中国医疗设备2016，Vol.31Issue(7)：16-18,3.DOI:10.3969/j.issn.1674-1633.2016.07.005
低能量成像技术在布加综合征肝内门脉系统及下腔静脉系统成像中的临床应用
Clinical Application of Monochromatic Spectral CT Imaging for Portal Vein and Inferior Vena Cava Image Improvement in Patients with Budd-Chiari Syndrome
吴艳 1苏蕾 1侯平 1蒋耀军 1刘杰 1高剑波1
作者信息
- 1. 郑州大学第一附属医院放射科，河南郑州450052
- 折叠
摘要
Abstract
Objective To investigate the clinical effectiveness of application of monochromatic spectral CT imaging for portal vein and inferior vena cava image improvement in patients with budd-chiarissyndrome. Methods Altogether 16 patients with budd-chiari syndrome were selected and scanned by using GE Discovery CT machine to achieve the spectral CT images of the portal venous phase (PVP) and the hepatic venous phase (HVP). Spectral CT images of 4 monochromatic energy level ( 40, 50, 60, 70 keV) with 60%ASIR were reconstructed for comparison. Regions-of-interest (ROIs) were placed in the portal vein (PV), hepatic vein (HV), inferior vena cava (IVC) to measure CT value and image noise (SD). Signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR) and quantitative measurements of vessels were calculated. Image quality for all groups was statistically compared. Results CNR of PV, HV and IVC in 40 keV and 50 keV data sets were (15.13±11.39, 13.31±10.16), (6.79±7.40, 5.27±4.74) and (4.03±3.27, 3.24±2.74), respectively. It was found that CNR of vessels in 40 keV and 50 keV was higher than those of other keV data sets. There was statistical difference for CNR of vessels between monochromatic images and 140 kVp images. Image quality of 50 keV with 60%ASIR was better than other lower monochromatic energy images. Conclusion Monochromatic images of lower energy associated with ASIR reconstruction from spectral CT imaging demonstrated the best vascular contrast for the portal vein (PV) and inferior vena cava (IVC) in the patients with budd-chiari syndrome. 50 keV monochromatic images with 60%ASIR improved the diagnostic ability of CTV (PV and IVC) in budd-chiari syndrome.关键词
能谱成像/自适应统计迭代重建技术/X线计算机体层摄影术/CT门静脉成像/布加综合征Key words
spectral imaging/adaptive statistical iterative reconstruction technique/X-ray computed tomography/CT portal venography/Budd-Chiari syndrome分类
医药卫生引用本文复制引用
吴艳,苏蕾,侯平,蒋耀军,刘杰,高剑波..低能量成像技术在布加综合征肝内门脉系统及下腔静脉系统成像中的临床应用[J].中国医疗设备,2016,31(7):16-18,3.
