中国医学装备2017，Vol.14Issue(7)：68-71,4.DOI:10.3969/J.ISSN.1672-8270.2017.07.017
CT高级建模迭代重建算法对图像质量的影响初步研究
Preliminary study on the effect of advanced modeled iterative reconstruction algorithm for image quality
摘要
Abstract
Objective: To research the effect of advanced modeled iterative reconstruction (ADMIRE) algorithm for images quality of multi-slice spiral CT scanner of SIEMENS. Methods: Under the same scanning condition, the CTP515 and CTP528 of Catphan500 were scanned by using spiral method of SOMATOM Force CT (SIEMENS). The images were reconstructed by two conditions (didn't use ADMIRE algorithm, or used different intensity of ADMIRE algorithm). And then, these images from different conditions were evaluated by subjective method and objective method, respectively. Results: When the low contrasts were 0.3%, 0.5% or 1.0%, the image noises were 4.90, 4.50 and 5.23, respectively, under didn't use ADMIRE algorithm. In the same contrast, the noises were reduced 18,35%, 53.23% and 18.82%, respectively, under ADMIRE2. And the noises were reduced 52.32%, 20.33% and 53.79%, respectively, under ADMIRE5. When ADMIRE0, ADMIRE2 and ADMIRE5 were used to reconstruct the image of CTP528 module, respectively, the smallest details that could be observed were identical that was 7.0 Line Pairs/cm under subjective observation for images. Conclusion: Using ADMIRE to reconstruct images can effectively reduce the noise while the image resolution don't be affected. And to enhance the resolution power of low contrast for CT image can more accurately help clinician to observe lesion with similar tissue density and contribute to diagnose disease.关键词
多排螺旋CT/低对比度分辨率/高级建模迭代重建算法/主观评价/图像质量Key words
Multislice spiral CT (MSCT)/Low contrast resolution/Advanced modeled iterative reconstruction (ADMIRE)/Subjective evaluation/Image quality分类
医药卫生引用本文复制引用
陆亚光,庄静文,吴天棋,白玫..CT高级建模迭代重建算法对图像质量的影响初步研究[J].中国医学装备,2017,14(7):68-71,4.基金项目
国家自然科学基金(81372923)"宽探测器螺旋CT所致辐射剂量评价方法研究" （81372923）
