Three-Dimensional-Printed Liver Model Helps Learners Identify Hepatic Subsegments: A Randomized-Controlled Cross-Over Trial.

Chedid, Victor G; Kamath, Amika A; M Knudsen, John; Frimannsdottir, Katrin; Yost, Kathleen J; R Geske, Jennifer; Morris, Jonathan M; Taner, Timucin et al. · Am J Gastroenterol · 2020

rct · Level II

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Abstract

The purpose of this study was to find out whether 3-dimensional (3D)-printed models improved the learners' ability to identify liver segments. A total of 116 physicians from 3 disciplines were tested in a cross-over trial at baseline and after teaching with 3D models and 2-dimensional (2D) images. Adjusted multilevel-mixed models were used to compare scores at baseline and after 3D and 2D. Accuracy in identifying hepatic segments was higher with 3D first than 2D (77% vs 69%; P = 0.05) and not significantly improved by a combination of 3D and 2D. Increased confidence in segment identification was highest in trainees after 3D (P = 0.04). 3D-printed models facilitate learning hepatic segmental anatomy.

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