Lower extremity MRI: are their requests always appropriate in France?
摘要
The primary aim is to assess current lower extremity MRI requests’ relevance with a secondary focus on the knee.
Materials and methodsUsing data from the National Health Data System (SNDS), we conducted an observational study of adults (18+) who underwent lower extremity MRI between July 1 and December 31, 2021. This study included analyzing medical consultations and imaging procedures (particularly X-rays) in the 6 months before and after the index MRI, as well as medical procedures and hospitalizations related to knee procedures within 6 months post-MRI.
ResultsDuring the study period, 779,721 adults underwent lower extremity MRI, marking a 76% increase compared to a previous study conducted in 2012. General practitioners requested MRI in 70.5% of cases, often as the primary imaging modality. Notably, 52.1% of patients had not undergone lower extremity X-rays in the 6 months preceding MRI, and 13% underwent at least two MRI examinations within a year. Focusing on the knee, most patients (80%) did not undergo any outpatient medical procedure or hospitalization involving the knee within the 6 months post MRI.
ConclusionIn France, lower extremity MRI, particularly knee MRI, is frequently used as a first-line imaging procedure, unlike what is recommended.
Key Points