title: No effects of MRI scan on male reproduction hormones.
abstract: Magnetic resonance imaging (MRI) is increasing around the world and the possible adverse effects on reproductive health of electromagnetic fields (EMFs) in MRI are not previously studied. A prospective randomized balanced cross-over study using a head scan in real MRI with whole-body transmitting coil and sham MRI among 24 healthy male volunteers was conducted. Serum-blood samples of inhibin B, testosterone, prolactine, thyreotropine, luteinizing hormone, follicle stimulating hormone, sex-hormone binding globuline and estradiol were taken before and after the different scans. Neither immediately after, nor after 11 days were there seen any differences in the hormone levels comparing real and sham MRI. The lack of effects of EMF on male reproductive hormones should be reassuring to the public and especially for men examined in MRI. Adverse effects on other endpoints than male reproduction or possible chronic effect of multiple MRI scans have not been investigated in this study.
authors.affiliation: Occupational and Environmental Medicine, Department of Public Health and Primary Health Care, Faculty of Medicine and Dentistry, University of Bergen, Bergen, Norway. Ole.Mollerlokken@isf.uib.no
authors.forename: Ole J
authors.initials: OJ
authors.lastname: Møllerløkken
authors.forename: Bente E
authors.initials: BE
authors.lastname: Moen
authors.forename: Valborg
authors.initials: V
authors.lastname: Baste
authors.forename: Nils
authors.initials: N
authors.lastname: Magerøy
authors.forename: Gunnhild
authors.initials: G
authors.lastname: Oftedal
authors.forename: Emanuel
authors.initials: E
authors.lastname: Neto
authors.forename: Lars
authors.initials: L
authors.lastname: Ersland
authors.forename: Line
authors.initials: L
authors.lastname: Bjørge
authors.forename: Peter A
authors.initials: PA
authors.lastname: Torjesen
authors.forename: Kjell Hansson
authors.initials: KH
authors.lastname: Mild
mesh_terms: D000328:Adult; D018592:Cross-Over Studies; D006728:Hormones / Q000097:blood*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D012098:Reproduction; D055815:Young Adult
chemical_list: D006728:Hormones