© The Institution of Engineering and Technology
Also according to the recent Directive by the European Parliament and the Council of the European Union, there is a need for a simple but reliable device to measure exposure to the magnetic field (MF) of magnetic resonance (MR) workers, especially given the continuing development of scanner using a higher static MF. Here the authors describe a novel device for assessing personal exposure to the MF. The time recording system can measure the static MF value at which the operator is exposed to and the field gradients due to his/her movements in the MR environment. The device does not require any cable for data management and transmission and it is able to record the instantaneous and cumulative exposition dose. The device can be used in all MR environments, for clinical or industrial applications.
References
-
-
1)
-
18. Malcovati, P., Maloberti, F.: ‘An integrated microsystem for 3-D magnetic field measurements’, Trans. Instrum. Meas., 2000, 49, (2), pp. 341–345 (doi: 10.1109/19.843075).
-
2)
-
10. ICNIRP: ‘Guidelines for limiting exposure to time-varying electric and magnetic fields (1 Hz to 100 kHz)’, Health Phys., 2010, 99, (6), pp. 818–836.
-
3)
-
12. EU: ‘Directive 2013/35/EU of the European Parliament and of the council of 26 June 2013 on the minimum health and safety requirements regarding the exposure of workers to the risks arising from physical agents (electromagnetic fields)’, 2013.
-
4)
-
13. Tecnorad: ‘Talete-Tecnorad personal dosimetry service’. .
-
5)
-
21. Hartwig, V., Giovannetti, G., Virgili, G., et al: ‘Dispositivo portatile per la misurazione dell'esposizione ai campi elettromagnetici prodotti da una apparecchiatura di risonanza magnetica’. , 12 October 2017.
-
6)
-
11. ICNIRP: ‘Guidelines on limits of exposure to static magnetic fields’, Health Phys., 2009, 96, (1), pp. 504–514.
-
7)
-
14. Te.Si.A.: ‘Mafiss-Te.Si.A. TEcnologie e SInergie Applicate Srl’. .
-
8)
-
9. ICNIRP: ‘Guidelines for limiting exposure to electric fields induced by and by time-varying magnetic fields below 1 Hz’, Health Phys., 2014, 106, (3), pp. 418–425 (doi: 10.1097/HP.0b013e31829e5580).
-
9)
-
6. Wilén, J., Vocht, F.D.: ‘Health complaints among nurses working near MRI scanners – a descriptive pilot study’, Eur. J. Radiol., 2011, 80, pp. 510–513 (doi: 10.1016/j.ejrad.2010.09.021).
-
10)
-
17. De Vocht, F., Muller, F., Engels, H., et al: ‘Personal exposure to static and time-varying magnetic fields during MRI system test procedures’, J. Magn. Reson. Imaging, 2009, 30, pp. 1223–1228 (doi: 10.1002/jmri.21952).
-
11)
-
4. Schaap, K., Portengen, L., Kromhout, H.: ‘Exposure to MRI-related magnetic fields and vertigo in MRI workers’, Occup. Environ. Med., 2016, 73, (3), pp. 161–166 (doi: 10.1136/oemed-2015-103019).
-
12)
-
19. Groebner, J., Umathum, R., Bock, M., et al: ‘MR safety: simultaneous B0, df/dt, and dB/dt measurements on MR-workers up to 7 T’, MAGMA, 2011, 24, pp. 315–322 (doi: 10.1007/s10334-011-0270-y).
-
13)
-
7. Bongers, S., Slottje, P., Portengen, L., et al: ‘Exposure to static magnetic fields and risk of accidents among a cohort of workers from a medical imaging device manufacturing facility’, Magn. Reson. Med., 2016, 75, (5), pp. 2165–2174 (doi: 10.1002/mrm.25768).
-
14)
-
5. De Vocht, F., Batistatou, E., Mölter, A., et al: ‘Transient health symptoms of MRI staff working with 1.5 and 3.0 Tesla scanners in the UK’, Eur. Radiol., 2015, 25, (9), pp. 2718–2726 (doi: 10.1007/s00330-015-3629-z).
-
15)
-
3. Schaap, K., Christopher-De Vries, Y., Cambron-Goulet, É., et al: ‘Work-related factors associated with occupational exposure to static magnetic stray fields from MRI scanners’, Magn. Reson. Med., 2016, 75, (5), pp. 2141–2155 (doi: 10.1002/mrm.25720).
-
16)
-
2. Schaap, K., Christopher-de Vries, Y., Mason, C.K., et al: ‘Occupational exposure of healthcare and research staff to static magnetic stray fields from 1.5–7 Tesla MRI scanners is associated with reporting of transient symptoms’, Occup. Environ. Med., 2014, 71, (6), pp. 423–429 (doi: 10.1136/oemed-2013-101890).
-
17)
-
1. Acri, G., Inferrera, P., Denaro, L., et al: ‘Db/dt evaluation in MRI sites: is ICNIRP threshold limit (for workers) exceeded?’, Int. J. Environ. Res. Public Health, 2018, 15, (7), pp. 1–13 (doi: 10.3390/ijerph15071298).
-
18)
-
8. Bongers, S., Slottje, P., Kromhout, H.: ‘Development of hypertension after long-term exposure to static magnetic fields among workers from a magnetic resonance imaging device manufacturing facility’, Environ. Res., 2018, 164, (December 2017), pp. 565–573 (doi: 10.1016/j.envres.2018.03.008).
-
19)
-
16. Crozier, S., Wilson, S.J., Gregg, I.: ‘US7936168B2 magnetic field dosimeter’, 2011.
-
20)
-
15. Fuentes, M.A., Trakic, A., Wilson, S.J., et al: ‘Analysis and measurements of magnetic field exposures for healthcare workers in selected MR environments’, Trans. Biomed. Eng., 2008, 55, pp. 1355–1364 (doi: 10.1109/TBME.2007.913410).
-
21)
-
20. Hartwig, V., Virgili, G., Ferrante Vero, L.F., et al: ‘Towards a personalised and interactive assessment of occupational exposure to magnetic field during daily routine in magnetic resonance’, Radiat. Prot. Dosimetry, 2018, (July), pp. 1–9.
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