Occupational EMF exposure from radar at X and Ku frequency band and plasma catecholamine levels
Workers in certain occupations such as the military may be exposed to technical radiofrequency radiation exposure above current limits, which may pose a health risk. The present investigation intended to find the effect of chronic electromagnetic field (EMF) exposure from radar on plasma catecholamines in the military workforce. In the study, 166 male personnel selected randomly were categorized into three groups: control (n = 68), exposure group‐I (X‐band, 8–12 GHz, n = 40), and exposure group‐II (Ku‐band, 12.5–18 GHz, n = 58). The three clusters were further divided into two groups according t...
Source: Bioelectromagnetics - April 1, 2015 Category: Radiology Authors: Sarika Singh, Neeru Kapoor Tags: Research Article Source Type: research
In vitro exposure: Linear and non‐linear thermodynamic events in Petri dishes
We conducted an electromagnetic‐thermal analysis of Petri dishes filled with different medium volumes under different radio frequency exposure conditions with the aim of identifying linear and non‐linear parameters that might explain contradictory results of many in vitro bioelectromagnetic experiments. We found that power loss density and temperature depend on shape, size, and orientation of the exposed sample with respect to direction of incident energy, showing that the liquid medium acts as a receiving antenna. In addition, we investigated the possibility of convection from thermodynamic principles within the liqui...
Source: Bioelectromagnetics - April 1, 2015 Category: Radiology Authors: Alessandra Paffi, Micaela Liberti, Francesca Apollonio, Asher Sheppard, Quirino Balzano Tags: Research Article Source Type: research
Effect of low frequency transcutaneous magnetic stimulation on sensory and motor transmission
Peripheral nerve injury diminishes fast conducting large myelinated afferent fibers transmission but enhances smaller pain transmitting fibers firing. This aberrant afferent neuronal behavior contributes to development of chronic post‐traumatic peripheral neuropathic pain (PTP‐NP). Non‐invasive dynamic magnetic flux stimulation has been implicated in treating PTP‐NP, a condition currently not adequately addressed by other therapies including transcutaneous electrical nerve stimulation (TENS). The current study assessed the effect of low frequency transcutaneous magnetic stimulation (LFTMS) on peripheral sensory thr...
Source: Bioelectromagnetics - April 1, 2015 Category: Radiology Authors: Albert Leung, Shivshil Shukla, Jacquelyn Lee, Valerie Metzger‐Smith, Yifan He, Jeffrey Chen, Shahrokh Golshan Tags: Research Article Source Type: research
Investigation of effects of short‐term exposure to 50 HZ magnetic field on central, peripheral, and autonomic nervous systems in rats
Although a large number of exposure studies have been carried out to investigate possible detrimental effects of a power‐line frequency magnetic field (PF‐MF; 50–60 Hz) on living organisms, there is no consensus in reported results. Recent research suggested that short‐term exposure to a 50 Hz PF‐MF can have a greater effect than long‐term exposure. In our study, we aimed to investigate the possible effect of short‐term 50 Hz PF‐MF exposure on central, peripheral, and autonomic nervous systems through electroencephalogram (EEG), nerve conduction velocity (NCV), and heart rate variability (HRV) measure...
Source: Bioelectromagnetics - April 1, 2015 Category: Radiology Authors: Onur Elmas, Selcuk Comlekci Tags: Research Article Source Type: research
Rapid method for thermal dose‐based safety supervision during MR scans
To maximize diagnostic accuracy and minimize costs, magnetic resonance imaging (MRI) scanners expose patients to electromagnetic exposure levels well above the established maximum, but in a well‐controlled environment. In this paper, we discuss a novel safety assessment model that offers maximum flexibility while ensuring no local tissue damage due to radiofrequency induced heating occurs. This model is based on the cumulative equivalent minutes at 43 °C (CEM43) thermal dose concept, which naturally considers exposure duration, tissue sensitivity and the transient nature of heating, and permits rapid assessment of exp...
Source: Bioelectromagnetics - April 1, 2015 Category: Radiology Authors: Esra Neufeld, Maximilian Fuetterer, Manuel Murbach, Niels Kuster Tags: Research Article Source Type: research
