基于知识转化模型的心脏磁共振技术扫描教学方法研究
孙峥 , 胡莹莹 , 吴芳 , 赵丽 , 苏壮志 , 杜祥颖 , 卢洁
中国医学教育技术 ›› 2024, Vol. 38 ›› Issue (6) : 814 -820.
基于知识转化模型的心脏磁共振技术扫描教学方法研究
Research on the teaching method of cardiac magnetic resonance scanning technology based on knowledge transformation model
目的 探讨基于知识转化模型在心脏磁共振扫描技术教学方法中的应用效果。 方法 选取首都医科大学宣武医院2020 — 2022级医学影像技术专业64名本专科生作为研究对象,将每一学年的学生随机分为试验组(n=33)和对照组(n=31)。对照组实施传统教学方法,试验组实施知识转化模型教学方法。比较两组学生的学习成绩、学习时长,以及对教学质量的自评和带教教师的教学评价。 结果 试验组在心肌组织特征识别上的学习时长低于对照组[(2.2±0.1) h vs. (2.5±0.2) h,t=2.958,P=0.001];试验组各项测试成绩得分均高于对照组,即扫描定位[(8.9±0.5)分 vs. (8.6±0.4)分]、心脏结构与解剖标注[(9.2±0.9)分 vs.(8.2±1.2)分]、CMR后处理评分[(8.6±0.9)分 vs. (7.7±1.2)分]、整体流程把控[(9.1±1.5)分 vs. (6.9±1.3)分]、心肌组织特征识别[(8.9±2.1)分vs.(8.4±1.8)分],均P<0.05;试验组在扫描定位和整体流程把控上的学时比低于对照组,即扫描定位[(5.4±0.1)分/h vs. (5.9±0.1)分/h]、整体流程把控[(8.3±1.0)分/h vs.(13.0±1.3)分/h],均P<0.05;而试验组在CMR后处理和心肌组织特征识别上高于对照组,即CMR后处理 [(3.9±0.6)分/h vs. (3.5±0.7)分/h]、心肌组织特征识别[(4.0±0.6)分/h vs.(3.4±0.4)分/h],均P<0.05。试验组在CMR技术感兴趣程度[(9.3±0.5)分vs.( 8.2±0.3)分]、独立操作全部CMR扫描流程[(8.5±0.4)分 vs.(7.9±0.3)分]、阅读CMR领域前沿文献[(9.1±0.6)分 vs. (7.2±0.5)分]、提升学习效率[(8.6±0.6)分 vs. (8.2±0.6)分],以及对教学模式满意程度[(9.5±0.7)分vs.(9.2±0.5)分]的学生自评分结果高于对照组,均P<0.05;同时,试验组在带教教师评价环节中的8项指标得分高于对照组,即对CMR技术扫描学习热情 [(8.5±0.6)分vs. (7.7±0.4)分]、自主学习积极性 [(8.0±0.5)分vs. ( 7.2±0.4)分]、掌握CMR操作基本原理和相关理论[(7.5±0.3)分vs.(6.5±0.7)分]、分析CMR扫描策略的能力[(8.2±0.4)分 vs. (6.0±0.5)分]、理解CMR技术前沿文献[(8.1±0.9)分vs.(7.5±0.6)分]、主动关注CMR领域高水平技术进展[(7.7±0.5)分vs. (5.0±0.2)分]、给予专业且系统的指导[(8.9±0.6)分 vs.(8.5±0.6)分]、对现阶段CMR 教学模式非常满意[(8.2±0.7)分vs. (8.0±0.4)分],均P<0.05。 结论 知识转化型模型教学法可激发学生自主学习的能动性,与传统教学模式相互补充,适度交叉,可凝练出最佳教学策略。
Objective To explore the application effect of knowledge transformation model in the teaching method of cardiac magnetic resonance scanning technology. Methods A total of 64 undergraduate and junior college students majoring in Medical Imaging Technology from Xuanwu Hospital of Capital Medical University from the class of 2020 to 2022 were selected as the research subjects. Students of each grade were randomly divided into the experimental group (n=33) and the control group (n=31). The control group implemented the traditional teaching method, while the experimental group used knowledge transformation model teaching method. The academic performance, learning time, self-evaluation of teaching quality and teaching evaluation of the teachers of the two groups were compared. Results The learning time of the experimental group in myocardial tissue feature recognition was shorter than that of the control group [(2.2±0.1) h vs. (2.5±0.2) h, t=2.958, P=0.001]. The scores of the experimental group in various tests were higher than those of the control group, namely, scanning positioning [(8.9±0.5) vs. (8.6±0.4)], cardiac structure and anatomical annotation [(9.2±0.9) vs. (8.2±1.2)], CMR post-processing score [(8.6±0.9) vs. (7.7±1.2)], overall process control [(9.1±1.5) vs. (6.9±1.3)], and myocardial tissue feature recognition [(8.9±2.1) vs. (8.4±1.8)], all P<0.05. The learning time ratio of the experimental group in scanning positioning and overall process control was shorter than that of the control group, namely, scanning positioning [(5.4±0.1)/h vs. (5.9±0.1)/h], and overall process control [(8.3±1.0)/h vs. (13.0±1.3)/h, all P<0.05; while the CMR post-processing score and myocardial tissue feature recognition of the experimental group were higher than those of the control group, namely, CMR post-processing score [(3.9±0.6)/h vs. (3.5±0.7)/h], and myocardial tissue feature recognition [(4.0±0.6) vs. (3.4±0.4)], all P<0.05. The self-assessment results of the students in the experimental group were higher than those in the control group in terms of interest in CMR technology [(9.3±0.5) vs. (8.2±0.3)], independent operation of the entire CMR scanning process [(8.5±0.4) vs. (7.9±0.3)], reading of cutting-edge literature in the field of CMR [(9.1±0.6) vs. (7.2±0.5)], improvement of learning efficiency [(8.6±0.6) vs. (8.2±0.6)], and satisfaction with the teaching mode [(9.5±0.7) vs. (9.2±0.5)], all P<0.05. At the same time, the experimental group had higher scores in 8 indicators in the evaluation of teachers than the control group, namely, enthusiasm for learning CMR technology scanning [(8.5±0.6) vs. (7.7±0.4)], enthusiasm for independent learning [(8.0±0.5) vs. (7.2±0.4)], mastery of the basic principles and related theories of CMR operation [(7.5±0.3) vs. (6.5±0.7)], the ability to analyze CMR scanning strategies [(8.2±0.4) vs. (6.0±0.5)], the ability to understand the cutting-edge literature on CMR technology [(8.1±0.9) vs. (7.5±0.6)], actively paying attention to high-level technological progress in the field of CMR [(7.7±0.5) vs. (5.0±0.2)], providing professional and systematic guidance [(8.9±0.6) vs. (8.5±0.6)], and being very satisfied with the current CMR teaching mode [(8.2±0.7) vs. (8.0±0.4)], all P<0.05. Conclusion The knowledge transformation model can stimulate students’ initiative in self-learning, complement and moderately intersect with the traditional teaching mode, and condense the best teaching strategy.
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北京市教育科学“十三五”规划2020年度一般课题(CHDB2020174)
首都医科大学教学模式与方法推进项目(2019JYJX138)
首都医科大学本科学生科研创新项目(XSKY2024396)
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