Reducing Visceral-Motion-Related Artifacts on the Liver with Dual-Energy CT: A Comparison of Four Different CT Scanner Techniques.
Reducing Visceral-Motion-Related Artifacts on the Liver with Dual-Energy CT: A Comparison of Four Different CT Scanner Techniques.
复制标题
DOI：
10.3390/diagnostics12092155
复制
发表时间：
2022-09-05
期刊：
影响因子：
3.6
通讯作者：
Yeh, Benjamin M.
中科院分区：
文献类型：
--
作者：
Grosu, Sergio;Vijittrakarnrung, Korawan;Wang, Zhen J.;Obmann, Markus M.;Sun, Yuxin;Sugi, Mark D.;Yeh, Benjamin M.
目的：评估不同双能量CT（DECT）扫描仪技术对肝脏内脏运动相关伪影严重程度的影响。研究方法：两名独立的阅片者回顾性评价了在双源、双光束、快速KV切换和双层光谱探测器扫描仪上采集的120 kVp（类）、单能低和高keV、虚拟非造影（VNC）和碘图像上肝脏的内脏运动相关伪影。定量评估：伪影延伸到肝脏的深度，亨氏单位（HU）和碘浓度的测量。定性评估：5分Likert量表（1 =无至5 =重度）。通过Wilcoxon符号秩和配对t检验比较图像重建之间的肿瘤严重程度。结果如下：对458名连续患者（平均年龄：61 ± 14岁，331名男性）的615次腹部对比增强常规临床DECT扫描进行了评价。对于双源和双光束扫描仪，与其他图像重建相比，120 kVp类图像的伪影延伸到肝脏的深度明显更短，伪影严重程度评分明显更低（均p < 0.001）。对于快速KV开关和光谱探测器扫描仪图像，伪影的延伸深度明显较短，碘图像的伪影严重程度评分明显较低（均为p < 0.001）。双源120 kVp-样和光谱探测器碘图像减少了伪影，在一定程度上，伪影之间的HU或碘浓度无显著差异（双源：97 HU，光谱检测器：1.9 mg/mL）和未受影响的肝实质（双源：108 HU，光谱检测器：2.1 mg/mL）是可测量的（双源：p = 0.32，光谱检测器：p = 0.15）。结论：通过查看双源和双光束DECT扫描仪的120 kVp类图像以及快速KV开关和双层光谱探测器DECT扫描仪的碘图像，可以显著减少肝脏上与内脏运动相关的伪影。
Purpose: To assess the influence of different dual-energy CT (DECT) scanner techniques on the severity of visceral-motion-related artifacts on the liver. Methods: Two independent readers retrospectively evaluated visceral-motion-related artifacts on the liver on 120-kVp(-like), monoenergetic low- and high-keV, virtual non-contrast (VNC), and iodine images acquired on a dual-source, twin-beam, fast kV-switching, and dual-layer spectral detector scanner. Quantitative assessment: Depth of artifact extension into the liver, measurements of Hounsfield Units (HU) and iodine concentrations. Qualitative assessment: Five-point Likert scale (1 = none to 5 = severe). Artifact severity between image reconstructions were compared by Wilcoxon signed-rank and paired t-tests. Results: 615 contrast-enhanced routine clinical DECT scans of the abdomen were evaluated in 458 consecutive patients (mean age: 61 ± 14 years, 331 men). For dual-source and twin-beam scanners, depth of extension of artifacts into the liver was significantly shorter and artifact severity scores significantly lower for 120-kVp-like images compared with the other image reconstructions (p < 0.001, each). For fast kV-switching and spectral detector scanner images, depth of extension of artifacts was significantly shorter and artifact severity scores significantly lower for iodine images (p < 0.001, each). Dual-source 120-kVp-like and spectral detector iodine images reduced artifacts to an extent that no significant difference in HU or iodine concentrations between artifacts (dual-source: 97 HU, spectral detector: 1.9 mg/mL) and unaffected liver parenchyma (dual-source: 108 HU, spectral detector: 2.1 mg/mL) was measurable (dual-source: p = 0.32, spectral detector: p = 0.15). Conclusion: Visceral-motion-related artifacts on the liver can be markedly reduced by viewing 120-kVp-like images for dual-source and twin-beam DECT scanners and iodine images for fast kV-switching and dual-layer spectral detector DECT scanners.
登录
查看更多内容
DOI：
10.3390/diagnostics12040782
发表时间：
2022-03-23
期刊：
Diagnostics (Basel, Switzerland)
影响因子：
--
作者：
通讯作者：
--
影响因子：
5.5
作者：
Barrett, JF;Keat, N
通讯作者：
Keat, N
DOI：
10.1177/028418518402500408
发表时间：
1984-01-01
期刊：
ACTA RADIOLOGICA-DIAGNOSIS
影响因子：
--
作者：
PARTANEN, K;KORMANO, M
通讯作者：
KORMANO, M
影响因子：
2.4
作者：
Hokamp, N. Grosse;Hoeink, A. J.;Haneder, S.
通讯作者：
Haneder, S.
影响因子：
5
作者：
Patel, Bhavik N.;Rosenberg, Michael;Marin, Daniele
通讯作者：
Marin, Daniele