Jinghong Liu, Presenter: Nothing to Disclose

Ailian Liu MD, Abstract Co-Author: Nothing to Disclose

Shifeng Tian, Abstract Co-Author: Nothing to Disclose

He Qing Wang MSc, Abstract Co-Author: Nothing to Disclose

Haitao Wang, Abstract Co-Author: Nothing to Disclose

Zibin Tong, Abstract Co-Author: Nothing to Disclose

Chen Anliang, Abstract Co-Author: Nothing to Disclose

Chen Lihua, Abstract Co-Author: Nothing to Disclose

To qualitatively and quantitatively evaluate the feasibility of CT virtual non-contrast (VNC) spectral imaging in renal masses.

Sixty-two patients with histopologically proven renal masses underwent gemstone spectral imaging (GSI) including noncontrast(TNC), arterial, cortex and medullary phase acquisitions. The triphasic GSI dataset was sent to workstation and 3 sets of VNC images (including VNCa, VNCc, VNCm) were obtained by subtract iodine from iodine-water images in the triphasic enhanced GSI images, respectively. The quality of VNCs and TNC images was evaluated on a five-point scale. Interobserver agreement with regard to image quality was assessed using Cohen’s kappa, and four groups of image quality was compared with ANOVA analysis. The contrast-to-noise ratio (CNR) of mass-to-kidney in the TNE and VNCs images was calculated, and difference between these four datasets was compared with ANOVA analysis. Using appearance of masses on triphasic images as a standard, the masses detection ratio of four groups was calculated and compared with chi-square test.

Interobserver agreement with regard to image quality was excellent (k>0.600). There was no significant difference among the image quality of TNC, VNCa and VNCv. The image quality of VNCe was significant worse than that of other three groups. VNCa significant higher than that of TNC( P<0.05). No statistically significant difference was observed among VNCv, VNCe and TNC(P>0.05); there was no statistically significant difference was observed among TNC、VNCa 、VNCv and VNCe.

VNC images obtain from arterial phase may be a surrogate for conventional noncontrast scan in renal masses diagnosis.

VNC images obtain from arterial phase may be a surrogate for conventional noncontrast scan in renal masses diagnosis

Liu, J, Liu, A, Tian, S, Wang, H, Wang, H, Tong, Z, Anliang, C, Lihua, C, Virtual Non-contrast Spectral Imaging for Evaluation of Renal Masses-A Preliminary Study.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14005490.html