基于深度学习的伪CT合成从骨的零回声时间MR序列
Jonas M Getzmann1,2,3, Eva Deininger-Czermak4,5,6, Savvas Melissanidis4,5
1Institute of Diagnostic and Interventional Radiology, University Hospital Zurich (USZ), Zurich, Switzerland. jonas.getzmann@gmail.com.
Insights into imaging
|August 9, 2024
概括
从MRI零回声时间 (ZTE) 序列生成的伪CT (pCT) 图像与传统CT扫描显示出很好的一致性,提供准确的骨描绘和在不暴露于辐射的情况下的几何测量.
科学领域:
- 医疗成像医学成像
- 放射学 放射学是一门学科.
- 人工智能在医学中的应用
背景情况:
- 传统的CT扫描涉及辐射暴露,造成重复成像的风险.
- 核磁共振提供了优秀的软组织对比度,但缺乏CT的骨细节.
- 开发无辐射成像替代方案对于患者安全和频繁监测至关重要.
研究的目的:
- 为了从盆腔ZTE MRI序列中合成伪CT (pCT) 图像.
- 与传统CT相比,评估合成的pCT图像的准确性和质量.
- 探索pCT在减少盆腔成像中的辐射暴露方面的潜力.
主要方法:
- 预期CT和ZTEMRI扫描91名患者.
- 11个数据集因植入物或B1不均性而被排除.
- 在60个数据集上训练深度学习 (DL) 模型,用于从ZTE序列中进行pCT合成.
- 在20个个案例的单独队列上验证DL模型.
- 通过两个独立的读者对CT和pCT图像进行定性和定量评估.
主要成果:
- pCT图像表现出良好的到完美的质量评级.
- 在CT和pCT之间达成高间联运协议 (ICC=0.88).
- 对于pCT (ICC=0.91) 的优秀的读者间协议.
- 在大多数几何测量中没有显著差异,除了横横的骨盆直径和侧面中边角外.
- 在CT和pCT之间,图像质量和组织差异可比,对比度与噪声比率 (CNRs) 类似.
结论:
- 从ZTE MRI中基于DL的pCT合成对于盆腔成像是可行的和准确的.
- pCT图像提供了高骨质描绘质量和可靠的几何测量.
- pCT为评估骨提供了CT的无辐射替代方案,在退行性疾病和手术规划中具有广泛的应用.
相关概念视频
01:10Computed Tomography
4.4K
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...
4.4K
01:14Imaging Studies I: CT and MRI
209
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...
209