Comparative study of image quality and radiation dose in thoracic-abdominal-pelvic CT Enhancement with different tube voltages and reconstruction algorithms

IF 1.7 4区 综合性期刊 Q2 MULTIDISCIPLINARY SCIENCES
Wei Ding, Zi-yan Liu, Ze-peng Ma, Tian-le Zhang, Yong-Xia Zhao
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引用次数: 0

Abstract

Objectives

To evaluate the image quality and radiation dose in thoracic-abdominal-pelvic computed tomography enhancement using ATVM (Automatic Tube Voltage Modulation)coupled with AIIR versus routine tube voltage combined with Karl-3D IR. The optimal noise level for the AIIR in thoracic-abdominal-pelvic CT enhancement was also determined.

Methods

Group A was scanned using ATVM, and images were reconstructed using AIIR with 1–5 noise levels. Group B was scanned and reconstructed using the fixed tube voltage (120 kVp) combined with Karl 3D level 5 IR. The image quality of the reconstructed images of AIIR with 1–5 noise levels were compared and the best image reconstruction noise level for AIIR was preferred. Image quality and radiation dose were statistically analyzed for group A (best image reconstruction noise level for AIIR) and group B.

Results

AIIR level 3 is the optimal noise level for CT-enhanced image reconstruction of the thorax, abdomen, and pelvis. The mean SNR, CNR, and subjective evaluation of AIIR level 3 Group A images were better than those of Karl 3D level 5 Group B images (p < 0.05). The mean SSDE and the mean ED of the AIIR Group A patients were reduced by 46% and 41%, respectively, compared with those of Group B.

Conclusions

ATVM technology combined with the AIIR algorithm improved image quality and reduced patient radiation dose in thoracic-abdominal-pelvic CT scans. The optimal noise level for the reconstruction of high-quality arterial and venous-phase images was AIIR level 3.

不同管电压和重建算法下胸腹盆腔 CT 增强成像质量和辐射剂量的比较研究
目的 评估使用 ATVM(自动管电压调制)结合 AIIR 与使用常规管电压结合 Karl-3D IR 进行胸腹盆腔计算机断层扫描增强的图像质量和辐射剂量。此外,还确定了 AIIR 在胸腹盆腔 CT 增强中的最佳噪音水平。方法 A 组使用 ATVM 扫描,并使用 1-5 级噪音水平的 AIIR 重建图像。B 组使用固定管电压(120 kVp)结合卡尔三维 5 级红外进行扫描和重建。比较了 1-5 级噪声水平的 AIIR 重建图像的质量,并优选出 AIIR 的最佳图像重建噪声水平。结果AIIR 3 级是胸部、腹部和盆腔 CT 增强图像重建的最佳噪声级。A 组 AIIR 3 级图像的平均 SNR、CNR 和主观评价均优于 B 组 Karl 3D 5 级图像(P < 0.05)。与 B 组相比,AIIR A 组患者的平均 SSDE 和平均 ED 分别降低了 46% 和 41%。重建高质量动脉和静脉相图像的最佳噪音水平是 AIIR 3 级。
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来源期刊
自引率
5.90%
发文量
130
审稿时长
16 weeks
期刊介绍: Journal of Radiation Research and Applied Sciences provides a high quality medium for the publication of substantial, original and scientific and technological papers on the development and applications of nuclear, radiation and isotopes in biology, medicine, drugs, biochemistry, microbiology, agriculture, entomology, food technology, chemistry, physics, solid states, engineering, environmental and applied sciences.
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