Research Article
Comprehensive Assessment of Health Impacts from Exposure to Nonionizing Radiation for Healthcare Practitioners Working with MRI and Ultrasound
Table 2
The levels of occupational hazards at the workplaces of ultrasound diagnostics specialists.
| Indicators | Dimension | n | Mean ± m | Min–Max | Standard deviation | TLV | Percentage of exceeding | Mean/TLV |
| The 2nd group—ultrasound diagnostics specialists | Noise | dBA | 18 | 50.1 ± 2.1 | 32.0–63.1 | 8.9 | 50 | 61.1 | 1.0 |
| Ultrasound (kHz) | 12.5 | dB | 18 | 26.8 ± 2.0 | 10.1–41.3 | 8.4 | 80 | 0 | 0.3 | 16 | 18 | 23.7 ± 1.7 | 11.3–40.3 | 7.4 | 90 | 0 | 0.3 | 20 | 18 | 28.6 ± 2.1 | 13.5–50.3 | 8.9 | 100 | 0 | 0.3 | 25 | 18 | 20.1 ± 1.7 | 12.1–32.4 | 7.0 | 105 | 0 | 0.2 | 31.5 | 18 | 17.4 ± 1.2 | 12.9–28.1 | 4.9 | 110 | 0 | 0.1 |
| EMF (50 Hz) | Electric (kV/m) | 18 | 0.5 ± 0.1 | 0.06–1.1 | 0.3 | 0.5 | 50 | 1.1 | Magnetic (A/m) | 18 | 0.8 ± 0.1 | 0.1–2.0 | 0.6 | 4 | 0 | 0.2 |
| CMF | Strength (kА/m) | 18 | 0.18 ± 0.01 | 0.05–0.23 | 0.04 | 8 | 0 | 0.02 | Magnetic induction (mT) | 18 | 0.22 ± 0.01 | 0.06–0.26 | 0.04 | 10 | 0 | 0.02 |
| EMF of RF | Electric field (V/m) | 18 | 1.32 ± 0.15 | 0.05–1.99 | 0.6 | 80 | 0 | 0.02 | Magnetic field (А/m) | 18 | 0.67 ± 0.08 | 0.03–1.32 | 0.35 | 3 | 0 | 0.2 |
| EMF (5–2,000 Hz) | Electric field (V/m) | 18 | 7.30 ± 0.81 | 2.69–13.01 | 3.42 | 25 | 0 | 0.3 | Magnetic field (nT) | 18 | 113.4 ± 17.1 | 0.07–12.3 | 72.5 | 250 | 0 | 0.5 |
| EMF (2–400 kHz) | Electric field (V/m) | 18 | 0.92 ± 0.12 | 0.19–1.66 | 0.51 | 2.5 | 0 | 0.4 | Magnetic field (nT) | 18 | 4.8 ± 1.0 | 0.50–13.8 | 4.2 | 25 | 0 | 0.2 |
| Electrostatic field | kV/m | 18 | 0.27 ± 0.04 | 0.03–0.62 | 0.19 | 20 | 0 | 0.01 |
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