超声引导下甲状腺细针穿刺是诊断甲状腺结节良恶性的一种准确的方法。因为缺少廉价、高仿真的模型，所以绝大多数住院医师都没有在模型上进行充分的练习。笔者的目的是制作一个低成本、高仿真的模型用于住院医师的培训。

魔芋、明胶、玉米淀粉、试管、鱼油胶囊等经过简单的过程制作成一个高仿真的模型。20名超声专业的住院医师参加了甲状腺细针穿刺的培训，并在培训前后填写了问卷调查。

该模型成功、逼真地模拟了甲状腺解剖和超声声像图。所有参加训练的住院医师均认为这个培训课程有价值。调查的问题均有显著的提高。对技术的信心显著提高，而焦虑明显降低。

这个魔芋-明胶模型是一个用于超声引导下甲状腺结节细针穿刺住院医师培训的低成本、高仿真的模型。

Ultrasound (US)-guided fine needle aspiration is an accurate method for the diagnosis of benign and malignant thyroid nodules. Given the lack of cheap and high-fidelity simulation models, most domestic residents do not practice enough on the models. This study attempted to provide a cost-effective viable and high-fidelity simulation model for training radiology residents in ultrasound-guided thyroid fine-needle aspiration.

A high-fidelity simulation model was made by using konjac, gelatin, cornstarch, tubes (small-sized and medium-sized) and several fish oil capsules. Twenty ultrasound residents participated in the training of thyroid fine needle puncture using our self-made model, and filled in a questionnaire before and after the training.

The anatomical and ultrasonographic images of the thyroid glands obtained using our simulation model were extremely close to real-world ones. All participants found that the training session was valuable. There was a statistically significant improvement in all surveyed aspects (statistically significant increases in both professional knowledge and technical confidence of residents, and a statistically significant decrease in the residents' anxiety degree related to performing thyroid biopsy).

The konjac-gelatin simulation model is a cost-effective, high-fidelity phantom for training residents in ultrasound-guided fine needle thyroid nodule targeting punctures.