The optimal monochromatic spectral computed tomographic imaging plus adaptive statistical iterative reconstruction algorithm can improve the superior mesenteric vessel image quality
| Autor: | Xiao-Ping Yin, Guang-Lu Liang, Zi-Wei Zuo, Huai-Jun Liu, Ying-Jin Xu, Jia-Ning Wang, Bu-Lang Gao |
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| Rok vydání: | 2016 |
| Předmět: |
Male
medicine.medical_specialty Image quality Physics::Medical Physics Contrast Media Injection rate Iterative reconstruction Signal-To-Noise Ratio 030218 nuclear medicine & medical imaging Computed tomographic 03 medical and health sciences 0302 clinical medicine Mesenteric Artery Superior medicine.artery Image Processing Computer-Assisted Medicine Humans Radiology Nuclear Medicine and imaging Superior mesenteric artery Superior mesenteric vein Aged medicine.diagnostic_test business.industry General Medicine Middle Aged Radiographic Image Enhancement 030220 oncology & carcinogenesis Angiography Radiographic Image Interpretation Computer-Assisted Female Monochromatic color Radiology business Nuclear medicine Tomography X-Ray Computed Algorithms |
| Zdroj: | European journal of radiology. 89 |
| ISSN: | 1872-7727 |
| Popis: | To investigate the effect of the optimal monochromatic spectral computed tomography (CT) plus adaptive statistical iterative reconstruction on the improvement of the image quality of the superior mesenteric artery and vein.The gemstone spectral CT angiographic data of 25 patients were reconstructed in the following three groups: 70KeV, the optimal monochromatic imaging, and the optimal monochromatic plus 40%iterative reconstruction mode. The CT value, image noises (IN), background CT value and noises, contrast-to-noise ratio (CNR), signal-to-noise ratio (SNR) and image scores of the vessels and surrounding tissues were analyzed.In the 70KeV, the optimal monochromatic and the optimal monochromatic images plus 40% iterative reconstruction group, the mean scores of image quality were 3.86, 4.24 and 4.25 for the superior mesenteric artery and 3.46, 3.78 and 3.81 for the superior mesenteric vein, respectively. The image quality scores for the optimal monochromatic and the optimal monochromatic plus 40% iterative reconstruction groups were significantly greater than for the 70KeV group (P0.05). The vascular CT value, image noise, background noise, CNR and SNR were significantly (P0.001) greater in the optimal monochromatic and the optimal monochromatic images plus 40% iterative reconstruction group than in the 70KeV group. The optimal monochromatic plus 40% iterative reconstruction group had significantly (P0.05) lower image and background noise but higher CNR and SNR than the other two groups.The optimal monochromatic imaging combined with 40% iterative reconstruction using low-contrast agent dosage and low injection rate can significantly improve the image quality of the superior mesenteric artery and vein. |
| Databáze: | OpenAIRE |
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