Table 5.
Correlation of various parameters with effective dose
| Pearson correlations | Height (cm) | Weight (kg) | Scan range (cm) | Tube current (mA) | CTDIvol (mGy) | DLP (mGy.cm) |
|---|---|---|---|---|---|---|
| Weight (kg) | 0.493 | |||||
| Scan range (cm) | 0.104 | 0.05 | ||||
| Tube current (mA) | −0.065 | 0.056 | 0.818 | |||
| CTDIvol (mGy) | −0.119 | 0.084 | −0.4 | 0.129 | ||
| DLP (mGy.cm) | 0.036 | 0.11 | 0.763 | 0.943 | 0.244 | |
| ED (mSv) | 0.05 | 0.064 | 0.983 | 0.884 | −0.284 | 0.834 |
Scan range, Tube current and DLP are Strongly Positively correlated with ED. Patient’s Height and Weight are Weakly Positively correlated with ED. DLP: Dose-length product, ED: Effective dose