Liver virtual non-enhanced CT with dual-source, dual-energy CT: a preliminary study

被引：184

作者：

Zhang, Long-Jiang ^{[1
]}

Peng, Jin ^{[2
]}

Wu, Sheng-Yong ^{[3
]}

Wang, Z. Jane ^{[4
]}

Wu, Xin-Sheng ^{[1
]}

Zhou, Chang-Sheng ^{[1
]}

Ji, Xue-Man ^{[1
]}

Lu, Guang-Ming ^{[1
]}

机构：

[1] Nanjing Univ, Clin Sch Med Coll, Jinling Hosp, Dept Med Imaging, Nanjing 210002, Jiangsu Prov, Peoples R China

[2] Bailu Hosp, Dept Radiol, Xiamen 361003, Fujian Province, Peoples R China

[3] Med Imaging Inst Tianjin, Tianjin 300192, Peoples R China

[4] Univ Calif San Francisco, Dept Radiol & Biomed Imaging, Sect Abdominal Imaging, San Francisco, CA 94143 USA

来源：

EUROPEAN RADIOLOGY | 2010年 / 20卷 / 09期

关键词：

Dual-energy CT; Virtual non-enhanced CT; Liver; Panoramic; 3D; MULTIDETECTOR CT; ARTERIAL PHASE; ANEURYSM; STENOSIS; REPAIR;

D O I：

10.1007/s00330-010-1778-7

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

100231 [临床病理学]; 100902 [航空航天医学];

摘要：

To compare virtual non-enhanced liver CT (VNCT) from dual-energy CT (DECT) with true non-enhanced liver CT (TNCT) in patients. A total of 102 patients underwent multi-phase abdominal CT. Liver arterial VNCT (VNCTA) and portovenous VNCT (VNCTV) images were derived from the arterial and portovenous DECT data. The mean CT number, signal to noise ratio (SNR), image quality, contrast to noise (CNR) of liver lesions, lesion detectability and radiation dose were compared. There was no difference in mean CT numbers of all organs (all P > 0.05). SNR on VNCT images was higher than that of TNCT (all P < 0.001). Image quality of VNCT was diagnostic but lower than that of TNCT (P < 0.001). VNCTA images were superior to VNCTV (P < 0.001). VNCTA and VNCTV detected 78 (91%) and 70 (81%) of 86 hepatic focal lesions visualised on TNCT. There was no difference in the size, attenuation and CNR of focal hepatic lesions (all P > 0.05), but SNR of the lesions on VNCT was higher than that on TNCT (P < 0.001). Radiation dose of biphase DECT was lower than that of routine triphase CT (P < 0.001). VNCTA may potentially replace TNCT as part of a multi-phase liver imaging protocol with consequent saving in radiation dose.

引用

页码：2257 / 2264

页数：8

共 17 条

[1]

Image Fusion in Dual Energy Computed Tomography Effect on Contrast Enhancement, Signal-to-Noise Ratio and Image Quality in Computed Tomography Angiography [J].