基于双能 CT 的软件辅助选择虚拟单能量水平对急性坏死性胰腺炎最佳图像质量的可行性：一项初步研究。
Feasibility of using software-aided selection of virtual monoenergetic level for optimal image quality of acute necrotising pancreatitis based on dual-energy computed tomography: a preliminary study.
机构信息
Department of Radiology, West China Hospital, Sichuan University, No. 37 Guoxue Lane, Chengdu, 610041, Sichuan, P.R. China.
CT collaboration, Siemens-healthineers, Chengdu, 610041, Sichuan, P.R. China.
出版信息
BMC Med Imaging. 2023 Jul 18;23(1):95. doi: 10.1186/s12880-023-01032-3.
OBJECTIVE
This study aimed to assess the feasibility of software-aided selection of monoenergetic level for acute necrotising pancreatitis (ANP) depiction compared to other automatic image series generated using dual-energy computed tomography (CT).
METHODS
The contrast-enhanced dual-source dual-energy CT images in the portal venous phase of 48 patients with ANP were retrospectively analysed. Contrast-to-noise ratio (CNR) of pancreatic parenchyma-to-necrosis, signal-to-noise ratio (SNR) of the pancreas, image noise, and score of subjective diagnosis were measured, calculated, and compared among the CT images of 100 kV, Sn140 kV, weighted-average 120 kV, and optimal single-energy level for CNR.
RESULTS
CNR of pancreatic parenchyma-to-necrosis in the images of 100 kV, Sn140 kV, weighted-average 120 kV, and the optimal single-energy level for CNR was 5.18 ± 2.39, 3.13 ± 1.35, 5.69 ± 2.35, and 9.99 ± 5.86, respectively; SNR of the pancreas in each group was 6.31 ± 2.77, 4.27 ± 1.56, 7.21 ± 2.69, and 11.83 ± 6.30, respectively; image noise in each group was 18.78 ± 5.20, 17.79 ± 4.63, 13.28 ± 3.13, and 9.31 ± 2.96, respectively; and score of subjective diagnosis in each group was 3.56 ± 0.50, 3.00 ± 0.55, 3.48 ± 0.55, and 3.88 ± 0.33, respectively. The four measurements of the optimal single-energy level for CNR images were significantly different from those of images in the other three groups (P < 0.05). CNR of pancreatic parenchyma-to-necrosis, SNR of the pancreas, and score of subjective diagnosis in the images of the optimal single-energy level for CNR were significantly higher, while the image noise was lower than those in the other three groups (all P = 0.000).
CONCLUSION
Optimal single-energy level imaging for CNR of dual-source CT could improve quality of CT images in patients with ANP, enhancing the display of necrosis in the pancreas.
目的
本研究旨在评估软件辅助选择单能量水平在急性坏死性胰腺炎（ANP）描绘中的可行性，与使用双能 CT 生成的其他自动图像系列进行比较。
方法
回顾性分析 48 例 ANP 患者的门静脉期双源双能 CT 增强图像。测量并比较了 100kV、Sn140kV、加权平均 120kV 和最佳单能量水平的胰腺实质与坏死的对比噪声比（CNR）、胰腺的信噪比（SNR）、图像噪声和主观诊断评分。
结果
100kV、Sn140kV、加权平均 120kV 和最佳单能量水平的 CNR 图像的胰腺实质与坏死的 CNR 分别为 5.18±2.39、3.13±1.35、5.69±2.35 和 9.99±5.86，SNR 分别为 6.31±2.77、4.27±1.56、7.21±2.69 和 11.83±6.30，图像噪声分别为 18.78±5.20、17.79±4.63、13.28±3.13 和 9.31±2.96，主观诊断评分分别为 3.56±0.50、3.00±0.55、3.48±0.55 和 3.88±0.33。最佳单能量水平 CNR 图像的这四个测量值与其他三组的测量值有显著差异（P<0.05）。最佳单能量水平 CNR 图像的胰腺实质与坏死的 CNR、胰腺 SNR 和主观诊断评分显著更高，而图像噪声则低于其他三组（均 P=0.000）。
结论
双源 CT 的最佳单能量水平成像可以改善 ANP 患者 CT 图像的质量，增强胰腺坏死的显示。
Zotero 插件