3–5) | 4.0 ± 0.7 (2–5) | 4.1 ± 0.6 (3–5) | 4.2 ± 0.5 (3–5) | 0.181 | |
| BA | |||||
| 4.1 ± 0.5 (3–5) | 4.0 ± 0.6 (3–5) | 4.1 ± 0.5 (3–5) | 4.1 ± 0.5 (3–5) | 0.511 | 0.83 |
| 4.0 ± 0.6 (3–5) | 4.0 ± 0.7 (3–5) | 4.0 ± 0.6 (3–5) | 4.1 ± 0.6 (3–5) | 0.429 | |
| ACA | |||||
| A1–A2 | |||||
| 4.5 ± 0.6 (3–5) | 4.5 ± 0.6 (3–5) | 4.5 ± 0.6 (3–5) | 4.5 ± 0.6 (3–5) | 0.779 | 0.85 |
| 4.4 ± 0.6 (3–5) | 4.5 ± 0.6 (3–5) | 4.5 ± 0.6 (3–5) | 4.5 ± 0.6 (3–5) | 0.724 | |
| A3 | |||||
| 3.3 ± 0.8 (2–4) | 3.3 ± 0.8 (2–4) | 3.4 ± 0.7 (2–4) | 3.5 ± 0.5* (3–4) | 0.002 | 0.60 |
| 3.2 ± 0.6 (2–4) | 3.3 ± 0.6 (2–4) | 3.3 ± 0.6 (2–4) | 3.3 ± 0.5 (2–4) | 0.753 | |
| A4 | |||||
| 2.2 ± 0.7 (1–4) | 2.2 ± 0.7 (1–4) | 2.3 ± 0.8 (1–4) | 2.3 ± 0.9 (1–4) | 0.112 | 0.89 |
| 2.1 ± 0.7 (1–3) | 2.1 ± 0.7 (1–3) | 2.2 ± 0.8 (1–3) | 2.3 ± 0.7 (1–3) | 0.248 | |
| MCA | |||||
| M1–M2 | |||||
| 4.3 ± 0.6 (3–5) | 4.3 ± 0.6 (3–5) | 4.3 ± 0.6 (3–5) | 4.2 ± 0.6 (3–5) | 0.896 | 0.78 |
| 4.3 ± 0.6 (3–5) | 4.3 ± 0.6 (3–5) | 4.3 ± 0.6 (3–5) | 4.3 ± 0.6 (3–5) | 0.494 | |
| M3 | |||||
| 3.6 ± 0.6 (2–5) | 3.6 ± 0.7 (2–5) | 3.6 ± 0.6 (2–5) | 3.6 ± 0.6 (2–5) | 0.261 | 0.84 |
| 3.5 ± 0.6 (2–4) | 3.4 ± 0.6 (2–4) | 3.5 ± 0.6 (2–4) | 3.5 ± 0.6 (2–5) | 0.284 | |
| M4 | |||||
| 3.2 ± 0.7 (2–4) | 3.1 ± 0.8 (1–4) | 3.2 ± 0.7 (1–4) | 3.2 ± 0.8 (1–4) | 0.392 | 0.92 |
| 3.2 ± 0.7 (2–4) | 3.1 ± 0.9 (1–4) | 3.2 ± 0.8 (1–4) | 3.1 ± 0.8 (1–4) | 0.644 | |
| PCA | |||||
| P1–P2 | |||||
| 4.2 ± 0.6 (3–5) | 4.2 ± 0.6 (3–5) | 4.2 ± 0.6 (3–5) | 4.2 ± 0.6 (3–5) | 1.000 | 0.84 |
| 4.3 ± 0.6 (3–5) | 4.3 ± 0.6 (3–5) | 4.3 ± 0.6 (3–5) | 4.3 ± 0.6 (3–5) | 0.392 | |
| P3 | |||||
| 3.1 ± 0.7 (1–4) | 3.1 ± 0.7 (1–4) | 3.1 ± 0.7 (1–4) | 3.2 ± 0.7 (2–4) | 0.332 | 0.86 |
| 3.0 ± 0.6 (1–4) | 3.0 ± 0.7 (1–4) | 3.0 ± 0.6 (1–4) | 3.0 ± 0.7 (1–4) | 0.675 | |
| P4 | |||||
| 2.0 ± 0.7 (1–4) | 2.0 ± 0.7 (1–4) | 2.0 ± 0.7 (1–4) | 2.2 ± 0.7 (1–4) | 0.068 | 0.82 |
| 2.1 ± 0.8 (1–4) | 2.0 ± 0.7 (1–4) | 2.1 ± 0.8 (1–4) | 2.1 ± 0.6 (1–3) | 0.463 | |
*Mean statistical higher than ASIR-V
AA, aortic arch; CCA, common carotid artery; ICA, internal carotid artery; VA, vertebral artery; BA, basilar artery; ACA, anterior cerebral artery; MCA, middle cerebral artery; PCA, posterior cerebral artery. ASIR, adaptive statistical iterative reconstruction-Veo; DLIR, deep learning image reconstruction (low strength, DLIR-L; medium strength, DLIR-M; high strength, DLIR-H)