Radiologic technology

Publisher: American Society of Radiologic Technologists


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  • 5-year impact
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  • Other titles
    Radiologic technology (Online), Radiologic technology
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  • Material type
    Document, Periodical, Internet resource
  • Document type
    Internet Resource, Computer File, Journal / Magazine / Newspaper

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: Purpose To determine how kilovoltage (kV), milliampere seconds (mAs), and focal spot size affect perceptual image quality using a hand phantom. Methods Using computed radiography, 70 images of a posteroanterior (PA) oblique hand phantom were acquired with different kilovoltage and milliampere second values using large and small focal spot sizes. Images were displayed on quality-controlled monitors with dimmed ambient lighting. The look-up table for hand radiography was used for image display. Five diagnostic radiographers scored each image for perceptual image quality against a reference image using a 5-point Likert scale. Results No significant difference in image quality was found between small and large focal spot sizes at different kilovoltage (P = .46) and milliampere second (P = .56) values. As milliampere seconds increase, perceptual image quality increases gradually from 0.4 mAs to 4 mAs, after which perceptual image quality begins to deteriorate. When kilovoltage increases to within the range of 40 kV to 55 kV, perceptual image quality increases; image quality remains stable after 55 kV. Discussion This study shows that both large and small focal spot sizes produce images of similar quality, and a wide range of kilovoltage and milliampere seconds can be used to produce images of acceptable quality. The implications of these findings include the potential for extending the life of radiography equipment and the potential for reducing the dose patients receive during appendicular examinations. Conclusion Large focal spot size can be used for PA oblique hand imaging without affecting perceptual image quality. Perceptual image quality remains acceptable and stable for a wide range of kilovoltage and milliampere second values. Optimization of these technical factors to achieve image quality is critical to avoiding higher radiation doses than necessary.
    Radiologic technology 05/2014; 85(5):479-485.
  • Radiologic technology 01/2013; 84(3):302.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Many advances have been made in the prevention of HIV transmission and management of HIV/AIDS since the virus was discovered in the early 1980s. One of the most important discoveries has been antiretroviral treatment, which can halt the replication of HIV and ease symptoms, turning AIDS into a chronic condition instead of a rapidly terminal illness. Despite advances, HIV remains a major public health challenge. This article reviews the genus, life cycle, and transmission of HIV, as well as workplace issues surrounding the virus and the challenges of developing an HIV vaccine.
    Radiologic technology 01/2013; 84(3):247-67.
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    ABSTRACT: In addition to breast cancer and other conditions limited to the breast, mammograms sometimes reveal signs of systemic disease. These signs include breast arterial calcifications, axillary lymphadenopathy, dilated veins in the breast, breast edema and skin thickening, and masses not associated with cancer or a benign breast condition. This article discusses the indicators of systemic disease seen on mammograms and some of the many diseases they may signify. Several case studies are presented.
    Radiologic technology 01/2013; 84(3):273M-96M.
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    ABSTRACT: The femur is the largest and strongest bone in the human body, and great force is necessary to fracture it. In adults, the most common cause of femur fracture is motor vehicle accidents. In children, abuse is often the cause. And in the elderly, femur fractures most often occur from falling. Radiography is the gold standard for diagnostic imaging of femurs, but diagnosis can be complicated with nondisplaced or occult fractures. Particularly in the emergency setting, modalities such as magnetic resonance imaging or computed tomography may be necessary. Effective treatment of femur fractures is needed to restore homeostatic function and prevent complications.
    Radiologic technology 01/2013; 84(3):273-291.
  • Radiologic technology 01/2013; 84(3):299-300.
  • Radiologic technology 01/2013; 84(3):305-6.
  • Radiologic technology 01/2013; 84(3):307-310.
  • Radiologic technology 01/2013; 84(3):311-6.
  • Radiologic technology 01/2013; 84(3):297-8.
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    ABSTRACT: Objective To discover the status and structure of radiology in Latin America with respect to the health care systems it is part of, the effects of socioeconomics, the equipment and technology used, technologists and their training, accreditation, and professional organizations. Methods Health-related databases and Google Scholar were searched for articles concerning radiology practice in Latin America. Articles were selected based on relevance to the research scope. Discussion Many regions in Latin America offer little to no access to radiology. Where there is access, the equipment often is old or not functioning, with limited and costly service and maintenance. Most trained technologists live in urban areas. There are no standardized accreditation practices in Latin America. However, forming professional organizations would help promote the practice of radiology and accreditation standards. International cooperative organizations enhance radiology by providing resources and opportunities for cooperation between countries. Conclusion The current status of radiology in Latin America must be determined. This knowledge will help us discover opportunities for cooperation and ways to improve radiology practice. The main need in Latin America is to extend coverage to the underserved population.
    Radiologic technology 01/2013; 84(3):228-240.
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    ABSTRACT: Background Aortic coarctation is the most commonly encountered congenital abnormality of the thoracic aorta. In recent years, magnetic resonance (MR) imaging has become the modality of choice for patients suspected of having coarctation. The preferred method for evaluating the aorta is 3-D contrast-enhanced MR angiography (CE-MRA), combined with maximum intensity projections (MIPs). Purpose To contribute to the literature on CE-MRA and to alert readers to the possibility of a postprocessing artifact from an aortic MRA dataset. Results MIP images from a 21-year-old woman showed an apparent stenosis of the upper descending thoracic aorta. The stenosis was believed to be artifactual because it was only visible on the MIP images where the thoracic aorta and left atrium overlay one another. Furthermore, the stenosis disappeared when the heart and pulmonary veins were electronically sculpted from the imaging volume. Conclusion Sculpted removal of the heart and left pulmonary veins can improve the accuracy of the MIP generation process. Physicians should be alerted to the possibility of a postprocessing error when interpreting MRA datasets.
    Radiologic technology 01/2013; 84(3):224-7.
  • Radiologic technology 01/2013; 84(3):301-2.
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    ABSTRACT: Traumatic brain injuries (TBIs) are frequent and potentially devastating, affecting up to 2 million new victims in the United States each year. Two percent of these people experience persisting or lifelong disability. TBI is complex and highly variable in terms of affected neuroanatomy, functional impairment, and radiographic presentation, and it is the leading cause of death and disability in children and young adults. It is increasingly recognized as an important indicator of domestic violence victimization. This article introduces the epidemiology, pathobiology and functional brain anatomy, diagnosis, and assessment of TBI. In addition, the role of computed tomography imaging of TBI is detailed.
    Radiologic technology 01/2013; 84(3):273CT-94CT.
  • Radiologic technology 11/2012; 84(2):127.
  • Radiologic technology 11/2012; 84(2):196-8.
  • Radiologic technology 11/2012; 84(2):199-205.
  • Radiologic technology 11/2012; 84(2):186-7.