ArticleJournal of magnetic resonance imaging : JMRI2026
Safety of MRI Examinations Under Sedation: A Nationwide Survey in Japan.
Article in Journal of magnetic resonance imaging : JMRI, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- Safety of MRI Examinations Under Sedation: A Nationwide Survey in Japan.Journal of magnetic resonance imaging : JMRI · 2026Article
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundMRI is performed under sedation for patients requiring immobility or for those already sedated for clinical management. Although specialist guidelines advocate for anesthesiologist-led care, non-anesthesiologist-led adult sedation is a common practice worldwide. Furthermore, the increase in risk attributable to sedation has not been quantified. PURPOSE: To investigate MRI sedation practices in Japan to quantify associated risks and to identify key safety vulnerabilities. STUDY TYPE: Survey. SUBJECTS: Data were collected from 549 Japanese medical institutions. ASSESSMENT: A web-based questionnaire was distributed to members of major Japanese radiological societies to assess institutional policies, sedation management practices, safety measures, and historical adverse events. The survey primarily concerned deep sedation and general anesthesia in adults but also encompassed questions on minimal-to-moderate sedation and pediatric sedation. STATISTICAL TESTS: Chi-squared test, Welch's t-test, Fisher's exact test were used. Odds ratios (ORs) were calculated based on the cumulative number of adverse events over 2 years to examine the increased risk from sedation. p < 0.05 was considered significant.
resultsAdult MRI sedation management is typically led by attending physicians (84%) with limited consultation from anesthesiologists for sedation (9.0%) or radiologists for scan indication (5.1%). Safety infrastructure was often inadequate, with MRI-compatible ventilators (48%) or syringe pumps (29%) and capnometers (24%). In an analysis combining both pediatric and adult data, the ORs for the total sedated group versus non-sedated group were 62 (95% confidence interval, 54-73) for peripheral capillary oxygen saturation drop, 48 (32-72) for respiratory arrest, 15 (8.0-28) for cardiac arrest, 6.7 (2.0-23) for physical trauma, and 8.9 (4.0-20) for projectile accidents. DATA
conclusionMRI examinations under sedation are associated with a substantially higher risk of adverse events. Developing and implementing a standardized protocol may mitigate these procedural risks. LEVEL OF EVIDENCE: 4: STAGE OF TECHNICAL EFFICACY: 5.
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