Author Interviews, Cost of Health Care, MRI, Radiology / 18.05.2015
Patient Motion During MRI Scanning Can Lead To Significant Added Costs
MedicalResearch.com Interview with:
Jalal B. Andre, MD
Director of Neurological MRI
Harborview Medical Center
Assistant Professor of Radiology
University of Washington
Seattle, WA 98195-7115
Medical Research: What is the background for this study? What are the main findings?
Dr. Andre: Patient motion during clinical magnetic resonance (MR) examinations occurs frequently, can result in artifacts that degrade image quality, and has the potential to mask underlying pathology and affect patient care. Surprisingly, the frequency of motion artifacts in clinical MR examinations has been poorly documented in the literature, as has been the cost associated with obtaining such exams, specifically those that do not meet diagnostic criteria. To better quantify these observations, we performed a retrospective study evaluating the prevalence of motion artifacts during a randomly selected week of clinical MR examinations.
We devised a graded 5-tier scale to quantify patient motion, which incorporated the potential for clinical impact Using this scale, two neuroradiologists performed a consensus evaluation at a picture archiving and communication system station of 192 MR examinations performed during a single calendar week. This evaluation revealed that significant motion artifact (defined as artifact that could impact image interpretation and potentially change diagnosis) was present in 7.5% of outpatient and nearly 30% of inpatient and/or emergency department MR examinations, and that repeated sequences (subcomponents of an MR examination) were present in nearly 20% of completed MR examinations. In addition, we found that the specific imaged body part was less predictive of subsequent patient motion than was patient disposition (if they were imaged as a hospital inpatient and/or emergency department patient). Using a base-case cost estimate derived from fiscal year 2012 outpatient Medicare reimbursement rates and institutional cost estimates, our analysis suggested that a potential cost of $592 per hour could be lost in hospital revenue secondary to patient motion. Extrapolated over a calendar year, the cost of patient motion (as potential forgone institutional revenue) approached $115,000 per scanner per year. (more…)