Impact of PACS on Duplicate Imaging Rates
Author Information
Author(s): You John J, Yun Lingsong, Tu Jack V
Primary Institution: McMaster University
Hypothesis
Does the introduction of picture archiving communication systems (PACS) reduce the frequency of duplicate imaging examinations?
Conclusion
The introduction of PACS did not lead to large reductions in duplicate imaging rates, and independent evaluations of such systems are necessary.
Supporting Evidence
- Duplicate imaging was relatively infrequent, with rates of 2.7% within 7 days, 6.7% within 30 days, and 9.8% within 60 days.
- There were small absolute reductions in duplicate X-ray tests after PACS, but increases in duplicate CT scans.
- The study highlights the need for independent evaluations of electronic medical systems.
Takeaway
This study looked at whether a new computer system for storing medical images helps reduce the number of repeat tests. It found that while some tests went down a little, others actually went up.
Methodology
A before-after study using administrative claims data from the Ontario Health Insurance Plan to assess duplicate imaging rates before and after PACS implementation.
Potential Biases
Potential bias due to reliance on administrative data without clinical context.
Limitations
The study could not determine the clinical reasons for duplicate imaging tests, which may have affected the results.
Participant Demographics
Data from 10 hospitals in the Thames Valley region of southwestern Ontario, Canada.
Statistical Information
P-Value
0.01
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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