双源CT双能量虚拟平扫技术在颈部淋巴结病变中的应用价
值
贾晓霞;江杰;邓亚敏;杨亚英
【期刊名称】《实用放射学杂志》 【年(卷),期】2012(028)005
【摘要】Objective To investigate the clinical applied value of dual-energy virtual non-contrast( VNC) of dual-source CT for the cervical lymph nodes. Methods 48 cases with pathological diagnosis of cervical lymph nodes underwent conventional non-contrast (CNC)and dual-energy enhanced scanning. VNC images were obtained through dual energy post-processing software. Mean CT values, signal to noise ratio(SNR) , image quality, lesion's detectability and radiation dose were comparatively analysed between routine non-contrast and VNC. Results CT attenuations of the cervical lymph nodes between CNC and VNC images were not significantly different(P>0. 05). The image noise of VNC images was significantly lower than that of CNC, while the SNR of VNC images was significantly higher than that of CNC(P<0. 05). The image quality of VNC was lower than that of CNC,however the difference was not statistically significant(P>0. 05). The necrosis of the cervical lymph nodes could be detected by both CNC and VNC , and the difference was not statistically significant between them (P>0. 05 ) . The radiation dose of VNC was lower than that of VNC(P< 0. 05). Conclusion
双源CT双能量虚拟平扫技术在颈部淋巴结病变中的应用价值
