WHO classified electromagnetic wave of mobile phone as carcinogen of grade 2B in 2011 and in line with this world-wide trend, our country is also doing its effect in order to segment its measurement, arouse public attention to such electromagnetic wave and to provide human protection standard by re...
WHO classified electromagnetic wave of mobile phone as carcinogen of grade 2B in 2011 and in line with this world-wide trend, our country is also doing its effect in order to segment its measurement, arouse public attention to such electromagnetic wave and to provide human protection standard by revising electromagnetic wave act. Owing to development of medical technology, it is a general tendency that intensity of magnetic field being used for MRI is also being diversified and increased from 0.2(Tesla) at an early stage to 10(Tesla) at present. Along with this trend, concern over its stability is being increased accordingly. However, as stability of electromagnetic wave in MRI system that uses high magnetic field 0.2-10 (Tesla) and high frequency (Radio frequency of 108-1010 Hz) has not been so much popularized as that of mobile phone and has not been frequently exposed, its general concern is rather low in reality . And so, in case of MRI being used clinically, as it is exposed to high magnetic field, an extensive research on its human impact is required. Under this background,Specific Absorption Rate Levels in the DICOM Files of MRI of domestic hospitals that use high magnetic field 0.2-10(Tesla) system and RF(108-1010 Hz) was analyzed and whether it is properly used in compliance with electromagnetic wave standard at home and abroad and any harmful properties being discovered by comparing with mobile phone is present was considered. A global trend of the high intensity magnetic field MRI has increased interest in safety problems to patient and the public people. The analysis results of SAR Levels in the DICOM Files information extracted from 10 domestic hospitals, showed that the electromagnetic wave intensity of MRI pulse sequence of 1.5T TOF MRA and brain ,spine , knee spin echo and 3.0T TOF MRA and brain, spine, knee spin echo exceeded that of mobile devices. In case of MRI being used in the hospitals at present, its SAR is sporadically higher than that of mobile phone but it does not exceed the limit of IEC regulation for medical device In the future. systematic study should be done on the high intensity magnetic field and high-frequency electromagnetic waves in MRI equipment. It is considered that electromagnetic wave examination method and its quantitative analysis for MRI equipment using high magnetic field and frequency are required to be performed and its guideline is required to be presented in the future.
It is a reality that in the preceding studies, harmful property of electromagnetic wave was reported and owing to development of medical technology, magnetic field intensity of MRI and its performance of using electromagnetic wave is being increased. Taking a relation between magnetic field intensity of 1.5-3.0T being commonly used clinically and SAR as an example, magnetic field intensity is 2 times but SAR value shows difference of 4 times . It is expected that impact of electronic wave thereby would be increased but so far, examination method and quantitative analysis method for electronic wave impact of MRI have not been established in our country. Furthermore, just uncertainty is being increased as an education for employees and ordinary people has not been performed as well.
It is considered that electronic wave examination method and its quantitative analysis for MRI equipment using high magnetic field and frequency are required to be performed and its guideline is required to be presented in the future.
WHO classified electromagnetic wave of mobile phone as carcinogen of grade 2B in 2011 and in line with this world-wide trend, our country is also doing its effect in order to segment its measurement, arouse public attention to such electromagnetic wave and to provide human protection standard by revising electromagnetic wave act. Owing to development of medical technology, it is a general tendency that intensity of magnetic field being used for MRI is also being diversified and increased from 0.2(Tesla) at an early stage to 10(Tesla) at present. Along with this trend, concern over its stability is being increased accordingly. However, as stability of electromagnetic wave in MRI system that uses high magnetic field 0.2-10 (Tesla) and high frequency (Radio frequency of 108-1010 Hz) has not been so much popularized as that of mobile phone and has not been frequently exposed, its general concern is rather low in reality . And so, in case of MRI being used clinically, as it is exposed to high magnetic field, an extensive research on its human impact is required. Under this background,Specific Absorption Rate Levels in the DICOM Files of MRI of domestic hospitals that use high magnetic field 0.2-10(Tesla) system and RF(108-1010 Hz) was analyzed and whether it is properly used in compliance with electromagnetic wave standard at home and abroad and any harmful properties being discovered by comparing with mobile phone is present was considered. A global trend of the high intensity magnetic field MRI has increased interest in safety problems to patient and the public people. The analysis results of SAR Levels in the DICOM Files information extracted from 10 domestic hospitals, showed that the electromagnetic wave intensity of MRI pulse sequence of 1.5T TOF MRA and brain ,spine , knee spin echo and 3.0T TOF MRA and brain, spine, knee spin echo exceeded that of mobile devices. In case of MRI being used in the hospitals at present, its SAR is sporadically higher than that of mobile phone but it does not exceed the limit of IEC regulation for medical device In the future. systematic study should be done on the high intensity magnetic field and high-frequency electromagnetic waves in MRI equipment. It is considered that electromagnetic wave examination method and its quantitative analysis for MRI equipment using high magnetic field and frequency are required to be performed and its guideline is required to be presented in the future.
It is a reality that in the preceding studies, harmful property of electromagnetic wave was reported and owing to development of medical technology, magnetic field intensity of MRI and its performance of using electromagnetic wave is being increased. Taking a relation between magnetic field intensity of 1.5-3.0T being commonly used clinically and SAR as an example, magnetic field intensity is 2 times but SAR value shows difference of 4 times . It is expected that impact of electronic wave thereby would be increased but so far, examination method and quantitative analysis method for electronic wave impact of MRI have not been established in our country. Furthermore, just uncertainty is being increased as an education for employees and ordinary people has not been performed as well.
It is considered that electronic wave examination method and its quantitative analysis for MRI equipment using high magnetic field and frequency are required to be performed and its guideline is required to be presented in the future.
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