Table 2 Baseline data and procedure details between 2 groups
Low-dose group (n = 100) | Standard-dose group (n = 100) | P value | |
|---|---|---|---|
Normal data | |||
Age (y) | 63.7 ± 10.5 | 61.1 ± 13.0 | 0.144 |
Gender (male/female) | 68/32 | 62/38 | 0.374 |
Smoking history | 49 | 40 | 0.200 |
Tumor history | 7 | 10 | 0.447 |
BMI (kg/m2) | 23.1 ± 3.6 | 22.8 ± 3.2 | 0.590 |
Imaging findings | |||
Emphysema | 28 | 33 | 0.229 |
Lesion size (mm) | 24.8 ± 4.2 | 23.5 ± 5.0 | 0.045 |
Lung (left/right) | 42/58 | 45/55 | 0.669 |
Lobe (upper/non-upper) | 45/55 | 42/58 | 0.669 |
Biopsy procedure | |||
Lesion-pleura distance (< / ≥ 30 mm) | 85/15 | 75/25 | 0.077 |
Needle-pleura angle (< / ≥ 50 degrees) | 13/87 | 11/89 | 0.663 |
Prone/Supine/Decubitus | 67/30/3 | 54/44/2 | 0.120 |
Number of needle pathways | 1.3 ± 0.7 | 1.3 ± 0.7 | 0.694 |
Number of samples | 3.3 ± 0.5 | 3.3 ± 0.5 | 0.880 |
Duration of procedure (min) | 10.8 ± 4.1 | 11.6 ± 5.3 | 0.231 |
Complications | |||
Pneumothorax (chest tube insertion) | 14 (4) | 13 (3) | 0.836 |
Lung hemorrhage (high-grade hemorrhage) | 24 (14) | 26 (14) | 0.744 |
Radiation dose | |||
DLP (mGy-cm) | 31.5 (Q1: 27.3; Q3: 38.2) | 333.5 (Q1: 273.6; Q3: 407.9) | < 0.001* |