更高的计算机断层扫描 (CT) 扫描分辨率提高了与尸体黄金标准相比,患者特有的下模型的准确性
Maariyah Ahmed1, Luigi E Melaragno1, Sarah C Nyirjesy2
1Undergraduate Student, Center for Design and Manufacturing Excellence, College of Engineering, The Ohio State University, Columbus, OH; Undergraduate Student, The Ohio State University College of Engineering, Department of Biomedical Engineering, Columbus, OH.
概括
高分辨率的计算机断层扫描 (CT) 扫描 (3.00毫米或更小的切片厚度) 提高了用于重建手术的3D打印下模型的准确性. 数字雕塑进一步提高了精度,3D打印保持了精度.
科学领域:
- 医疗成像医学成像
- 生物医学工程 生物医学工程
- 口腔和牙面部外科手术
背景情况:
- 针对患者的3D打印解剖模型越来越多地用于口腔癌重建性手术规划.
- 目前的文献缺乏关于这些模型的准确性和计算机断层扫描 (CT) 解析度的影响的全面数据.
- 了解这些因素对于优化手术规划和结果至关重要.
研究的目的:
- 确定必要的CTz轴分辨率,以创建患者特定的下模型,以临床上可接受的准确性进行骨重建.
- 评估数字雕塑和3D打印过程对这些解剖模型整体准确性的影响.
主要方法:
- 一个横截面研究使用8个甲固定尸体头.
- 独立变量包括CT扫描切片厚度 (0.675,1.25,3.00,5.00毫米) 和模型类型 (未雕刻,数字雕刻,3D打印).
- 使用根平均平方 (RMS) 值评估准确性,通过表面扫描将数字模型与剖析的尸体骨进行比较;采用单向和双向ANOVA进行统计分析.
主要成果:
- 较低的CT切片厚度 (更高分辨率) 导致与尸体黄金标准相比,在统计上更准确的3D打印下模型 (RMS值随着切片厚度的下降而下降).
- 在所有测试的切片厚度 (P < .05) 中,数字雕塑模型的准确性明显高于未雕塑模型.
- 在3D打印过程本身中没有观察到明显的准确性损失.
结论:
- 与5.00毫米切片相比,切片厚度为3.00毫米或更小的CT扫描在模型准确度上取得了统计学上显著的改善.
- 数字雕塑过程显著提高了模型的准确性.
- 3D打印过程不会引入显著的准确性损失,使这些模型可靠用于重建性手术规划.
相关概念视频
01:10Computed Tomography
4.6K
Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
4.6K
01:14Imaging Studies I: CT and MRI
303
Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
303