ArticleObesity surgery2026
Gastric Volumetric Filling Capacity Before and After Sleeve Gastrectomy: a Magnetic Resonance Imaging and Biomechanical Study.
Article in Obesity surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
12 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionThe stomach exhibits substantial expansion capacity to accommodate food ingestion, yet regional deformation profiles (fundus, corpus, antrum) remain poorly characterised. Laparoscopic sleeve gastrectomy (LSG) drastically reduces anatomical gastric volume, but its impact on accommodation capacity and the underlying mechanical determinants are unknown. This study investigated the correlation between regional gastric tissue mechanics and MRI-measured volumetric changes before and after LSG.
methodsIn a prospective, single-centre study, nine patients with severe obesity (preoperative BMI 42.2 ± 4.1 kg/m²) underwent MRI-based gastric volumetry empty/full (ad libitum, up to 500mL) before and 1–2 months after LSG. Resected fundus and corpus tissue samples were subjected to biaxial tensile testing to quantify passive mechanical properties. Correlations between regional tissue stretch capacity and volumetric expansion were analysed.
resultsAfter water ingestion, preoperative volume increased from 203 ± 68 cm³ (empty) to 604 ± 141 cm³ (full). Tissue mechanical extensibility was greater (Sign test, p = 0.02) in the fundus (2.67 ± 0.84) than corpus (2.23 ± 0.31). Fundus extensibility strongly correlated with regional volume accommodation (ρ = 0.77, p = 0.015). Post-LSG, sleeve volumes decreased to 73 ± 18 cm³ (empty) and 120 ± 44 cm³ (full), representing 64% and 80% reductions respectively. Volume loss predominantly affected the fundus. Postoperatively, no correlation was found between tissue mechanics and gastric expansion.
conclusionPre-LSG, fundic tissue compliance appears to be a primary driver of gastric accommodation capacity. LSG reduces anatomical volume by two-thirds and functional capacity by three-quarters, with early postoperative expansion in this cohort appearing independent of intrinsic tissue mechanical properties. These findings should be confirmed in larger, multicentre cohorts.
Indexed as
Identifiers
41920458What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.