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Related Experiment Video

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Mixed Reality Assisted Radical Endoscopic Thyroidectomy

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The effect of a CT and MR preauthorization program on ED utilization.

Peter B Smulowitz¹, Long Ngo, Stephen K Epstein

¹Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, MA 02215, USA. psmulowi@bidmc.harvard.edu

The American Journal of Emergency Medicine

|March 31, 2009

Summary

A new preauthorization process for outpatient radiology studies significantly increased MRI utilization in emergency departments, but not CT scans. This may lead to more outpatient MRI visits.

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Area of Science:

Radiology
Health Services Research
Emergency Medicine

Background:

Outpatient preauthorization for radiologic studies is increasingly common.
Understanding its impact on emergency department (ED) utilization is crucial.

Purpose of the Study:

To assess the association between an outpatient preauthorization process and ED CT and MRI utilization rates.

Main Methods:

Retrospective study at an urban tertiary teaching hospital.
Analyzed nonadmitted ED patients undergoing CT or MRI.
Used multiple regression to adjust for seasonal/monthly variations.

Main Results:

Preauthorization was required for the study group; not for the control group.
Both groups showed increased CT/MRI use over time.
A statistically significant increase in MRI utilization was observed in the study group.

Conclusions:

Telephone preauthorization significantly altered MRI ordering rates, but not CT.
The process may contribute to increased ED visits for outpatient MRI scans.