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Conventional and CT angiography in children: dosimetry and dose comparisons

By Donald P. Frush and Terry Yoshizumi

Abstract

Tremendous advances have been made in imaging in children with both congenital and acquired heart disease. These include technical advances in cardiac catheterization and conventional angiography, especially with advancements in interventional procedures, as well as noninvasive imaging with MR and CT angiography. With rapid advances in multidetector CT (MDCT) technology, most recently 64-detector array systems (64-slice MDCT), have come a number of advantages over MR. However, both conventional and CT angiography impart radiation dose to children. Although the presence of radiation exposure to children has long been recognized, it is apparent that our ability to assess this dose, particularly in light of the rapid advancements, has been limited. Traditional methods of dosimetry for both conventional and CT angiography are somewhat cumbersome or involve a potential for substantial uncertainty. Recent developments in dosimetry, including metal oxide semiconductor field effect transistors (MOSFET) and the availability of anthropomorphic, tissue-equivalent phantoms have provided new opportunities for dosimetric assessments. Recent work with this technology in state-of-the-art cardiac angiography suites as well as with MDCT have offered direct comparisons of doses in infants and children undergoing diagnostic cardiac evaluation. It is with these dose data that assessment of risks, and ultimately the assessment of risk-benefit, can be better achieved

Topics: Alara
Publisher: Springer-Verlag
OAI identifier: oai:pubmedcentral.nih.gov:2663638
Provided by: PubMed Central
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    Citations

    1. (2001). Skin injuries from fluoroscopically-guided procedures.
    2. (2004). Computed tomography. Advance for Imaging and Oncology Administrators 14:13–20
    3. (2001). Estimated risks of radiation-induced fatal cancer from pediatric CT.
    4. (2001). Helical CT of the body: are settings adjusted for pediatric patients?
    5. (2001). Minimizing radiation dose for pediatric body applications of single-detector helical CT: strategies at a large children’s hospital.
    6. Health and Human Services (2006) 11th report on carcinogens.
    7. (2006). Health risks from exposure to low levels of ionizing radiation:
    8. (2006). American Academy of Pediatrics clinical report: radiation risk to children from CT imaging. Pediatrics
    9. (2006). Interventional fluoroscopy: reducing radiation risks for patients and staff.
    10. (2003). Pediatric multidetector body CT.
    11. (2006). The Oprah Winfrey Show
    12. (2005). Letter to the editor: is it time to retire the CTDI for CT quality assurance and dose optimization?
    13. (2004). Computed tomography and radiation: understanding the issues.
    14. (1999). Estimating the effective dose to children undergoing heart investigations – a phantom study.
    15. (2000). Conversion factors for the estimation of effective dose in paediatric cardiac angiography.
    16. (2005). Quantifying and minimizing radiation exposure during pediatric cardiac catheterization.
    17. (2005). Patient-specific dose and radiation risk estimation in pediatric cardiac catheterization.
    18. (2003). Monte Carlo calculations for assessment of radiation does to patients with congenital heart defects and to staff during cardiac catheterizations.
    19. (2000). Effective doses to patients from paediatric cardiac catheterization.
    20. (1997). Radiation exposure to children during cardiac catheterization.

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