磁共振成像 (MRI) 的扫描/重新扫描可靠性
Menekse Salar Barim1, M Fehmi Capanoglu2,3, Richard F Sesek2
1Division of Field Studies and Engineering (DFSE), Engineering and Physical Hazards Branch (EPHB), Human Factors and Ergonomics Team (HFET), National Institute of Occupational Safety and Health (NIOSH), 1090 Tusculum Avenue, Cincinnati, OH, 45226, USA. oih9@cdc.gov.
概括
磁共振成像 (MRI) 提供了可靠的腰椎大小测量. 整个MRI过程,包括成像和分析,显示最小的变化,支持其用于生物力学评估.
科学领域:
- 生物医学工程 生物医学工程
- 放射学 放射学是一门学科.
- 整形外科 整形外科 整形外科
背景情况:
- 磁共振成像 (MRI) 被广泛用于估计腰椎的尺寸.
- 以前的可靠性研究经常比较相同的MRI扫描,限制了对整个成像和分析过程的评估.
- 评估整个MRI工作流程对于准确的生物力学评估至关重要.
研究的目的:
- 评估整个MRI过程的inter-和intra-rater可靠性,以测量腰椎特征.
- 将成像,图像选择和数据分析纳入可靠性评估中.
- 为了确定MRI衍生生物力学测量的稳定性.
主要方法:
- 分析了144个低背部MRI扫描来评估可靠性.
- 通过在不同时间进行相同的分析师率相同的扫描来评估评估者内部可靠性.
- 通过不同运营商和分析师的不同的扫描来评估评级者之间的可靠性.
- 计算平均绝对差异和已识别的变化源,如呼吸器件.
主要成果:
- 在评估者之间的可靠性方面发现了较大的差异,特别是当MRI操作员和分析师都不同时 (前端末板的平均绝对差异为4.05%).
- 当分析师在一个月后重新评估自己的扫描时,评分器内部的可靠性显示出较低的平均绝对差异2.76%.
- 测量的变化一般很低,主要归因于呼吸等人工物.
结论:
- 磁力共振成像 (MRI) 过程用于导出骨结构的生物力学测量非常可靠.
- 测量变化最小,即使在具有挑战性的条件下,验证MRI对生物力学评估的实用性.
- 这项研究支持常规使用MRI用于腰椎的定量生物机械分析.
相关概念视频
01:24Magnetic Resonance Imaging
4.9K
Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
4.9K
01:14Imaging Studies I: CT and MRI
187
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...
187
01:14NMR Spectrometers: Resolution and Error Correction
657
When magnetic nuclei in a sample achieve resonance and undergo relaxation, the signal detected in NMR is an approximately exponential free induction decay. Fourier transform of an exponential decay yields a Lorentzian peak in the frequency domain. Lorentzian peaks in an NMR spectrum are defined by their amplitude, full width at half maximum, and position, where the peak width is governed by the spin-spin relaxation time alone. In real experiments, however, the applied magnetic field is rendered...
657
01:30Radiological Investigation II: MRI and Ventilation Perfusion Scan
98
Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
98