Table 1 Baseline characteristics and procedure details of the two groups.
From: Spectral shaping technology reduces the radiation dose of CT-guided lung tumor microwave ablation
Characteristics | Experimental group (n = 57) | Control group (n = 57) | p value |
|---|---|---|---|
Sex (male/female) | 27/30 | 24/33 | |
Age, years | 64.87 ± 9.79 | 66.11 ± 9.41 | 0.50 |
Body mass index, kg/m2 | 23.40 ± 2.76 | 23.03 ± 3.06 | 0.50 |
Lesion size, cm | 1.92 ± 0.99 | 1.94 ± 0.90 | 0.90 |
Lesion location, n (%) | |||
Upper and middle lobes | 45 (78.95) | 39 (68.42) | 0.97 |
Lower lobe | 12 (21.05) | 18 (31.58) | |
Lesion density | |||
Ground-glass | 12 (21.05) | 11 (19.30) | 1.00 |
Mixed | 9 (15.79) | 9 (15.79) | |
Solid | 36 (63.16) | 37 (64.91) | |
Lesion pathology | |||
Squamous | 8 (14.04) | 7 (12.28) | 0.80 |
Adenocarcinoma | 37 (64.91) | 35 (61.40) | |
Metastatic | 12 (21.05) | 15 (26.32) | |
Patient position | |||
Supine | 37 (64.91) | 20 (35.09) | < 0.005 |
Prone | 11 (19.30) | 16 (28.07) | |
Decubitus | 9 (15.79) | 21 (36.84) | |
Hand position | |||
Hands up | 23 (40.35) | 34 (59.65) | 0.10 |
Hands down | 21 (36.84) | 16 (28.07) | |
One hand up, one hand down | 13 (22.81) | 7 (12.28) | |
Lesion-to-pleural surface distance, cm | 0.87 ± 0.98 | 1.05 ± 1.05 | 0.33 |
Lesion-to-vessel surface distance, cm | 2.43 ± 1.83 | 2.45 ± 1.91 | 0.95 |
Procedure time*, min | 31.96 ± 5.94 | 31.12 ± 6.52 | 0.47 |
Number of repeat localized scans | 4.07 (2–8) | 4.00 (2–7) | 0.91 |
Technical success | 100% (57/57) | 100%(57/57) | 1.0 |
Technique efficacy | 100% (57/57) | 98.2(56/57) | 1.0 |
