螺旋CT低剂量扫描在肺部疾病诊断中的应用进展

随着螺旋CT在临床上应用的日益广泛,受检人群的辐射危害应得到更多关注。CT低剂量扫描技术的研究及临床应用显得格外关键和迫切。多层螺旋CT低剂量成像技术通过调节扫描参数或修改扫描方案,在满足图像诊断要求的前提下大大降低了辐射剂量,因此越来越受到人们的广泛关注。而肺部本身具有良好的天然对比,同时CT扫描与X射线平片相比具有较高的密度分辨率且无组织重叠的关系,因此螺旋CT扫描被广泛应用于肺部病变的诊断及复查。本文从低剂量成像的必要性及降低辐射剂量的方法出发,就其在肺部不同疾病中的应用研究及未来方向进行综述。

Progress in the application of spiral CT low-dose scanning in the diagnosis of pulmonary diseases

With the extensively increasingly extensive application of spiral CT in clinical practice, more attention on the radiation hazard to the examinees should be paid. Therefore, the research and clinical application of low- dose CT scanning technology are very important and urgent. By adjusting the scanning parameters or modifying the scanning scheme, the multi-slice spiral CT low-dose imaging technology can largely reduce the radiation dose while satisfying the requirements of image diagnosis, it has attracted more and more attention. The lung itself has good natural contrast, with while the CT scan has a higher density resolution and no tissue overlap compared with X-ray plain film. Therefore,the spiral CT scan has been widely used in the diagnosis and review of lung lesions. Based on the necessity of low dose imaging and the methods of reducing radiation dose, this paper reviews the application and future direction of low dose imaging in different lung diseases.