{"title":"Effect of spatial orientation on the image-intensifier distortion in quantitative coronary angiography","authors":"E. Gronenschild","doi":"10.1109/CIC.1993.378332","DOIUrl":null,"url":null,"abstract":"The effect of spatial orientation of the X-ray gantry on the geometric image distortion caused by the image intensifier (II) is assessed. Variations in absolute positions up to 0.6 mm (14 cm II size), 1.1 mm (17 cm), and 2.8 mm (27 cm) are found for the used Hicor X-ray system. The pixel size varies up to 0.8% (14 cm), 1.1% (17 cm), and 2.3% (27 cm). It is concluded that for accurate quantitative coronary angiography and 3D reconstructions it is necessary to measure the distortion and to correct for it at each of the used orientations.<<ETX>>","PeriodicalId":20445,"journal":{"name":"Proceedings of Computers in Cardiology Conference","volume":"56 1","pages":"595-598"},"PeriodicalIF":0.0000,"publicationDate":"1993-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"9","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of Computers in Cardiology Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CIC.1993.378332","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 9
Abstract
The effect of spatial orientation of the X-ray gantry on the geometric image distortion caused by the image intensifier (II) is assessed. Variations in absolute positions up to 0.6 mm (14 cm II size), 1.1 mm (17 cm), and 2.8 mm (27 cm) are found for the used Hicor X-ray system. The pixel size varies up to 0.8% (14 cm), 1.1% (17 cm), and 2.3% (27 cm). It is concluded that for accurate quantitative coronary angiography and 3D reconstructions it is necessary to measure the distortion and to correct for it at each of the used orientations.<>
评估了x射线龙门的空间取向对图像增强器(II)引起的几何图像畸变的影响。在使用的Hicor x射线系统中，绝对位置的变化可达0.6 mm (14 cm II尺寸)，1.1 mm (17 cm)和2.8 mm (27 cm)。像素大小可达0.8%(14厘米)、1.1%(17厘米)和2.3%(27厘米)。由此得出结论，为了准确定量冠脉造影和三维重建，有必要在每个使用的方向上测量畸变并对其进行校正。
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