Abstract:Objective This paper aim to explore the application value of energy spectrum CT single
energy imaging combined with low concentration contrast agent in portal vein imaging. Method 70
patients were randomly divided into A, B two groups to receive liver CT enhanced scan. A group using
the gem CT energy spectrum imaging (GSI), 270 mgI/mL iodixanol; B group using conventional CT
enhanced scanning, 350 mgI/mL ioversol. Calculation the portal image noise, contrast to noise ratio
(CNR), signal to noise ratio (SNR), image quality subjective evaluation and the effective radiation dose
(ED) of the two groups, and the corresponding statistical analysis. Results The SNR (7.46±1.00) and
CNR (5.31±1.23) of images in the A group were higher than those of the B group [(5.03±1.000) and
(3.18±1.58)]. The noise (16.58±7.16) of image and average ED (3.27±1.57) mSv were lower than
those of the B group [(23.19±11.71) and (4.06±0.85)], the difference was statistically significant.
The subjective scores of images in the A group were slightly higher than those in the B group, but there
was no statistical difference between the two groups. Conclusion The best single energy spectrum CT
imaging combined with low concentration contrast, using adaptive statistical iterative reconstruction
(ASiR) technology, it can get the same image quality as the conventional enhanced CT,reduce radiation
dose, is worth to be popularized in clinic.
周泽旺,张昌政,郑瑛琪,
李丹丹. 能谱CT单能量成像结合低浓度对比剂在门静脉成像的应用价值[J]. 中国医疗设备, 2017, 32(5): 87-90.
ZHOU Ze-wang,
ZHANG Chang-zheng,
ZHENG Ying-qi, LI Dan-dan. Application Value of Energy Spectrum CT Single Energy Imaging Combined
with Low Concentration Contrast Agent in Portal Vein Imaging. China Medical Devices, 2017, 32(5): 87-90.