Single-shot Talbot–Lau x-ray dark-field imaging of a porcine lung applying the moiré imaging approach
Single-shot Talbot–Lau x-ray dark-field imaging of a porcine lung applying the moiré imaging approach
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应用莫尔成像方法对猪肺进行单次 TalbotâLau X 射线暗场成像
DOI：
10.1088/1361-6560/aadafe
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发表时间：
2018
影响因子：
3.5
通讯作者：
Gisela
中科院分区：
文献类型：
--
作者：
Seifert;Ludwig;Veronika;Gallerdoerfer;Michael;Christian;Hellbach;Katharina;Florian;Pelzer;Radicke;Marcus;Rieger;Sutter;Sven-Martin;Michel;Gisela
Talbot-Lau X射线成像除了常规衰减图像之外还提供了两个另外的图像：对折射特性的差异特别敏感的微分相衬图像和示出对象的X射线散射特性的暗场图像。因此，在暗场图像中，可以观察到子像素化的对象信息。正如最近的研究所示，这对肺部成像特别重要。在暗场图像中可以看到肺泡结构的变化，其大小为一个探测器像素。快速采集过程对于避免患者心跳和呼吸引起的运动伪影至关重要。使用莫尔成像，图像可以通过单次曝光获得。然而，与相位步进采集相比，空间分辨率降低。我们评估了这两种成像技术在临床常规中的可行性。此外，我们分析了人工线性物体运动对图像质量的影响，以模拟病人的心跳。
Talbot–Lau x-ray imaging provides additionally to the conventional attenuation image, two further images: the differential phase-contrast image which is especially sensitive to differences in refractive properties and the dark-field image which is showing the x-ray scattering properties of the object. Thus, in the dark-field image sub-pixeled object information can be observed. As it has been shown in recent studies, this is of special interest for lung imaging. Changes in the alveoli structure, which are in the size of one detector pixel, can be seen in the dark-field images. A fast acquisition process is crucial to avoid motion artifacts due to heartbeat and breathing of the patient. Using moiré imaging the images can be acquired with a single-shot exposure. Nevertheless, the spatial resolution is reduced compared to the phase-stepping acquisition. We evaluate the results of both imaging techniques towards their feasibility in clinical routine. Furthermore, we analyse the influence of artificial linear object movement on the image quality, in order to simulate the heartbeat of a patient.
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影响因子：
6.7
作者：
Hellbach, Katharina;Yaroshenko, Andre;Pfeiffer, Franz
通讯作者：
Pfeiffer, Franz
影响因子：
3.8
作者：
Hauke, C.;Bartl, P.;Hellbach, K.
通讯作者：
Hellbach, K.
影响因子：
6.7
作者：
Meinel, Felix G.;Yaroshenko, Andre;Yildirim, Ali Oe.
通讯作者：
Yildirim, Ali Oe.
影响因子：
4.6
作者：
Hellbach K;Yaroshenko A;Willer K;Conlon TM;Braunagel MB;Auweter S;Yildirim AÖ;Eickelberg O;Pfeiffer F;Reiser MF;Meinel FG
通讯作者：
Meinel FG
X射线Talbot-Lau莫尔成像能见度损失的测量与模拟证明
影响因子：
1.3
作者：
M. Seifert;M. Gallersdörfer;F. Horn;V. Ludwig;M. Schuster;G. Pelzer;J. Rieger;T. Michel;G. Anton
通讯作者：
G. Anton