Three-Dimensional Printed Models in Anatomy Education of the Ventricular System: A Randomized Controlled Study

BACKGROUND: The ventricular system is a set of brain cavities without solid tissues and the basis of surgical brain anatomy. To the best of our knowledge, the effect of using 3-dimensional (3D) printed models (3DPMs) on anatomy education of the ventricular system has not been reported. METHODS: We established 3DPMs for the ventricular system and performed a randomized controlled study to evaluate the educational effect of 3DPMs, 3D images (3DIs), and 2-dimensional images (2DIs). We randomly divided 60 second-year medical students into 3 groups, with 3DPMs, 3DIs, and 2DIs used as teaching aids, 1 for each group. Before and after the anatomy class on the features of ventricular system, all students completed the same test. RESULTS: No statistical significant differences were detected between the mean values of the pretest scores of the 3 groups (P > 0.05). For the post-test scores, the students in the 3DPM and 3DI groups performed significantly better than those in the 2DI group in terms of the practice test score (3DPM group vs. 2DI group, P < 0.001; 3DPM group vs. 2DI group, P = 0.009) and total score (3DPM group vs. 2DI group, P = 0.001; 3DI group vs. 2DI group, P = 0.025). From the students' evaluation results, the 3DPM group performed better than the 3DI group for "enjoyment" and "attitude" (P = 0.039 and P = 0.025, respectively). CONCLUSIONS: Compared with 2DIs, use of 3DPMs and 3DIs could improve the effectiveness of teaching the anatomy of the complex ventricular system. In addition, 3DPMs could markedly increase the interest and enthusiasm of students.