Does Reducing Videofluoroscopy Frame Rate Affect DIGEST Grades in Modified Barium Swallow Studies?
Shitong Mao, Carla L Warneke, Sheila N Buoy and 5 others
PMID 40379841WHAT IT FOUND
Graders reached very similar DIGEST safety and efficiency scores when lower-frame-rate versions of the videos were graded.
The study did not test real lower-radiation imaging, so it does not support a change in standard practice.
Key findings
01In 315 MBS exams from 278 patients, exact agreement for Safety, Efficiency, and DIGEST grades exceeded 85% across 30, 15, and 7.5 FPS comparisons.
02Weighted agreement values for DIGEST grades stayed in the almost perfect range, with values from 0.850 to 0.864.
03After excluding exams graded DIGEST 0 at 30 FPS, agreement remained above 80%, with weighted agreement values from 0.778 to 0.837.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
Read the rest of this summary
You get three full summaries a month, free, and we do not ask for a card. Search, the TL;DRs and your library stay unlimited either way.
What it does not show
Only DIGEST, Safety, and Efficiency were tested; other swallowing measures such as MBSImP were not evaluated. The videos were simulated by removing frames from 30 FPS recordings, not acquired at lower pulse rates, so radiation and image quality differences were not tested. Severe DIGEST grade 4 exams were rare, with only 7 cases, so agreement for the most severe grades is uncertain. Some disagreement may come from human rater variability, not only frame rate. The sample was retrospective and drawn from one cancer centre, and some patients had multiple exams.
Declared interests
The paper states the study was part of a DIGEST dissemination and implementation project with grant number R01CA271223. No other funding or conflict-of-interest declaration is given in the supplied text.
The easy way to misread this
Do not conclude that standard modified barium swallow studies can now be performed at lower frame rates to reduce radiation. The study down-sampled existing videos and did not test real low-pulse-rate imaging or image quality, and the authors state the results do not support a change in frame rate for standard practice.
Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →