Research Article
Comprehensive Assessment of Health Impacts from Exposure to Nonionizing Radiation for Healthcare Practitioners Working with MRI and Ultrasound
Table 1
The levels of occupational hazards at the workplaces of MRI specialists.
| Indicators | Dimension | n | Mean ± m | Min–Max | Standard deviation | TLV | Percentage of exceeding | Mean/TLV |
| The 1st group—MRI diagnostics specialists | Noise | dBA | 17 | 48.6 ± 1.5 | 37.0–64.3 | 6.3 | 50 | 35.3 | 1.0 |
| Ultrasound (kHz) | 12.5 | (a) dB | 17 | 24.3 ± 1.3 | 14.9–30.2 | 5.5 | 80 | 0 | 0.3 | 16 | 17 | 19.4 ± 1.6 | 7.3–29.1 | 6.7 | 90 | 0 | 0.2 | 20 | 17 | 13.7 ± 2.4 | 0.0–36.6 | 10.0 | 100 | 0 | 0.1 | 25 | 17 | 10.8 ± 1.9 | 0.0–29.6 | 7.7 | 105 | 0 | 0.1 | 31.5 | 17 | 10.2 ± 1.4 | 0.0–19.5 | 5.8 | 110 | 0 | 0.1 |
| EMF (50 Hz) | Electric (kV/m) | 17 | 0.55 ± 0.1 | 0.08–1.3 | 0.4 | 0.5 | 47.1 | 1.1 | Magnetic (A/m) | 17 | 0.65 ± 0.07 | 0.06–1.2 | 0.3 | 4 | 0 | 0.6 |
| CMF | Strength (kА/m) | 17 | 2.59 ± 1.29 | 0.04–21.30 | 5.31 | 8 | 5.8 | 0.3 | Magnetic induction (mT) | 17 | 3.38 ± 1.69 | 0.05–27.90 | 6.98 | 10 | 5.9 | 0.3 |
| EMF of RF | Electric field (V/m) | 17 | 4.34 ± 1.05 | 1.12–16.87 | 4.32 | 80 | 0 | 0.05 | Magnetic field (А/m) | 17 | 4.02 ± 1.34 | 0.13–16.23 | 5.52 | 3 | 41.2 | 1.3 |
| EMF (5–2,000 Hz) | Electric field (V/m) | 17 | 16.45 ± 5.01 | 5.17–94.10 | 20.66 | 25 | 5.9 | 0.7 | Magnetic field (nT) | 17 | 107.7 ± 10.1 | 0.5–155.9 | 41.7 | 250 | 0 | 0.4 |
| EMF (2–400 kHz) | Electric field (V/m) | 17 | 0.98 ± 0.12 | 0.50–1.92 | 0.48 | 2.5 | 0 | 0.4 | Magnetic field (nT) | 17 | 6.3 ± 0.7 | 1.9–11.5 | 2.8 | 25 | 0 | 0.2 |
| Electrostatic field | kV/m | 17 | 0.20 ± 0.03 | 0.02–0.45 | 0.14 | 20 | 0 | 0.01 |
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