Objective

2

To explore the application effects of improved case-based learning (CBL) combined with hierarchical and progressive teaching in the standardized training of nuclear medicine resident physicians.

Methods

2

A total of 43 resident physicians who rotated in the nuclear medicine base of our hospital between 2018 and 2023 were selected as the research subjects and divided into an experimental group (

n

=22) and a control group (

n

=21) according to the order of enrollment. The control group received the traditional teacher-centered teaching model and was divided into junior and senior subgroups according to the training years. The experimental group received the improved CBL combined with hierarchical and progressive teaching. First

through multidimensional evaluation (theoretical testing + standardized case analysis)

the students were scientifically divided into preliminary

intermediate

and advanced levels. Subsequently

progressive teaching objectives were set for different levels

and real clinical cases embedded with hierarchical learning tasks were published. During the teaching process

a dynamic discussion mode combining homogeneous and heterogeneous grouping was adopted

and personalized guidance was provided by the teachers. Finally

dynamic hierarchical adjustment was implemented through process evaluation. After the training

the two groups were compared in terms of exit assessment performance (including professional basic theory and practical skills) and teaching satisfaction.

Results

2

The

total score of the exit assessment of the experimental group was higher than that of the control group [(86.90±6.78) vs. (75.09±8.45)

]

and the difference was statistically significant. In terms of practical skill assessment

the experimental group scored higher than the control group in modules such as imaging symptom description [(22.34±2.56) vs. (19.85±3.12)

]

localization diagnosis [(23.01±2.11) vs. (20.12±2.98)

]

qualitative diagnosis [(22.89±2.67 vs. 18.67±3.45)

]

and differential diagnosis [(21.56±2.89) vs. (17.23±3.78)

]

(

P

<

0.01). The teaching satisfaction survey showed that the satisfaction scores of the experimental group were higher than those of the control group in nine domains

including theoretical knowledge mastery

clinical thinking

image interpretation

and learning initiative (

P

<

0.05).

Conclusions

2

The improved CBL combined with hierarchical and progressive teaching can effectively improve the exit assessment performance

clinical practice skills

and teaching satisfaction of nuclear medicine resident trainees

and is worthy of promotion.