Synchrotron light and imaging systems for medical radiology
Synchrotron light and imaging systems for medical radiology
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DOI：
10.1016/s0168-9002(00)00803-2
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发表时间：
2000-11-01
影响因子：
1.4
通讯作者：
Arfelli, F
中科院分区：
文献类型：
--
作者：
Arfelli, F
在过去的几年中，一些成功的实验研究证明了同步加速器光在医学放射学和诊断医学成像领域的适用性。下面将提及和回顾的是同步辐射的经静脉冠状动脉造影、支气管造影、单能量或多能量断层扫描以及基于同步辐射的乳房X线摄影。其中最苛刻的应用是 X 射线乳房 X 线摄影。在这里，专用系统必须满足对源和 X 射线探测器的严格要求。基于同步辐射的乳房X线照相术利用可调谐单色能量和光束独特的层状几何形状，能够在保持低剂量水平的情况下提高图像质量。此外，通过开发用于全视场数字乳腺X线摄影的新型探测器，可以实现进一步的改进，以克服传统屏幕胶片系统的固有局限性。的里雅斯特同步加速器辐射设施 ELETTRA 的医疗光束线在数字乳房 X 线摄影方面取得了令人鼓舞的结果。此外，同步加速器源的高度空间相干性允许基于相衬效应的新成像模式，产生具有高度增强的对比度和低剂量的优质放射线照片。 (C) 2000 Elsevier Science B.V. 保留所有权利。
In the past years several successful experimental studies have proven the suitability of synchrotron light in the field of medical radiology and in diagnostic medical imaging. To be mentioned and reviewed in the following are transvenous coronary angiography with synchrotron radiation, bronchography, single- or multi-energy tomography and synchrotron radiation-based mammography. Amongst those the most demanding application is X-ray mammography. Here, a dedicated system has to fulfil the demanding requirements on the source and the X-ray detector. Synchrotron radiation-based mammography, which enables improved image quality maintaining a low dose level, takes advantage of the tunable monochromatic energy and of the peculiar laminar geometry of the beam. In addition, further improvements can be achieved with the development of novel detectors for full-field digital mammography in order to overcome the intrinsic limitations of the conventional screen-film systems. Encouraging results in digital mammography have been obtained at the medical beamline of the synchrotron radiation facility ELETTRA, Trieste. Besides, the high degree of the spatial coherence of the synchrotron source allows new imaging modalities based on phase contrast effects that produce superior radiographs featuring highly enhanced contrast with a low delivered dose. (C) 2000 Elsevier Science B.V. All rights reserved.