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Health Aff (Millwood). 2008 Nov-Dec;27(6):1491-502. doi: 10.1377/hlthaff.27.6.1491.

Rising use of diagnostic medical imaging in a large integrated health system.

Author information

  • 1Radiology and Biomedical Imaging, University of California, San Francisco, USA. rebecca.smith-bindman@radiology.ucsf.edu

Abstract

Little has been published characterizing specific patterns of the dramatic rise in diagnostic imaging during the past decade. In a large health plan, 377,048 patients underwent 4.9 million diagnostic tests from 1997 through 2006. Cross-sectional imaging nearly doubled over those years, rising from 260 to 478 examinations per thousand enrollees per year. Imaging with computed tomography (CT) doubled, and imaging with magnetic resonance imaging (MRI) tripled. Cross-sectional studies added to existing studies instead of replacing them, and the annual per enrollee cost of radiology imaging more than doubled. The dramatic rise in imaging raises both costs and radiation exposure.

Comment in

  • Some facts on rapid imaging growth. [Health Aff (Millwood). 2009]
PMID:
18997204
[PubMed - indexed for MEDLINE]
PMCID:
PMC2765780
Free PMC Article

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