Modification of the NEMA XR21-2000 cardiac phantom for testing of imaging systems used in endovascular image guided interventions.
Modification of the NEMA XR21-2000 cardiac phantom for testing of imaging systems used in endovascular image guided interventions.
复制标题
改进 NEMA XR21-2000 心脏模型，用于测试血管内图像引导干预中使用的成像系统。
DOI：
10.1117/12.813533
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
Rudin,S
中科院分区：
文献类型：
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作者：
Ionita,CN;Dohatcu,A;Jain,A;Keleshis,C;Hoffmann,KR;Bednarek,DR;Rudin,S
使用模拟特定人体解剖结构、形态和结构的体模进行X射线设备测试是此类设备研究、开发和常规质量保证中非常重要的一步。虽然NEMA XR 21体模适用于心脏应用，但神经、外周和心血管血管造影应用没有此类标准体模。我们已经扩展了NEMA XR 21 -2000体模的应用，通过将其构造为头部等效来评估神经血管X射线成像系统;将两块形状适合NEMA体模几何形状的铝板添加到15 cm厚的部分。此外，为了进行数字减影血管造影（DSA）测试，制作了两个带有中空槽的可更换中心板，以便将各种血管造影切片插入体模中。我们使用专门用于血管内图像引导介入的平板C形臂装置测试了新的改良体模。所有NEMA XR 21 -2000标准测试部分均用于新“头部等效”体模的评价。DSA和DA能够使用具有不同厚度和碘浓度的模拟动脉的两个标准可移动块进行测试（AAPM报告15）。新的体模修改的好处是能够在神经和心血管应用中使用标准NEMA体模进行血管造影，方便的是只需要一个多功能体模即可用于多种应用。与使用多个幻影相比，额外的好处是增加了便携性和降低了成本。
X-ray equipment testing using phantoms that mimic the specific human anatomy, morphology, and structure is a very important step in the research, development, and routine quality assurance for such equipment. Although the NEMA XR21 phantom exists for cardiac applications, there is no such standard phantom for neuro-, peripheral and cardiovascular angiographic applications. We have extended the application of the NEMA XR21-2000 phantom to evaluate neurovascular x-ray imaging systems by structuring it to be head-equivalent; two aluminum plates shaped to fit into the NEMA phantom geometry were added to a 15 cm thick section. Also, to enable digital subtraction angiography (DSA) testing, two replaceable central plates with a hollow slot were made so that various angiographic sections could be inserted into the phantom. We tested the new modified phantom using a flat panel C-arm unit dedicated for endovascular image-guided interventions. All NEMA XR21-2000 standard test sections were used in evaluations with the new "headequivalent" phantom. DSA and DA are able to be tested using two standard removable blocks having simulated arteries of various thickness and iodine concentrations (AAPM Report 15). The new phantom modifications have the benefits of enabling use of the standard NEMA phantom for angiography in both neuro- and cardio-vascular applications, with the convenience of needing only one versatile phantom for multiple applications. Additional benefits compared to using multiple phantoms are increased portability and lower cost.