胸部的扩散权重成像:放射科医生的一本小册子
Jordi Broncano1, Kacie Steinbrecher1, Kaitlin M Marquis1
1From the Cardiothoracic Imaging Unit (J.B.) and Department of Radiology (J.B., J.R.d.V.), Hospital San Juan de Dios, HT-RESSALTA, HT Médica, Avenida el Brillante No. 36, 14012 Córdoba, Spain; Cardiothoracic Imaging Section, Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (K.S., K.M.M., C.A.R., S.B.); Cardiothoracic Imaging Section, Department of Radiology, Hospital Clínic de Barcelona, Barcelona, Spain (I.V.); and MRI Section, Department of Radiology, Clínica Las Nieves, HT-SERCOSA, HT Médica, Jaén, Spain (A.L.).
扩散权重成像 (DWI) 通过改善病变检测和表征来增强胸部的MRI. 这种非侵入性技术为诊断胸部瘤和监测治疗反应提供了定量见解.
科学领域:
- 磁共振成像是一种磁共振成像技术.
- 瘤成像学成像学
- 胸部成像 胸部成像
背景情况:
- 扩散权重成像 (DWI) 在神经成像和瘤学中至关重要.
- 在胸部MRI中DWI的新兴应用正在扩大其实用性.
- DWI提供了超越空间分辨率的功能信息,以微米尺度测量扩散.
研究的目的:
- 突出DWI在胸部MRI中的作用和优化.
- 为了证明DWI在增强病变显著性和特征化的能力.
- 在胸部癌症评估中比较DWI与PET/CT的优势.
主要方法:
- 优化DWI获取参数,包括b值,并行成像,脂肪和和运动校正.
- 评估DWI信号减弱和表面扩散系数 (ADC) 地图用于组织特征.
- 评估与DWI一起的形态和其他功能性MRI特征.
主要成果:
- DWI 提高了肺部,胸中和胸膜病变的检测,具有出色的对比度和噪声比.
- DWI有助于表征囊性病变,并将胸部病变分类为良性或恶性.
- 在肺癌评估,分期和治疗监测方面,DWI比18F-FDG PET/CT具有优势.
结论:
- DWI是胸部MRI的一个有价值,非侵入性,定量和可复制的工具.
- 仔细的参数优化对于DWI在胸部成像中的有效实施至关重要.
- DWI在评估和治疗胸部瘤方面具有显著的好处.
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