The diagnostic value of dual energy virtual non-contrast images of dual-source CT in the diagnosis of com-mon benign liver diseases
10.3969/j.issn.1006-5725.2017.09.018
- VernacularTitle:双源CT双能量虚拟平扫对肝脏常见良性病变的诊断价值
- Author:
Pan LIU
;
Feng WANG
;
Bangguo LI
;
Xianli LUO
;
Meng WANG
;
Rongpin WANG
- Keywords:
Dual-source CT;
Dual-energy;
Virtual non-contrast;
Liver;
Radiation dose
- From:
The Journal of Practical Medicine
2017;33(9):1435-1438
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the diagnostic value and limitations of dual-energy virtual non-con-trast images of dual-source CT in common benign liver diseases. Methods Dual-source CT was performed on 226 upper abdomen pathogenesis patients. The conventional non-contrast (CNC) scan was performed with single-energy mode, the arterial phase and portal phase scans were performed with dual-energy mode. The virtual non-contrast (VNC) images were derived from the portal data using liver virtual non-contrast software. 117 patients with common benign liver diseases were retrospectively analyzed in CNC and VNC. The lesion detectability, effective radiation doses for single-energy mode and dual-energy mode were compared. Results Among 117 patients, there were 28 (73.6%) hemangiomas, 58 (85.3%) calcifications or stones in VNC, but the hemangiomas, calcifications or stones in CNC were 37 (97.3%) and 68 (100%), respectively. The hemangiomas, calcifications or stones in VNC and CNC were significantly different (P < 0.05). The detection of cyst and hepatic steatosis on VNC images were similar as CNC(P > 0.05). The CTDIvol, DLP and ED of dual-energy mode were obviously lower than those of single-energy mode (P < 0.05). Conclusion The detection of hemangiomas, calcifications or stones on VNC images is lower than CNC images. There is no difference in detecting cyst and hepatic steatosis. In addition, radiation dose will be reduced due to adopting VNC.VNC has potential clinical application value.
