Improving image quality in portal venography with spectral CT imaging

2012 ◽  
Vol 81 (8) ◽  
pp. 1677-1681 ◽  
Author(s):  
Li-qin Zhao ◽  
Wen He ◽  
Jian-ying Li ◽  
Jiang-hong Chen ◽  
Ke-yang Wang ◽  
...  
Keyword(s):  
Image Quality ◽  
Ct Imaging ◽  
Spectral Ct ◽  
Portal Venography

scholarly journals Iodine load reduction in dual-energy spectral CT portal venography with low energy images combined with adaptive statistical iterative reconstruction

2019 ◽  
Vol 92 (1100) ◽  
pp. 20180414
Author(s):  
Dong Han ◽  
Xiaoxia Chen ◽  
Yuxin Lei ◽  
Chunling Ma ◽  
Jieli Zhou ◽  
...  
Keyword(s):  
Image Quality ◽  
Portal Vein ◽  
Dual Energy ◽  
Spectral Ct ◽  
Adaptive Statistical Iterative Reconstruction ◽  
Contrast Dose ◽  
Statistical Iterative Reconstruction ◽  
Group A ◽  
Group B ◽  
Portal Venography

Objective: To study the application of using low energy images combined with adaptive statistical iterative reconstruction (ASiR) in dual-energy spectral CT portal venography (CTPV) to reduce iodine load. Methods: 41 patients for CTPV were prospectively and randomly divided into two groups. Group A ( n = 21) used conventional 120 kVp scanning protocol with contrast dose at 0.6 gI/kg while group B ( n = 20) used dual-energy spectral imaging with reduced contrast dose at 0.3 gI/kg. The 120 kVp images in Group A and 50 keV images in Group B were reconstructed with 40% ASiR. The contrast-to-noise ratio of portal vein was calculated. The image quality and the numbers of intrahepatic portal vein branches were evaluated by two experienced radiologists using a 5-point scoring system. Results: Group B reduced iodine load by 52% compared to Group A (17.21 ± 3.30 gI vs 35.80 ± 6.18 gI, p < 0.001). All images in both groups were acceptable for diagnosis. CT values and standard deviations in portal veins of Group B were higher than Group A (all p < 0.05); There were no statistical differences in contrast-to-noise ratio, image quality score and the number of observed portal vein branches between the two groups (all p > 0.05), and the two observers had excellent agreement in image quality assessment (all κ > 0.75). Conclusion: The use of 50 keV images in dual-energy spectral CTPV with ASiR reduces total iodine load by 52% while maintaining good image quality. Advances in knowledge: Spectral CT images combined with ASiR can be used in low contrast dose CTPV portal venography to maintain image quality and reduce contrast dose.

Application of low concentration contrast medium in spectral CT imaging for CT portal venography

2017 ◽  
Vol 25 (1) ◽  
pp. 135-143 ◽  
Author(s):  
Yongxia Zhao ◽  
Yanmin Wu ◽  
Ziwei Zuo ◽  
Hongna Suo ◽  
Sisi Zhao ◽  
...  
Keyword(s):  
Contrast Medium ◽  
Ct Imaging ◽  
Spectral Ct ◽  
Low Concentration ◽  
Portal Venography

scholarly journals Spectral CT Imaging of Laryngeal and Hypopharyngeal Squamous Cell Carcinoma: Evaluation of Image Quality and Status of Lymph Nodes

PLoS ONE ◽  
2013 ◽  
Vol 8 (12) ◽  
pp. e83492 ◽  
Author(s):  
Aiyin Li ◽  
Hui Liang ◽  
Wei Li ◽  
Zhongzhou Wang ◽  
Tao Pang ◽  
...  
Keyword(s):  
Squamous Cell Carcinoma ◽  
Image Quality ◽  
Lymph Nodes ◽  
Cell Carcinoma ◽  
Squamous Cell ◽  
Ct Imaging ◽  
Spectral Ct ◽  
Hypopharyngeal Squamous Cell Carcinoma

Spectral CT Imaging in Patients with Budd-Chiari Syndrome: Investigation of Image Quality

2014 ◽  
Vol 70 (2) ◽  
pp. 1043-1049 ◽  
Author(s):  
Lei Su ◽  
Junqiang Dong ◽  
Qiang Sun ◽  
Jie Liu ◽  
Peijie Lv ◽  
...  
Keyword(s):  
Image Quality ◽  
Ct Imaging ◽  
Spectral Ct ◽  
Budd Chiari Syndrome ◽  
Chiari Syndrome

Improving Image Quality of Pancreatic Cancer and Surrounding Vessels with Spectral CT Imaging

2015 ◽  
Vol 11 (3) ◽  
pp. 185-191
Author(s):  
Qi Miao ◽  
Xiaoling Li ◽  
Ke Ren ◽  
Yu Zhao ◽  
Li Zhao ◽  
...  
Keyword(s):  
Pancreatic Cancer ◽  
Image Quality ◽  
Ct Imaging ◽  
Spectral Ct

Ultralow Dose CT Imaging for Navigated Skull Base Surgery Using ASIR and MBIR-2D and 3D Image Quality

2014 ◽  
Vol 75 (S 02) ◽  
Author(s):  
Gerlig Widmann ◽  
P. Schullian ◽  
R. Hoermann ◽  
E. Gassner ◽  
H. Riechelmann ◽  
...  
Keyword(s):  
Image Quality ◽  
Skull Base ◽  
Skull Base Surgery ◽  
Ct Imaging ◽  
3D Image ◽  
Ultralow Dose ◽  
2D And 3D

Spectral CT Imaging of Lung Cancer

2018 ◽  
Vol 25 (11) ◽  
pp. 1398-1404 ◽  
Author(s):  
Feng Wu ◽  
Hang Zhou ◽  
Feng Li ◽  
Jiang-tao Wang ◽  
Tao Ai
Keyword(s):  
Lung Cancer ◽  
Ct Imaging ◽  
Spectral Ct

X-Ray Multi-Spectral CT Imaging Method Based on Subtraction Fusion

2020 ◽  
Vol 57 (8) ◽  
pp. 083001
Author(s):  
孟红娟 Meng Hongjuan ◽  
陈平 Chen Ping ◽  
潘晋孝 Pan Jinxiao ◽  
李毅红 Li Yihong
Keyword(s):  
Ct Imaging ◽  
Imaging Method ◽  
Spectral Ct ◽  
X Ray
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