Table 4 Correlation Analysis – Body Diameter/Radiation Dose (the asterisk* marked part should be evaluated with caution because of low patient count)
Patients | CTDIvol (mGy) | Total mAs | Body Diam. sag | Body diam. Transv. | Spearman correlation coefficient (rho) – lateral diameter/CTDIvol | Spearman correlation coefficient (rho) – transverse diameter/CTDIvol | ||
|---|---|---|---|---|---|---|---|---|
Group 1 | Patients 100 kV | 30 | 8.9 (5.8–14.6) | 217 (179–355) | 32.5 (27.1–41.2) | 21.2 (14.9–30.4) | 0.80 | 0.89 |
Patients 120 kV | 16 | 10.8 (7.1–17.4) | 213 (152–257) | 34.1 (27.9–45.8) | 24.4 (16.7–35.1) | 0.81 | 0.83 | |
Patients 140 kV | 4 | 20.9 (20.1–22.8) | 218 (204–232) | 43.8 (39.8–48.4) | 29.5 (24.7–31.5) | 0.65* | 0.32* | |
Group 2 | Patients 90 kV | 19 | 4.8 (3.9–9.8) | 165.0 (134.0–338.0) | 34.5 (31.9–39.0) | 20.4 (18.2–24.3) | 0.71 | 0.43 |
Patients 100 kV | 23 | 6.3 (5.3–9.0) | 156.0 (130.0–224.0) | 38.0 (32.3–44.1) | 21.6 (12.2–27.3) | 0.68 | 0.71 | |
Patients 110 kV | 3 | 9.7 (6.6–14.1) | 185.0 (125.0–270.0) | 40.4 (30.7–47.4) | 22.7 (17.6–33.0) | 1.0 * | 1.0 * | |
Patients 120 kV | 4 | 11.5 (7.8–14.4) | 171.0 (106.0–189.0) | 37.8 (33.4–41.4) | 23.1 (18.9–28.0) | 0.2 * | 1.0 * | |
Patients 150 kV | 1 | 22.01 | 192.0 | 42.2 | 28.7 | N/A | N/A |