Center for Research on Utilization of Imaging Services, Department of Radiology, Thomas Jefferson University Hospital and Jefferson Medical College, Philadelphia, Pennsylvania 19107, USA.
J Am Coll Radiol. 2013 Aug;10(8):599-602. doi: 10.1016/j.jacr.2013.01.023. Epub 2013 Mar 29.
Diagnostic imaging services have been repeatedly targeted as a source of excess health care expenditure. In particular, MRI is considered a high-tech and high-cost imaging service that saw rapid increases in utilization in the early 2000s. However, the most recent trends in the utilization of MR are not known. The aim of this study was to quantify trends in MR utilization overall and by body system from 1998 to 2010 in the Medicare population.
Medicare Part B data sets were obtained for 1998 to 2010 for all MR examinations performed in the Medicare population. Using Current Procedural Terminology codes, the total volume and utilization rates of all MR examinations were tabulated for each year of the study period. MR volume was then categorized by body system.
The utilization rate of MR examinations in the Medicare population was 73 per 1,000 beneficiaries in 1998, increased to a peak of 189 in 2008, and decreased to 183 in 2010. The compound annual growth rate from 1998 to 2008 was 10%. The utilization rate in 2010 represents a decrease of 3.1% from the 2009 utilization rate. The most frequently imaged body section in every year was the head, which accounted for 2,404,250 examinations in 2010, 37.3% of all MR examinations in that year.
The overall MRI utilization rate sharply increased from 1998 until 2008 but then decreased in each of the next 2 years. A similar trend was noted for MR examinations performed in most body sections. These trends are likely to be the result of a number of possible causative factors.
诊断成像服务一直是医疗保健支出过高的目标。特别是 MRI 被认为是一种高科技、高成本的成像服务，在 21 世纪初利用率迅速上升。然而，目前还不知道 MRI 利用的最新趋势。本研究的目的是量化 1998 年至 2010 年期间 Medicare 人群中 MRI 总体利用情况和各系统的利用趋势。
获取了 Medicare 人群在 1998 年至 2010 年期间进行的所有 MRI 检查的 Medicare 部分 B 数据集。使用当前程序术语 (Current Procedural Terminology) 代码，每年列出研究期间所有 MRI 检查的总量和利用率。然后按身体系统对 MRI 量进行分类。
1998 年 Medicare 人群中 MRI 检查的利用率为每 1000 名受惠者 73 次，在 2008 年达到 189 次的峰值，然后在 2010 年下降到 183 次。1998 年至 2008 年的复合年增长率为 10%。2010 年的利用率比 2009 年的利用率下降了 3.1%。每年最常成像的身体部位是头部，2010 年共进行了 2404250 次检查，占当年所有 MRI 检查的 37.3%。
MRI 的总体利用率从 1998 年到 2008 年急剧上升，但随后在接下来的两年中每年都有所下降。大多数身体部位的 MRI 检查也出现了类似的趋势。这些趋势可能是多种可能的原因造成的。
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