齿科CT测试体模的设计及评估

刘欢; 伏全海; 陈晓朝; 侯耀芳; 孙智勇; 康雁

齿科CT测试体模的设计及评估

1. 东北大学中荷生物医学与信息工程学院, 沈阳 110819;
2. 辽宁省医疗器械检验所, 沈阳 110179

基金项目:

国家自然科学基金(61372014)

国家科技支撑计划(2012BAI22B04)

详细信息

作者简介:
刘欢(1989-),女,东北大学生物医学与信息工程学院硕士研究生,主要从事医学成像与图像分析研究,Tel:024-83688859;E-mail:liuhuanyxf@163.com;康雁(1964-),男,东北大学教授,主要从事医学成像与图像分析、医学智能辅助技术,计算机模拟研究,Tel:024-83676663,E-mail:kangyan@bmie.neu.edu.cn

通讯作者:
康雁(1964-),男,东北大学教授,主要从事医学成像与图像分析、医学智能辅助技术,计算机模拟研究,Tel:024-83676663,E-mail:kangyan@bmie.neu.edu.cn

中图分类号: TP391.41
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出版历程
- 收稿日期: 2014-04-20
- 网络出版日期: 2022-12-09

Design and Evaluation of Dental CT Test Phantom

1. Sino-Dutch Biomedical and Information Engineering School of Northeastern University, Shenyang 110819, China;
2. Liaoning Province Medical Device Test Institute, Shenyang 110179, China

摘要

摘要: 体模是用于客观评价齿科CT图像质量的重要介质。医用行业标准“YY/0795-2010口腔X射线数字化体层摄影设备专用技术条件”推荐使用“DIGIDENT牙科测试体模”, 该体模能够较好地检测出部分参数, 但是没有测量层厚的模块;用于评价密度分辨率和空间分辨率的模块不够完善。本文提出一种既适用于评估齿科CT图像质量又可用于双能减影实验的测试体模。经实验验证, 使用该体模检测齿科CT各项指标的效果要优于使用现有体模的检测效果。该体模的提出为齿科CT检测体模的设计提供了一种新思路。
- 齿科CT /
- 体模 /
- 层厚 /
- 空间分辨率 /
- 密度分辨率 /
- 双能减影
Abstract: Phantom is widely used to evaluate CT image quality objectively. Currently, only DIGIDENT Phantom is exclusively used in evaluating image performance of Dental CT. This phantom was recommended by "YY/T 0795-2010 Particular specification for oral cavity X-ray equipment for digital tomography". Although most of image parameters can be tested by this phantom, there are still disadvantages with it. For example, no module for slice thickness measurement and the density resolution and spatial resolution module can be improved. Hence, this paper proposed an innovative phantom which can not only be used to evaluate image quality of dental CT, but also be suitable for the dual-energy subtraction experiment. By experimental verification, the performance of this phantom is much better than existed DIGIDENT Phantom when evaluating dental CT's image quality. A new phantom design and evaluation way were presented, which will contribute to the development of dental CT phantom.
- dental CT /
- phantom /
- thickness /
- spatial resolution /
- density resolution /
- dual-energy subtraction