منابع مشابه
Medical imaging modalities: Prevention of unnecessary orders and non-optimized radiation exposure
Magnetic resonance imaging (MRI) uses a constant magnetic field and radio waves, a non-invasive method for examining tissues, organs and the skeletal system. Advantages and disadvantages of MRI are not fully understood; however, it has been commonly used in the diagnosis of skeleton and bone diseases (such as disk and spinal disorders, joint disorders (arthritis), bone tumours and tissues...
متن کاملExposure to low-dose ionizing radiation from medical imaging procedures.
BACKGROUND The growing use of imaging procedures in the United States has raised concerns about exposure to low-dose ionizing radiation in the general population. METHODS We identified 952,420 nonelderly adults (between 18 and 64 years of age) in five health care markets across the United States between January 1, 2005, and December 31, 2007. Utilization data were used to estimate cumulative ...
متن کاملRadiation exposure from medical imaging: time to regulate?
THE AVERAGE RADIATION DOSE TO WHICH PERSONS IN the United States are exposed has doubled over the past 30 years. Although the average dose from natural background sources has not changed, the average radiation dose from medical imaging has increased more than 6-fold. Medical imaging now contributes about 50% of the overall radiation dose to the US population, compared with about 15% in 1980. Th...
متن کاملRadiation exposure from medical imaging: a silent harm?
considerable impact on medical practice over the past few decades. Regrettably, many such procedures expose patients to ionizing radiation, which may result in injury. Survey data show that physicians generally underestimate the magnitude of radiation doses and their associated effects, and thus underestimate the risk to patients undergoing medical imaging procedures. This view may be due to bo...
متن کاملRadiation Protection in Medical Imaging
The radiation spectrum includes forms of radiation that carry various energy levels. Radiation forms, such as x-radiation, which carry sufficient energy to overcome binding energies of electrons and to eject them from their atomic orbits, can cause the formation of ions in the matter through which they travel, and are termed ionizing radiation. Ionizing radiation may also dissociate molecular b...
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ژورنال
عنوان ژورنال: JACC: Cardiovascular Imaging
سال: 2015
ISSN: 1936-878X
DOI: 10.1016/j.jcmg.2015.09.002