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Abstract
BackgroundThis prospective study investigated whether the use of 3D-printed model facilitates novice learning of radiology anatomy on multiplanar computed tomography (CT) when compared to traditional 2D-based learning tools. Specifically, whether the use of a 3D printed model improved interpretation of multiplanar CT tracheobronchial anatomy.MethodsThirty-one medical students (10F, 21 M) from years one to three were recruited, matched for gender and level of training and randomized to 2D or 3D group. Students underwent 20-min self-study session using 2D-printed image or 3D-printed model of the tracheobronchial tree. Immediately after, students answered 10 multiple-choice questions (Test 1) to identify tracheobronchial tree branches on multiplanar CT images. Two weeks later, identical test (Test 2) was used to assess retention of information. Mean scores of 2D and 3D groups were calculated. Student’s t test was used to compare mean differences in tests scores and analysis of variance (ANOVA) was used to assess the interaction of gender, CT imaging plane and time on test scores between the two groups.ResultsFor test 1, 2D group had higher mean score than 3D group although not statistically significant (7.69 and 7.43, p = 0.39). Mean scores for Test 2 were significantly lower than for Test 1 (7 and 7.57, p = 0.03) with mean score decline for 2D group (Test 1 = 7.69, Test 2 = 6.63, p = 0.03), and similar score for 3D group (Test 1 and 2 = 7.43). There was no statistically significant interaction of gender and test score over time. Significant interaction between group and time of test was found for axial CT images but not for coronal images.ConclusionsUse of a 3D-printed model of the tracheobronchial anatomy had no immediate advantage over traditional 2D-printed images for learning CT anatomy. However, use of a 3D model improved students’ ability to retain learned information, irrespective of gender.
Highlights
Knowledge of human anatomy is essential in Medicine and a crucial part of medical training
The goal of this study was to investigate whether the use of 3D printed model facilitates novice learning of radiology anatomy on multiplanar computed tomography (CT) when compared to traditional 2Dbased learning tools
The 31 students participating in Test 1 were comprised of 10 female participants, five randomized to the 2D and five to the 3D group
Summary
Knowledge of human anatomy is essential in Medicine and a crucial part of medical training. Previous research comparing the performance of 3D-printed models with other educational tools, such as cadaveric training and textbook images have shown positive results including a faster and more encompassing understanding of the human anatomy [2, 5, 6]. Research has demonstrated that when using 3D printed models, most trainees focus mainly in the antero-posterior orientation, likely reflecting the better familiarity with coronal images commonly used in traditional learning materials such as textbooks [8, 9]. This prospective study investigated whether the use of 3D-printed model facilitates novice learning of radiology anatomy on multiplanar computed tomography (CT) when compared to traditional 2D-based learning tools. Whether the use of a 3D printed model improved interpretation of multiplanar CT tracheobronchial anatomy
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