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首页> 外文期刊>Acta Radiologica >Improvement of image quality applying iterative scatter correction for grid-less skeletal radiography in trauma room setting
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Improvement of image quality applying iterative scatter correction for grid-less skeletal radiography in trauma room setting

机译：应用迭代散射校正在创伤室内骨骼射线照相中应用迭代散射校正的图像质量

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Background Iterative reconstruction is well established for CT. Plain radiography also takes advantage of iterative algorithms to reduce scatter radiation and improve image quality. First applications have been described for bedside chest X-ray. A recent experimental approach also provided proof of principle for skeletal imaging. Purpose To examine clinical applicability of iterative scatter correction for skeletal imaging in the trauma setting. Material and Methods In this retrospective single-center study, 209 grid-less radiographs were routinely acquired in the trauma room for 12 months, with imaging of the chest (n = 31), knee (n = 111), pelvis (n = 14), shoulder (n = 24), and other regions close to the trunk (n = 29). Radiographs were postprocessed with iterative scatter correction, doubling the number of images. The radiographs were then independently evaluated by three radiologists and three surgeons. A five-step rating scale and visual grading characteristics analysis were used. The area under the VGC curve (AUC(VGC)) quantified differences in image quality. Results Images with iterative scatter correction were generally rated significantly better (AUC(VGC) = 0.59, P < 0.01). This included both radiologists (AUC(VGC) = 0.61, P < 0.01) and surgeons (AUC(VGC) = 0.56, P < 0.01). The image-improving effect was significant for all body regions; in detail: chest (AUC(VGC) = 0.64, P < 0.01), knee (AUC(VGC) = 0.61, P < 0.01), pelvis (AUC(VGC) = 0.60, P = 0.01), shoulder (AUC(VGC) = 0.59, P = 0.02), and others close to the trunk (AUC(VGC) = 0.59, P < 0.01). Conclusion Iterative scatter correction improves the image quality of grid-less skeletal radiography in the clinical setting for a wide range of body regions. Therefore, iterative scatter correction may be the future method of choice for free exposure imaging when an anti-scatter grid is omitted due to high risk of tube-detector misalignment.
机译：背景技术为CT建立了迭代重建。普通射线照相还利用迭代算法来减少散射辐射并提高图像质量。已针对床头胸X射线描述了第一个应用。最近的实验方法还提供了骨骼成像原理的证据。目的研究创伤环境中骨骼成像迭代散射校正的临床适用性。本回顾性单中心研究中的材料和方法，在创伤室内常规地获得了209个网格射线照片12个月，胸部成像（n = 31），膝关节（n = 111），骨盆（n = 14 ），肩部（n = 24）和靠近行李箱的其他区域（n = 29）。射线照相被迭代散射校正后处理，将图像数倍加倍。然后通过三个放射科医生和三个外科医生独立地评估射线照片。使用了五步评级规模和视觉分级特性分析。 VGC曲线下的区域（AUC（VGC））量化图像质量的差异。结果迭代散射校正的图像通常明显更好（AUC（VGC）= 0.59，P <0.01）。这包括放射科医生（AUC（VGC）= 0.61，P <0.01）和外科医生（AUC（VGC）= 0.56，P <0.01）。图像改善效果对于所有身体区域都很重要;详细说明：胸部（AUC（VGC）= 0.64，P <0.01），膝关节（AUC（VGC）= 0.61，P <0.01），骨盆（AUC（VGC）= 0.60，P = 0.01），肩部（AUC（VGC ）= 0.59，p = 0.02），其他接近行李箱（AUC（VGC）= 0.59，P <0.01）。结论迭代散射校正可提高临床环境中较少骨骼放射线照相的图像质量，为广泛的身体区域。因此，当由于管道检测器未对准的高风险而省略了防散射网格时，迭代散射校正可以是可自由曝光成像的选择方法。

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