Cine-MRI of Deglutition: A Systematic Review

Videofluoroscopy, recognized as the gold standard for dysphagia exploration, has inherent limitations, including poor soft tissue discrimination, radiation exposure, and aspiration risk. In response to these challenges, cine-MRI of swallowing has evolved over the past three decades, yielding diverse methodologies and results across various studies.This systematic review, conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, meticulously outlines cine-MRI protocols, applications, advantages, and limitations. Our qualitative analysis encompasses 36 studies involving 715 subjects from 2001 to 2023. Cine-MRI, a promising alternative, provides safe application for dysphagic patients, offering insights into the intricacies of deglutition mechanisms and eliminating the necessity for oral contrast material. Notably, this approach is adaptable to both 1.5 and 3T MRI scanners with specific image acceleration protocols.Despite these merits, a crucial gap remains, as no non-inferiority prospective study has yet been conducted to compare cine-MRI with the gold standard. Additionally, the lack of uniform swallowing assessment criteria and the uncertain impact of the supine position underscore the need for further investigation. In conclusion, while cine-MRI of deglutition emerges as a compelling tool for dysphagia exploration, its precise indications and role in the diagnostic approach to swallowing disorders necessitate comprehensive evaluation in future studies.