Table 4. Comparison of Subjective Index Score (Median, n = 24).
kVp | Severity of Metal Artifacts | Homogeneity of Muscle | Visibility of Inter-Muscular Space | Definition of Bony Structures | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Non-O-MAR | O-MAR | P | Non-O-MAR | O-MAR | P | Non-O-MAR | O-MAR | P | Non-O-MAR | O-MAR | P | |
140 | 3 | 5 | < 0.001 | 1 | 4 | < 0.001 | 1.5 | 4 | 0.001 | 3 | 5 | < 0.001 |
120 | 2 | 4 | < 0.001 | 1 | 3 | < 0.001 | 1.5 | 3.5 | 0.001 | 3 | 4 | < 0.001 |
100 | 2 | 3 | < 0.001 | 1 | 3 | < 0.001 | 1 | 3 | < 0.001 | 2 | 4 | < 0.001 |
80 | 1 | 3 | < 0.001 | 1 | 3 | < 0.001 | 1 | 3 | < 0.001 | 2 | 3 | < 0.001 |
O-MAR = orthopedic metal artifact reduction