| Literature DB >> 33465814 |
Katerina Bogomolova1,2, Amir H Sam3, Adam T Misky4, Chinmay M Gupte3,4, Paul H Strutton5, Thomas J Hurkxkens6, Beerend P Hierck2,7,8.
Abstract
In anatomical education three-dimensional (3D) visualization technology allows for active and stereoscopic exploration of anatomy and can easily be adopted into medical curricula along with traditional 3D teaching methods. However, most often knowledge is still assessed with two-dimensional (2D) paper-and-pencil tests. To address the growing misalignment between learning and assessment, this viewpoint commentary highlights the development of a virtual 3D assessment scenario and perspectives from students and teachers on the use of this assessment tool: a 10-minute session of anatomical knowledge assessment with real-time interaction between assessor and examinee, both wearing a HoloLens and sharing the same stereoscopic 3D augmented reality model. Additionally, recommendations for future directions, including implementation, validation, logistic challenges, and cost-effectiveness, are provided. Continued collaboration between developers, researchers, teachers, and students is critical to advancing these processes.Entities:
Keywords: augmented reality; formative assessment; gross anatomy education; stereoscopic three-dimensional visualization technology; summative assessment; undergraduate education; virtual reality
Year: 2021 PMID: 33465814 PMCID: PMC8252734 DOI: 10.1002/ase.2055
Source DB: PubMed Journal: Anat Sci Educ ISSN: 1935-9772 Impact factor: 5.958
Figure 1Schematic representation of the design‐based research approach. Multiple iterative cycles of design, implementation, evaluation, and redesign took place to finalize the virtual three‐dimensional (3D) assessment. The three lines (red, yellow, and blue) represent the development trajectory of the anatomy test, augmented reality application, and 3D assessment scenario. All three components were designed, implemented, and evaluated simultaneously.
Figure 2A screenshot of augmented reality (AR) application from the user's point of view before the official start of the assessment.
Figure 3Schematic representation of the assessment scenario. Three individuals wearing HoloLenses were participating in the assessment. The assessor and examinee (black) both shared a stereoscopic view (double dashed line) of the holographic three‐dimensional (3D) model of the lower leg including user interface. A passive observer (gray), also wearing a HoloLens, shared the same view but monoscopically (single dashed line) and recorded the session on video. All devices were synchronized through a local Wi‐Fi network, and all devices stored a logfile with timed registrations of operations and confirmed answers.
Personal Experience with the Virtual Three‐Dimensional (3D) Assessment Scenario
| Statement | Undergraduate students (n = 4) mean (±SD) | Postgraduate students (n = 6) mean (±SD) | Experts (n = 6) mean (±SD) |
|---|---|---|---|
| I enjoyed this assessment method | 1.25 (±0.50) | 1.17 (±0.41) | 1.75 (±0.96) |
| I enjoyed the interaction with the examiner | 1.50 (±0.58) | 1.17 (±0.41) | 1.00 (±0.00) |
| I could demonstrate my knowledge effectively | 2.0 (±0.82) | 1.50 (±0.55) | 1.33 (±0.52) |
| I prefer 3D assessment with HoloLens over paper‐based assessment I have previously experienced | 1.75 (±0.96) | 1.17 (±0.41) | 1.67 (±0.82) |
| Certain anatomical aspects can be assessed in 3D, but not in 2D | 2.75 (±1.71) | 1.17 (±0.41) | 1.5 (±0.55) |
| I prefer 3D assessment with HoloLens over 3D assessment on a cadaver | 2.00 (±0.00) | 1.67 (±0.52) | 2.33 (±0.82) |
| Certain anatomical aspects can be assessed in 3D with HoloLens, but not on a cadaver | 2.0 (±1.41) | 2.17 (±0.98) | 1.5 (±0.55) |
| I prefer 3D assessment with HoloLens over 3D assessment on a prosection | 2.25 (±0.96) | 1.50 (±0.55) | 2.33 (±0.52) |
| Certain anatomical aspects can be assessed in 3D with HoloLens, but not on a prosection | 3.00 (±1.15) | 2.50 (±1.38) | 1.6 (±0.55) |
| I feel more confident about my anatomical competences after a HoloLens examination (compared to paper‐based examination) | 1.75 (±0.50) | 1.33 (±0.52) | 1.75 (±0.5) |
| I would study differently knowing that I will be assessed with the HoloLens | 1.50 (±1.00) | 2.17 (±1.33) | 2.5 (±1.38) |
Response options on a five‐point Likert scale ranged from 1 = strongly agree to 5 = strongly disagree. Average scores are expressed in means (± SD).
Feedback Regarding Practical Use of the Application and Device
| Statement | Undergraduate students (n = 4) mean (±SD) | Postgraduate students (n = 6) mean (±SD) | Experts (n = 6) mean (±SD) |
|---|---|---|---|
| The quality of the holographic model was adequate | 1.75 (±0.96) | 1.33 (±0.52) | 1.67 (±0.52) |
| The application was easy to use | 2.50 (±1.73) | 2.17 (±1.33) | 2.0 (±0.63) |
| I experienced discomfort wearing the HoloLens | 3.0 (±1.83) | 3.83 (±1.47) | 4.0 (±1.26) |
| The HoloLens hindered me in giving the answers to the questions | 4.0 (±1.41) | 4.4 (±1.34) | 4.33 (±1.21) |
Response options on a five‐point Likert scale ranged from 1 = strongly agree to 5 = strongly disagree. Average scores are expressed in means (± SD).
Summary of Themes and Subthemes form Thematic Analysis of Participants' Feedback with Quotes Evidencing and Highlighting the Subthemes
| Themes/Subthemes | Students quotes |
|---|---|
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| |
| Usefulness |
“A potentially very useful way of understanding” “Can see its real practical use and a good ease of learning” “Extremely useful! Can't wait till it becomes more commercial” “Good for formative assessment with library based HoloLens” “Has potential, especially in small cohorts. Logistics need to be addressed” |
| Effectiveness |
“Good for allowing a variety of questions on a single specimen” “Easy to test multiple aspects of anatomy quickly with easy switching between questions” “Allows mixture of functional and gross anatomical questions” |
| Enjoyment |
“Interactive and enjoying” “Fun. Didn't smell like cadaver” “An interesting and potentially very rewarding experience” “I am very pleased with this kind of assessment in the future” |
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| Novelty |
“Novel and engaging” “Really cool way of assessing” “I liked the novelty of it” “Very innovative and useful way to view anatomy” |
| Three‐dimensional (3D) Visualization |
“I liked the 3 dimensions offered by the glasses and app” “I like the interactivity aspect and the fact that the anatomy was easy to visualize, something which is lacking through 2D textbook teaching and revision at the moment” “For me the depth perspective is very important. This is not possible from books” |
| Virtual Dissection |
“Easy separation of structures and reset in space for learning is possible in HoloLens but not on a cadaver” “Virtual dissection is possible. Also the multiple viewing angles are easier compared to Cadaver” “Deep structures in particular are more accessible” “I liked being able to add/remove layers and highlight whole muscles” |
| Dynamic Exploration |
“Liked being able to walk around object freely” “How you could move around and see it in different angles was great” “Overall it was easy to use, being able to walk around the limb was useful as it re‐created the experience of a real limb exam” |
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| Practical Issues |
“Clean interface, easy to strip items and look from multiple angles” “Very clear and easy to me. Sometimes frustrating (couldn't click on nerves)” “It was difficult to highlight smaller landmarks (nerves/blood vessels) compare to larger ones (muscles/bones)” |
| Technical Issues |
“Overall positive. More experience with software would improve process” “Crashed during assessment ‐ might affect confidence in exam” “I think in concept HoloLens would be useful in ensuring sound anatomical, knowledge, however, at the moment the technical difficulties and the anxieties these would induce in an exam are not favorable” |
Figure 4Schematic map of themes and subthemes from thematic analysis of participants' feedback on the novel three‐dimensional (3D) anatomy assessment.