نتایج جستجو برای: nonionizing radiation

تعداد نتایج: 238378  

Journal: :Hong Kong medical journal = Xianggang yi xue za zhi 1999
D SC Lam W Cheuk A TS Leung D SP Fan H M Cheng S J Chew

OBJECTIVE: To examine the scientific data in the literature regarding eye problems and possible damage during the use of computer video display terminals. DATA SOURCES: Medline and non-Medline literature search and personal experience. STUDY SELECTION: Studies that provided evidence-based information about eye damage and eye care during the use of video display terminals were selected. DATA EXT...

Journal: :Current Oncology 2006
J. Seuntjens

Medical physics can be generally defined as a field in which applied physics techniques are used in medicine. Traditionally, medical physics deals chiefly with the use of ionizing or non-ionizing radiation in the diagnosis and treatment of disease. In radiation therapy, ionizing radiation is used to treat a wide variety of cancers through external-beam radiotherapy or brachytherapy. Medical phy...

Journal: :Asian Pacific journal of cancer prevention : APJCP 2012
Balasubramanian Balamuralikrishnan Vellingiri Balachandar Shanmugam Suresh Kumar Nattan Stalin Prakash Varsha Subramaniam Mohana Devi Meyyazhagan Arun Pappuswamy Manikantan Chinnakulandhai Venkatesan Keshavarao Sasikala Shahnaz N Dharwadkar

Extremely low frequency electro magnetic fields (EMFs) have been classified as possibly carcinogenic to humans by the International Agency for Research on Cancer. An increased number of chromosomal alterations in peripheral lymphocytes are correlated with elevated incidence of cancer. The aim of the present study was to assess occupationally induced chromosomal damage in EMF workers exposed to ...

2016
Vedpal Singh Irraivan Elamvazuthi Varun Jeoti John George Akshya Swain Dileep Kumar

BACKGROUND Anterior talofibular ligament (ATFL) is considered as the weakest ankle ligament that is most prone to injuries. Ultrasound imaging with its portable, non-invasive and non-ionizing radiation nature is increasingly being used for ATFL diagnosis. However, diagnosis of ATFL injuries requires its segmentation from ultrasound images that is a challenging task due to the existence of homog...

Journal: :Journal of neurosurgery 2012
Yueh-Ying Han Oren Berkowitz Evelyn Talbott Douglas Kondziolka Maryann Donovan L Dade Lunsford

OBJECT The authors evaluated the potential role of environmental risk factors, including exposure to diagnostic or therapeutic radiation and to wireless phones that emit nonionizing radiation, in the etiology of vestibular schwannoma (VS). METHODS A total of 343 patients with VSs who underwent Gamma Knife surgery performed between 1997 and 2007 were age and sex matched to 343 control patients...

2012
Anne Klomp Jordi L. Tremoleda Anouk Schrantee Willy Gsell Liesbeth Reneman

Pharmacological MRI (phMRI) is a new and promising method to study the effects of substances on brain function that can ultimately be used to unravel underlying neurobiological mechanisms behind drug action and neurotransmitter-related disorders, such as depression and ADHD. Like most of the imaging methods (PET, SPECT, CT) it represents a progress in the investigation of brain disorders and th...

2017
Ghazal Mortazavi S A R Mortazavi S M J Mortazavi

We have read with interest the article by Lu et al. entitled "Association of excessive mobile phone use during pregnancy with birth weight: an adjunct study in Kumamoto of Japan Environment and Children's Study" published recently in the Environmental Health and Preventive Medicine. Although this paper addresses a very challenging issue, it has some shortcomings. Mortazavi et al. have previousl...

2011
A. A. Ayeni K. T. Braimoh O. B. Ayeni

Concern about human exposure to radiofrequency (RF) is not new. The conveniences and satisfaction derived in the use of GSM mobile phone is being threatened by claims of adverse effects on human health by radiation coming from this device. This radiation belongs to the type called non-ionizing radiation the health hazard of which remains debatable. Research has not been carried out on possible ...

Journal: :Cadernos de saude publica 2009
Daniele Maria Pelissari Flávio Eitor Barbieri Victor Wünsch Filho

Leukemia incidence in children has increased worldwide in recent decades, particularly due to the rise in acute lymphoblastic leukemia. Studies have associated exposure to non-ionizing radiation generated by low frequency magnetic fields with childhood leukemia. The current article reviews the case-control studies published on this subject. Of 152 articles tracked in different databases, ten st...

Journal: :Environmental Health Perspectives 1997
Michael Kundi

doi: 10.1289/ehp.10217 In their otherwise informative and concise review of the current state of evidence concerning risk factors for acute childhood leukemia, Belson et al. (2007) did not correctly address nonionizing radiation and, in particular, power frequency magnetic fields as a possible risk factor for childhood leukemia. This failure may be due to a widespread misconception about the ev...

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