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A think-aloud study to inform the design of radiograph interpretation practice
Advances in Health Sciences Education ( IF 4 ) Pub Date : 2020-03-05 , DOI: 10.1007/s10459-020-09963-0
Jong-Sung Yoon , Kathy Boutis , Martin R. Pecaric , Nancy R. Fefferman , K. Anders Ericsson , Martin V. Pusic

Models for diagnostic reasoning in radiology have been based on the observed behaviors of experienced radiologists but have not directly focused on the thought processes of novices as they improve their accuracy of image interpretation. By collecting think-aloud verbal reports, the current study was designed to investigate differences in specific thought processes between medical students (novices) as they learn and radiologists (experts), so that we can better design future instructional environments. Seven medical students and four physicians with radiology training were asked to interpret and diagnose pediatric elbow radiographs where fracture is suspected. After reporting their diagnosis of a case, they were given immediate feedback. Participants were asked to verbalize their thoughts while completing the diagnosis and while they reflected on the provided feedback. The protocol analysis of their verbalizations showed that participants used some combination of four processes to interpret the case: gestalt interpretation, purposeful search, rule application, and reasoning from a prior case. All types of processes except reasoning from a prior case were applied significantly more frequently by experts. Further, gestalt interpretation was used with higher frequency in abnormal cases while purposeful search was used more often for normal cases. Our assessment of processes could help guide the design of instructional environments with well-curated image banks and analytics to facilitate the novice’s journey to expertise in image interpretation.

中文翻译:

一项为 X 光片解释实践设计提供信息的深思熟虑的研究

放射学中的诊断推理模型基于经验丰富的放射科医师的观察行为,但并未直接关注新手的思维过程,因为他们提高了图像解释的准确性。通过收集大声思考的口头报告,当前的研究旨在调查医学生(新手)在学习过程中与放射科医生(专家)之间特定思维过程的差异,以便我们可以更好地设计未来的教学环境。七名医学生和四名接受过放射学培训的医生被要求解释和诊断疑似骨折的儿科肘部 X 光片。在报告了他们对病例的诊断后,他们立即得到了反馈。参与者被要求在完成诊断和反思所提供的反馈时表达他们的想法。对他们的语言表达的协议分析表明,参与者使用了四个过程的某种组合来解释案例:格式塔解释、有目的的搜索、规则应用和从先前案例的推理。除了来自先前案例的推理之外,所有类型的过程都被专家更频繁地应用。此外,格式塔解释在异常情况下使用频率更高,而在正常情况下更频繁地使用有目的的搜索。我们对流程的评估可以帮助指导具有精心策划的图像库和分析的教学环境的设计,以促进新手获得图像解释专业知识的旅程。对他们的语言表达的协议分析表明,参与者使用了四个过程的某种组合来解释案例:格式塔解释、有目的的搜索、规则应用和从先前案例的推理。除了来自先前案例的推理之外,所有类型的过程都被专家更频繁地应用。此外,格式塔解释在异常情况下使用的频率更高,而在正常情况下更频繁地使用有目的的搜索。我们对流程的评估可以帮助指导具有精心策划的图像库和分析的教学环境的设计,以促进新手获得图像解释专业知识的旅程。对他们的语言表达的协议分析表明,参与者使用了四个过程的某种组合来解释案例:格式塔解释、有目的的搜索、规则应用和从先前案例的推理。除了来自先前案例的推理之外,所有类型的过程都被专家更频繁地应用。此外,格式塔解释在异常情况下使用频率更高,而在正常情况下更频繁地使用有目的的搜索。我们对流程的评估可以帮助指导具有精心策划的图像库和分析的教学环境的设计,以促进新手获得图像解释专业知识的旅程。规则应用,以及来自先前案例的推理。除了来自先前案例的推理之外,所有类型的过程都被专家更频繁地应用。此外,格式塔解释在异常情况下使用频率更高,而在正常情况下更频繁地使用有目的的搜索。我们对流程的评估可以帮助指导具有精心策划的图像库和分析的教学环境的设计,以促进新手获得图像解释专业知识的旅程。规则应用,以及来自先前案例的推理。除了来自先前案例的推理之外,所有类型的过程都被专家更频繁地应用。此外,格式塔解释在异常情况下使用频率更高,而在正常情况下更频繁地使用有目的的搜索。我们对流程的评估可以帮助指导具有精心策划的图像库和分析的教学环境的设计,以促进新手获得图像解释专业知识的旅程。
更新日期:2020-03-05
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