Table 1 Association between CTPA and LPBV findings before treatment (segment-based analysis).

From: Association between pre-treatment computed tomography findings and post-treatment persistent decrease in lung perfusion blood volume

Pretreatment CTPA findings

(n = 738)

Pretreatment LPBV findings

Hypoperfused segment

(n = 212)

Preserved segment

(n = 526)

Location of thrombus

 Peripheral group (n = 237)

87 (41.0%)

150 (28.5%)

 Proximal group (n = 501)

125 (59.0%)

376 (71.5%)

Vascular patency

 Occlusive group (n = 183)

127 (59.9%)

56 (10.6%)

 Non-occlusive group (n = 555)

85 (40.1%)

470 (89.4%)

  1. CTPA, computed tomography pulmonary angiography; LPBV, lung perfusion blood volume.
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