Skip to main content

Table 2 Distribution of patients according to HRCT findings, CTPA data, and artificial intelligence CT opacity score

From: COVID-19-induced vascular angiopathy: CTPA signs in critically ill patients other than acute pulmonary embolism and high-lung opacity scores

HRCT findings CTPAa data Artificial intelligence CT opacity score:
Lobar involvement Pulmonary embolism Right upper lobar
- Single 3 (4.1%) Present or absent - Mean 2.2
- Multiple 70 (95.9%) - Present 24 (32.9%) - SDa 1.22323
Zonal distribution - Absent 49 (67.1%) Right middle lobar
- Diffuse 50 (68.5%) Location - Mean 2.3235294
- Basal 19 (26%) - Main 1/24 (4.1%) - SD 1.63062.
- Upper 4 (5.5%) - Lobar 7/24 (29.1%) Right lower lobar
Parenchymal changes - Segmental 17/24 (70.5%) - Mean 3.2909091
- GGO 67 (91.8%) - Sub-segmental 21/24 (87.5%) - SD 0.9138
- Crazy-paving 44 (60.3%) Laterality Left upper lobar
- Consolidations 62 (84.9%) - Unilateral 8/24 (33.3%) - Mean 2.2727273
- Cysts 6 (8.2%) - Bilateral 16/24 (66.7%) - SD 1.27609
Pleural findings Pulmonary HTN Left lower lobar
- Pleural effusion 6 (8.2%) - Positive 14/73 (19.2%) - Mean 3.0363636
Mediastinal findings Pulmonary infarcts - SD 1.29495
- Enlarged lymph nodes 19 (26%) - Positive 3/73 (4.1%) Total CT opacity score (20p)
- Pneumo-mediastinum: 1 (1.4%) Vascular dilatation 1–5/20 4 (5.5%)
   - Inside (and/or) outside 57/73 (78.1%) 6–10/20 14 (19.2%)
   a High TOSa (46-81%), a low TOS (11–19%) 11–15/20 28 (38.4%)
   - Inside (+) outside 40/73 (54.8%) 16–20/20 27 (37%)
   a High TOS (33–72%), a low TOS (7–18%)   
   - Pleural extension 45/73 (61.6%)   
   a High TOS (40–89%), a low TOS (5–11%)   
   Vascular “tree in bud”   
   - Positive 10/73 (13.7%)   
  1. a CTPA CT pulmonary angiography, TOS total opacity score, SD standard deviation